./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit
--------------------------------------------------------------------------------
Checking for memory safety (deref-memtrack)
Using default analysis
Version b8dbc81d
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER
--- Real Ultimate output ---
This is Ultimate 0.2.3-?-b8dbc81
[2023-08-30 07:55:43,105 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2023-08-30 07:55:43,108 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2023-08-30 07:55:43,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2023-08-30 07:55:43,144 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2023-08-30 07:55:43,145 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2023-08-30 07:55:43,147 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2023-08-30 07:55:43,150 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2023-08-30 07:55:43,153 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2023-08-30 07:55:43,155 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2023-08-30 07:55:43,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2023-08-30 07:55:43,159 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2023-08-30 07:55:43,161 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2023-08-30 07:55:43,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2023-08-30 07:55:43,166 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2023-08-30 07:55:43,168 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2023-08-30 07:55:43,169 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2023-08-30 07:55:43,173 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2023-08-30 07:55:43,175 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2023-08-30 07:55:43,179 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2023-08-30 07:55:43,182 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2023-08-30 07:55:43,185 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2023-08-30 07:55:43,186 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2023-08-30 07:55:43,186 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2023-08-30 07:55:43,189 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2023-08-30 07:55:43,195 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2023-08-30 07:55:43,196 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2023-08-30 07:55:43,197 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2023-08-30 07:55:43,198 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2023-08-30 07:55:43,199 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2023-08-30 07:55:43,202 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2023-08-30 07:55:43,203 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2023-08-30 07:55:43,204 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2023-08-30 07:55:43,205 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2023-08-30 07:55:43,206 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2023-08-30 07:55:43,207 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2023-08-30 07:55:43,208 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2023-08-30 07:55:43,208 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2023-08-30 07:55:43,208 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2023-08-30 07:55:43,209 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2023-08-30 07:55:43,210 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2023-08-30 07:55:43,211 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf
[2023-08-30 07:55:43,245 INFO L113 SettingsManager]: Loading preferences was successful
[2023-08-30 07:55:43,245 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2023-08-30 07:55:43,246 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-08-30 07:55:43,246 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-08-30 07:55:43,247 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-08-30 07:55:43,247 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-08-30 07:55:43,248 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-08-30 07:55:43,248 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2023-08-30 07:55:43,248 INFO L138 SettingsManager]: * Use SBE=true
[2023-08-30 07:55:43,249 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-08-30 07:55:43,250 INFO L138 SettingsManager]: * sizeof long=4
[2023-08-30 07:55:43,250 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false
[2023-08-30 07:55:43,250 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2023-08-30 07:55:43,250 INFO L138 SettingsManager]: * sizeof POINTER=4
[2023-08-30 07:55:43,250 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2023-08-30 07:55:43,250 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true
[2023-08-30 07:55:43,251 INFO L138 SettingsManager]: * Bitprecise bitfields=true
[2023-08-30 07:55:43,251 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true
[2023-08-30 07:55:43,251 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-08-30 07:55:43,251 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2023-08-30 07:55:43,251 INFO L138 SettingsManager]: * sizeof long double=12
[2023-08-30 07:55:43,252 INFO L138 SettingsManager]: * Use constant arrays=true
[2023-08-30 07:55:43,252 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-08-30 07:55:43,252 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2023-08-30 07:55:43,252 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2023-08-30 07:55:43,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-08-30 07:55:43,253 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-08-30 07:55:43,253 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2023-08-30 07:55:43,253 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL
[2023-08-30 07:55:43,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2023-08-30 07:55:43,253 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2023-08-30 07:55:43,254 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2023-08-30 07:55:43,254 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2023-08-30 07:55:43,254 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-08-30 07:55:43,254 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER
[2023-08-30 07:55:43,541 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2023-08-30 07:55:43,563 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-08-30 07:55:43,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-08-30 07:55:43,566 INFO L271 PluginConnector]: Initializing CDTParser...
[2023-08-30 07:55:43,568 INFO L275 PluginConnector]: CDTParser initialized
[2023-08-30 07:55:43,569 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i
[2023-08-30 07:55:44,833 INFO L500 CDTParser]: Created temporary CDT project at NULL
[2023-08-30 07:55:45,188 INFO L351 CDTParser]: Found 1 translation units.
[2023-08-30 07:55:45,188 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i
[2023-08-30 07:55:45,199 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de52c4842/25c61f871265425fac97dc98aa146b91/FLAGb4f633d80
[2023-08-30 07:55:45,215 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de52c4842/25c61f871265425fac97dc98aa146b91
[2023-08-30 07:55:45,217 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-08-30 07:55:45,221 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2023-08-30 07:55:45,223 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-08-30 07:55:45,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-08-30 07:55:45,228 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2023-08-30 07:55:45,229 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:55:45" (1/1) ...
[2023-08-30 07:55:45,230 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f0fa521 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:55:45, skipping insertion in model container
[2023-08-30 07:55:45,232 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:55:45" (1/1) ...
[2023-08-30 07:55:45,239 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2023-08-30 07:55:45,296 INFO L178 MainTranslator]: Built tables and reachable declarations
[2023-08-30 07:55:45,712 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i[39758,39771]
[2023-08-30 07:55:45,717 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-08-30 07:55:45,740 INFO L203 MainTranslator]: Completed pre-run
[2023-08-30 07:55:45,800 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i[39758,39771]
[2023-08-30 07:55:45,802 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-08-30 07:55:45,881 INFO L208 MainTranslator]: Completed translation
[2023-08-30 07:55:45,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:55:45 WrapperNode
[2023-08-30 07:55:45,882 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-08-30 07:55:45,883 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-08-30 07:55:45,883 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-08-30 07:55:45,883 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2023-08-30 07:55:45,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:55:45" (1/1) ...
[2023-08-30 07:55:45,935 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:55:45" (1/1) ...
[2023-08-30 07:55:45,966 INFO L138 Inliner]: procedures = 243, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 81
[2023-08-30 07:55:45,966 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-08-30 07:55:45,967 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-08-30 07:55:45,967 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2023-08-30 07:55:45,967 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2023-08-30 07:55:45,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:55:45" (1/1) ...
[2023-08-30 07:55:45,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:55:45" (1/1) ...
[2023-08-30 07:55:45,990 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:55:45" (1/1) ...
[2023-08-30 07:55:45,992 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:55:45" (1/1) ...
[2023-08-30 07:55:45,996 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:55:45" (1/1) ...
[2023-08-30 07:55:46,007 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:55:45" (1/1) ...
[2023-08-30 07:55:46,012 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:55:45" (1/1) ...
[2023-08-30 07:55:46,021 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:55:45" (1/1) ...
[2023-08-30 07:55:46,024 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-08-30 07:55:46,025 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-08-30 07:55:46,025 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2023-08-30 07:55:46,025 INFO L275 PluginConnector]: RCFGBuilder initialized
[2023-08-30 07:55:46,026 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:55:45" (1/1) ...
[2023-08-30 07:55:46,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-08-30 07:55:46,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-08-30 07:55:46,061 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-08-30 07:55:46,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-08-30 07:55:46,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2023-08-30 07:55:46,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-08-30 07:55:46,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$
[2023-08-30 07:55:46,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~int
[2023-08-30 07:55:46,119 INFO L130 BoogieDeclarations]: Found specification of procedure thread1
[2023-08-30 07:55:46,119 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1
[2023-08-30 07:55:46,119 INFO L130 BoogieDeclarations]: Found specification of procedure thread2
[2023-08-30 07:55:46,120 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2
[2023-08-30 07:55:46,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~int
[2023-08-30 07:55:46,120 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock
[2023-08-30 07:55:46,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-08-30 07:55:46,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int
[2023-08-30 07:55:46,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-08-30 07:55:46,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-08-30 07:55:46,122 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement
[2023-08-30 07:55:46,316 INFO L236 CfgBuilder]: Building ICFG
[2023-08-30 07:55:46,319 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation
[2023-08-30 07:55:46,588 INFO L277 CfgBuilder]: Performing block encoding
[2023-08-30 07:55:46,601 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-08-30 07:55:46,603 INFO L302 CfgBuilder]: Removed 4 assume(true) statements.
[2023-08-30 07:55:46,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:55:46 BoogieIcfgContainer
[2023-08-30 07:55:46,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-08-30 07:55:46,608 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-08-30 07:55:46,609 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2023-08-30 07:55:46,612 INFO L275 PluginConnector]: TraceAbstraction initialized
[2023-08-30 07:55:46,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 07:55:45" (1/3) ...
[2023-08-30 07:55:46,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44242d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:55:46, skipping insertion in model container
[2023-08-30 07:55:46,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:55:45" (2/3) ...
[2023-08-30 07:55:46,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44242d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:55:46, skipping insertion in model container
[2023-08-30 07:55:46,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:55:46" (3/3) ...
[2023-08-30 07:55:46,614 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_bad.i
[2023-08-30 07:55:46,629 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-08-30 07:55:46,629 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations.
[2023-08-30 07:55:46,629 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2023-08-30 07:55:46,747 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions.
[2023-08-30 07:55:46,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 143 transitions, 302 flow
[2023-08-30 07:55:46,906 INFO L130 PetriNetUnfolder]: 10/141 cut-off events.
[2023-08-30 07:55:46,907 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES.
[2023-08-30 07:55:46,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 141 events. 10/141 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 180 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 87. Up to 3 conditions per place.
[2023-08-30 07:55:46,919 INFO L82 GeneralOperation]: Start removeDead. Operand has 140 places, 143 transitions, 302 flow
[2023-08-30 07:55:46,925 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 137 transitions, 286 flow
[2023-08-30 07:55:46,931 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation.
[2023-08-30 07:55:46,945 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 134 places, 137 transitions, 286 flow
[2023-08-30 07:55:46,952 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 134 places, 137 transitions, 286 flow
[2023-08-30 07:55:46,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 137 transitions, 286 flow
[2023-08-30 07:55:46,999 INFO L130 PetriNetUnfolder]: 10/137 cut-off events.
[2023-08-30 07:55:46,999 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES.
[2023-08-30 07:55:47,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 137 events. 10/137 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 179 event pairs, 0 based on Foata normal form. 0/118 useless extension candidates. Maximal degree in co-relation 87. Up to 3 conditions per place.
[2023-08-30 07:55:47,003 INFO L119 LiptonReduction]: Number of co-enabled transitions 2314
[2023-08-30 07:55:53,391 INFO L134 LiptonReduction]: Checked pairs total: 5425
[2023-08-30 07:55:53,392 INFO L136 LiptonReduction]: Total number of compositions: 130
[2023-08-30 07:55:53,404 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-08-30 07:55:53,409 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@665ffdfe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-08-30 07:55:53,410 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations.
[2023-08-30 07:55:53,411 INFO L130 PetriNetUnfolder]: 0/1 cut-off events.
[2023-08-30 07:55:53,412 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES.
[2023-08-30 07:55:53,412 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 07:55:53,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1]
[2023-08-30 07:55:53,413 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] ===
[2023-08-30 07:55:53,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 07:55:53,417 INFO L85 PathProgramCache]: Analyzing trace with hash 544, now seen corresponding path program 1 times
[2023-08-30 07:55:53,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-30 07:55:53,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467623317]
[2023-08-30 07:55:53,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 07:55:53,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-30 07:55:53,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 07:55:53,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 07:55:53,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-30 07:55:53,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467623317]
[2023-08-30 07:55:53,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467623317] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 07:55:53,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 07:55:53,524 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0
[2023-08-30 07:55:53,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443783066]
[2023-08-30 07:55:53,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 07:55:53,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-08-30 07:55:53,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-30 07:55:53,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-08-30 07:55:53,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-08-30 07:55:53,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 273
[2023-08-30 07:55:53,563 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 92 flow. Second operand has 2 states, 2 states have (on average 133.5) internal successors, (267), 2 states have internal predecessors, (267), 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)
[2023-08-30 07:55:53,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 07:55:53,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 273
[2023-08-30 07:55:53,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 07:55:53,689 INFO L130 PetriNetUnfolder]: 264/513 cut-off events.
[2023-08-30 07:55:53,689 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES.
[2023-08-30 07:55:53,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 943 conditions, 513 events. 264/513 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2440 event pairs, 168 based on Foata normal form. 24/383 useless extension candidates. Maximal degree in co-relation 833. Up to 409 conditions per place.
[2023-08-30 07:55:53,694 INFO L137 encePairwiseOnDemand]: 270/273 looper letters, 28 selfloop transitions, 0 changer transitions 0/37 dead transitions.
[2023-08-30 07:55:53,694 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 37 transitions, 142 flow
[2023-08-30 07:55:53,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2023-08-30 07:55:53,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states.
[2023-08-30 07:55:53,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 297 transitions.
[2023-08-30 07:55:53,711 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5439560439560439
[2023-08-30 07:55:53,712 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 297 transitions.
[2023-08-30 07:55:53,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 297 transitions.
[2023-08-30 07:55:53,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 07:55:53,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 297 transitions.
[2023-08-30 07:55:53,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 148.5) internal successors, (297), 2 states have internal predecessors, (297), 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)
[2023-08-30 07:55:53,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 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)
[2023-08-30 07:55:53,727 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 273.0) internal successors, (819), 3 states have internal predecessors, (819), 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)
[2023-08-30 07:55:53,729 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 92 flow. Second operand 2 states and 297 transitions.
[2023-08-30 07:55:53,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 37 transitions, 142 flow
[2023-08-30 07:55:53,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 37 transitions, 134 flow, removed 0 selfloop flow, removed 4 redundant places.
[2023-08-30 07:55:53,733 INFO L231 Difference]: Finished difference. Result has 37 places, 37 transitions, 78 flow
[2023-08-30 07:55:53,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=78, PETRI_PLACES=37, PETRI_TRANSITIONS=37}
[2023-08-30 07:55:53,738 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -5 predicate places.
[2023-08-30 07:55:53,738 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 37 transitions, 78 flow
[2023-08-30 07:55:53,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 133.5) internal successors, (267), 2 states have internal predecessors, (267), 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)
[2023-08-30 07:55:53,739 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 07:55:53,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1]
[2023-08-30 07:55:53,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2023-08-30 07:55:53,740 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] ===
[2023-08-30 07:55:53,741 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 07:55:53,742 INFO L85 PathProgramCache]: Analyzing trace with hash 533161, now seen corresponding path program 1 times
[2023-08-30 07:55:53,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-30 07:55:53,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090051944]
[2023-08-30 07:55:53,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 07:55:53,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-30 07:55:53,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 07:55:53,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 07:55:53,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-30 07:55:53,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090051944]
[2023-08-30 07:55:53,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090051944] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 07:55:53,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 07:55:53,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-08-30 07:55:53,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137553920]
[2023-08-30 07:55:53,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 07:55:53,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-08-30 07:55:53,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-30 07:55:53,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-08-30 07:55:53,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-08-30 07:55:54,040 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 273
[2023-08-30 07:55:54,041 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 37 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 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)
[2023-08-30 07:55:54,041 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 07:55:54,041 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 273
[2023-08-30 07:55:54,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 07:55:54,116 INFO L130 PetriNetUnfolder]: 252/486 cut-off events.
[2023-08-30 07:55:54,116 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES.
[2023-08-30 07:55:54,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 881 conditions, 486 events. 252/486 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2277 event pairs, 160 based on Foata normal form. 0/346 useless extension candidates. Maximal degree in co-relation 878. Up to 385 conditions per place.
[2023-08-30 07:55:54,120 INFO L137 encePairwiseOnDemand]: 269/273 looper letters, 24 selfloop transitions, 2 changer transitions 0/35 dead transitions.
[2023-08-30 07:55:54,120 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 35 transitions, 126 flow
[2023-08-30 07:55:54,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-30 07:55:54,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-30 07:55:54,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 400 transitions.
[2023-08-30 07:55:54,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4884004884004884
[2023-08-30 07:55:54,122 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 400 transitions.
[2023-08-30 07:55:54,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 400 transitions.
[2023-08-30 07:55:54,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 07:55:54,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 400 transitions.
[2023-08-30 07:55:54,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 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)
[2023-08-30 07:55:54,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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)
[2023-08-30 07:55:54,126 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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)
[2023-08-30 07:55:54,127 INFO L175 Difference]: Start difference. First operand has 37 places, 37 transitions, 78 flow. Second operand 3 states and 400 transitions.
[2023-08-30 07:55:54,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 35 transitions, 126 flow
[2023-08-30 07:55:54,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 35 transitions, 126 flow, removed 0 selfloop flow, removed 0 redundant places.
[2023-08-30 07:55:54,128 INFO L231 Difference]: Finished difference. Result has 37 places, 35 transitions, 78 flow
[2023-08-30 07:55:54,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=37, PETRI_TRANSITIONS=35}
[2023-08-30 07:55:54,129 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -5 predicate places.
[2023-08-30 07:55:54,129 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 35 transitions, 78 flow
[2023-08-30 07:55:54,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 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)
[2023-08-30 07:55:54,130 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 07:55:54,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1]
[2023-08-30 07:55:54,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2023-08-30 07:55:54,131 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] ===
[2023-08-30 07:55:54,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 07:55:54,131 INFO L85 PathProgramCache]: Analyzing trace with hash 533162, now seen corresponding path program 1 times
[2023-08-30 07:55:54,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-30 07:55:54,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790423911]
[2023-08-30 07:55:54,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 07:55:54,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-30 07:55:54,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 07:55:54,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 07:55:54,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-30 07:55:54,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790423911]
[2023-08-30 07:55:54,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790423911] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 07:55:54,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 07:55:54,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-08-30 07:55:54,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487466833]
[2023-08-30 07:55:54,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 07:55:54,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-08-30 07:55:54,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-30 07:55:54,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-08-30 07:55:54,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-08-30 07:55:54,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 273
[2023-08-30 07:55:54,282 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 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)
[2023-08-30 07:55:54,283 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 07:55:54,283 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 273
[2023-08-30 07:55:54,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 07:55:54,342 INFO L130 PetriNetUnfolder]: 240/459 cut-off events.
[2023-08-30 07:55:54,342 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES.
[2023-08-30 07:55:54,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 835 conditions, 459 events. 240/459 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2102 event pairs, 152 based on Foata normal form. 0/334 useless extension candidates. Maximal degree in co-relation 831. Up to 363 conditions per place.
[2023-08-30 07:55:54,345 INFO L137 encePairwiseOnDemand]: 269/273 looper letters, 22 selfloop transitions, 2 changer transitions 0/33 dead transitions.
[2023-08-30 07:55:54,345 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 33 transitions, 122 flow
[2023-08-30 07:55:54,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-30 07:55:54,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-30 07:55:54,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 410 transitions.
[2023-08-30 07:55:54,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5006105006105006
[2023-08-30 07:55:54,347 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 410 transitions.
[2023-08-30 07:55:54,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 410 transitions.
[2023-08-30 07:55:54,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 07:55:54,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 410 transitions.
[2023-08-30 07:55:54,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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)
[2023-08-30 07:55:54,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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)
[2023-08-30 07:55:54,351 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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)
[2023-08-30 07:55:54,352 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 78 flow. Second operand 3 states and 410 transitions.
[2023-08-30 07:55:54,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 33 transitions, 122 flow
[2023-08-30 07:55:54,352 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-08-30 07:55:54,353 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 74 flow
[2023-08-30 07:55:54,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=33}
[2023-08-30 07:55:54,354 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -7 predicate places.
[2023-08-30 07:55:54,354 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 74 flow
[2023-08-30 07:55:54,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 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)
[2023-08-30 07:55:54,355 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 07:55:54,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1]
[2023-08-30 07:55:54,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2023-08-30 07:55:54,355 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] ===
[2023-08-30 07:55:54,356 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 07:55:54,356 INFO L85 PathProgramCache]: Analyzing trace with hash 512378966, now seen corresponding path program 1 times
[2023-08-30 07:55:54,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-30 07:55:54,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767969968]
[2023-08-30 07:55:54,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 07:55:54,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-30 07:55:54,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 07:55:54,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 07:55:54,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-30 07:55:54,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767969968]
[2023-08-30 07:55:54,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767969968] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 07:55:54,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 07:55:54,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-08-30 07:55:54,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939306282]
[2023-08-30 07:55:54,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 07:55:54,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-08-30 07:55:54,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-30 07:55:54,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-08-30 07:55:54,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-08-30 07:55:54,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 273
[2023-08-30 07:55:54,540 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 74 flow. Second operand has 4 states, 4 states have (on average 127.25) internal successors, (509), 4 states have internal predecessors, (509), 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)
[2023-08-30 07:55:54,540 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 07:55:54,540 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 273
[2023-08-30 07:55:54,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 07:55:54,590 INFO L130 PetriNetUnfolder]: 180/354 cut-off events.
[2023-08-30 07:55:54,590 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES.
[2023-08-30 07:55:54,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 645 conditions, 354 events. 180/354 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1531 event pairs, 112 based on Foata normal form. 0/270 useless extension candidates. Maximal degree in co-relation 641. Up to 278 conditions per place.
[2023-08-30 07:55:54,592 INFO L137 encePairwiseOnDemand]: 270/273 looper letters, 21 selfloop transitions, 2 changer transitions 0/32 dead transitions.
[2023-08-30 07:55:54,592 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 32 transitions, 118 flow
[2023-08-30 07:55:54,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-30 07:55:54,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-30 07:55:54,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 402 transitions.
[2023-08-30 07:55:54,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4908424908424908
[2023-08-30 07:55:54,595 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 402 transitions.
[2023-08-30 07:55:54,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 402 transitions.
[2023-08-30 07:55:54,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 07:55:54,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 402 transitions.
[2023-08-30 07:55:54,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 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)
[2023-08-30 07:55:54,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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)
[2023-08-30 07:55:54,599 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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)
[2023-08-30 07:55:54,599 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 74 flow. Second operand 3 states and 402 transitions.
[2023-08-30 07:55:54,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 32 transitions, 118 flow
[2023-08-30 07:55:54,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-08-30 07:55:54,600 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 72 flow
[2023-08-30 07:55:54,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=34, PETRI_TRANSITIONS=32}
[2023-08-30 07:55:54,601 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -8 predicate places.
[2023-08-30 07:55:54,601 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 72 flow
[2023-08-30 07:55:54,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 127.25) internal successors, (509), 4 states have internal predecessors, (509), 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)
[2023-08-30 07:55:54,602 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 07:55:54,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1]
[2023-08-30 07:55:54,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2023-08-30 07:55:54,602 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] ===
[2023-08-30 07:55:54,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 07:55:54,603 INFO L85 PathProgramCache]: Analyzing trace with hash 512378967, now seen corresponding path program 1 times
[2023-08-30 07:55:54,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-30 07:55:54,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017117555]
[2023-08-30 07:55:54,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 07:55:54,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-30 07:55:54,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 07:55:54,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 07:55:54,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-30 07:55:54,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017117555]
[2023-08-30 07:55:54,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017117555] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 07:55:54,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 07:55:54,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-08-30 07:55:54,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573194090]
[2023-08-30 07:55:54,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 07:55:54,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states
[2023-08-30 07:55:54,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-30 07:55:54,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2023-08-30 07:55:54,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2023-08-30 07:55:54,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 273
[2023-08-30 07:55:54,716 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 72 flow. Second operand has 4 states, 4 states have (on average 121.25) internal successors, (485), 4 states have internal predecessors, (485), 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)
[2023-08-30 07:55:54,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 07:55:54,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 273
[2023-08-30 07:55:54,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 07:55:54,758 INFO L130 PetriNetUnfolder]: 120/249 cut-off events.
[2023-08-30 07:55:54,759 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES.
[2023-08-30 07:55:54,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 249 events. 120/249 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 992 event pairs, 72 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 451. Up to 193 conditions per place.
[2023-08-30 07:55:54,760 INFO L137 encePairwiseOnDemand]: 270/273 looper letters, 20 selfloop transitions, 2 changer transitions 0/31 dead transitions.
[2023-08-30 07:55:54,760 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 31 transitions, 114 flow
[2023-08-30 07:55:54,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-30 07:55:54,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-30 07:55:54,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions.
[2023-08-30 07:55:54,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46764346764346765
[2023-08-30 07:55:54,762 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions.
[2023-08-30 07:55:54,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions.
[2023-08-30 07:55:54,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 07:55:54,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions.
[2023-08-30 07:55:54,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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)
[2023-08-30 07:55:54,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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)
[2023-08-30 07:55:54,766 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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)
[2023-08-30 07:55:54,766 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 72 flow. Second operand 3 states and 383 transitions.
[2023-08-30 07:55:54,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 31 transitions, 114 flow
[2023-08-30 07:55:54,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 31 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-08-30 07:55:54,767 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 70 flow
[2023-08-30 07:55:54,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=33, PETRI_TRANSITIONS=31}
[2023-08-30 07:55:54,768 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -9 predicate places.
[2023-08-30 07:55:54,769 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 70 flow
[2023-08-30 07:55:54,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 121.25) internal successors, (485), 4 states have internal predecessors, (485), 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)
[2023-08-30 07:55:54,769 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 07:55:54,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 07:55:54,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2023-08-30 07:55:54,770 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] ===
[2023-08-30 07:55:54,770 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 07:55:54,770 INFO L85 PathProgramCache]: Analyzing trace with hash -261057374, now seen corresponding path program 1 times
[2023-08-30 07:55:54,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-30 07:55:54,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104157078]
[2023-08-30 07:55:54,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 07:55:54,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-30 07:55:54,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 07:55:54,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 07:55:54,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-30 07:55:54,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104157078]
[2023-08-30 07:55:54,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104157078] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 07:55:54,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 07:55:54,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-08-30 07:55:54,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442096663]
[2023-08-30 07:55:54,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 07:55:54,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-08-30 07:55:54,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-30 07:55:54,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-08-30 07:55:54,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-08-30 07:55:54,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 273
[2023-08-30 07:55:54,827 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 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)
[2023-08-30 07:55:54,828 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 07:55:54,828 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 273
[2023-08-30 07:55:54,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 07:55:54,891 INFO L130 PetriNetUnfolder]: 189/435 cut-off events.
[2023-08-30 07:55:54,891 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES.
[2023-08-30 07:55:54,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 749 conditions, 435 events. 189/435 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2003 event pairs, 72 based on Foata normal form. 0/369 useless extension candidates. Maximal degree in co-relation 745. Up to 195 conditions per place.
[2023-08-30 07:55:54,893 INFO L137 encePairwiseOnDemand]: 270/273 looper letters, 33 selfloop transitions, 2 changer transitions 0/44 dead transitions.
[2023-08-30 07:55:54,893 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 44 transitions, 167 flow
[2023-08-30 07:55:54,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-30 07:55:54,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-30 07:55:54,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 423 transitions.
[2023-08-30 07:55:54,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5164835164835165
[2023-08-30 07:55:54,895 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 423 transitions.
[2023-08-30 07:55:54,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 423 transitions.
[2023-08-30 07:55:54,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 07:55:54,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 423 transitions.
[2023-08-30 07:55:54,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 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)
[2023-08-30 07:55:54,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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)
[2023-08-30 07:55:54,899 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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)
[2023-08-30 07:55:54,899 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 70 flow. Second operand 3 states and 423 transitions.
[2023-08-30 07:55:54,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 44 transitions, 167 flow
[2023-08-30 07:55:54,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 44 transitions, 163 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-08-30 07:55:54,901 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 78 flow
[2023-08-30 07:55:54,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=34, PETRI_TRANSITIONS=32}
[2023-08-30 07:55:54,901 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -8 predicate places.
[2023-08-30 07:55:54,902 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 78 flow
[2023-08-30 07:55:54,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 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)
[2023-08-30 07:55:54,902 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 07:55:54,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 07:55:54,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2023-08-30 07:55:54,903 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] ===
[2023-08-30 07:55:54,903 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 07:55:54,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1965737995, now seen corresponding path program 1 times
[2023-08-30 07:55:54,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-30 07:55:54,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482406345]
[2023-08-30 07:55:54,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 07:55:54,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-30 07:55:54,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 07:55:54,947 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 07:55:54,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-30 07:55:54,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482406345]
[2023-08-30 07:55:54,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482406345] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 07:55:54,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 07:55:54,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-08-30 07:55:54,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965345097]
[2023-08-30 07:55:54,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 07:55:54,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-08-30 07:55:54,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-30 07:55:54,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-08-30 07:55:54,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-08-30 07:55:54,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 273
[2023-08-30 07:55:54,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 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)
[2023-08-30 07:55:54,959 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 07:55:54,959 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 273
[2023-08-30 07:55:54,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 07:55:55,043 INFO L130 PetriNetUnfolder]: 297/642 cut-off events.
[2023-08-30 07:55:55,043 INFO L131 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES.
[2023-08-30 07:55:55,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1207 conditions, 642 events. 297/642 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3077 event pairs, 117 based on Foata normal form. 0/588 useless extension candidates. Maximal degree in co-relation 1202. Up to 300 conditions per place.
[2023-08-30 07:55:55,046 INFO L137 encePairwiseOnDemand]: 270/273 looper letters, 35 selfloop transitions, 2 changer transitions 0/46 dead transitions.
[2023-08-30 07:55:55,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 46 transitions, 191 flow
[2023-08-30 07:55:55,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-30 07:55:55,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-30 07:55:55,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 423 transitions.
[2023-08-30 07:55:55,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5164835164835165
[2023-08-30 07:55:55,048 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 423 transitions.
[2023-08-30 07:55:55,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 423 transitions.
[2023-08-30 07:55:55,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 07:55:55,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 423 transitions.
[2023-08-30 07:55:55,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 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)
[2023-08-30 07:55:55,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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)
[2023-08-30 07:55:55,052 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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)
[2023-08-30 07:55:55,052 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 78 flow. Second operand 3 states and 423 transitions.
[2023-08-30 07:55:55,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 46 transitions, 191 flow
[2023-08-30 07:55:55,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 46 transitions, 187 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-08-30 07:55:55,053 INFO L231 Difference]: Finished difference. Result has 36 places, 33 transitions, 88 flow
[2023-08-30 07:55:55,054 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=36, PETRI_TRANSITIONS=33}
[2023-08-30 07:55:55,054 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -6 predicate places.
[2023-08-30 07:55:55,054 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 33 transitions, 88 flow
[2023-08-30 07:55:55,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 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)
[2023-08-30 07:55:55,055 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 07:55:55,055 INFO L208 CegarLoopForPetriNet]: 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]
[2023-08-30 07:55:55,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6
[2023-08-30 07:55:55,055 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] ===
[2023-08-30 07:55:55,055 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 07:55:55,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1443448180, now seen corresponding path program 1 times
[2023-08-30 07:55:55,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-30 07:55:55,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641853831]
[2023-08-30 07:55:55,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 07:55:55,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-30 07:55:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 07:55:55,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 07:55:55,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-30 07:55:55,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641853831]
[2023-08-30 07:55:55,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641853831] provided 0 perfect and 1 imperfect interpolant sequences
[2023-08-30 07:55:55,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990956299]
[2023-08-30 07:55:55,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 07:55:55,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-08-30 07:55:55,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-08-30 07:55:55,121 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-08-30 07:55:55,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process
[2023-08-30 07:55:55,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 07:55:55,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-08-30 07:55:55,259 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-30 07:55:55,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 07:55:55,296 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2023-08-30 07:55:55,318 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 07:55:55,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990956299] provided 0 perfect and 2 imperfect interpolant sequences
[2023-08-30 07:55:55,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-08-30 07:55:55,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7
[2023-08-30 07:55:55,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424763377]
[2023-08-30 07:55:55,330 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-08-30 07:55:55,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states
[2023-08-30 07:55:55,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-30 07:55:55,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2023-08-30 07:55:55,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2023-08-30 07:55:55,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 273
[2023-08-30 07:55:55,381 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 88 flow. Second operand has 7 states, 7 states have (on average 129.42857142857142) internal successors, (906), 7 states have internal predecessors, (906), 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)
[2023-08-30 07:55:55,381 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 07:55:55,381 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 273
[2023-08-30 07:55:55,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 07:55:55,656 INFO L130 PetriNetUnfolder]: 593/1323 cut-off events.
[2023-08-30 07:55:55,657 INFO L131 PetriNetUnfolder]: For 270/270 co-relation queries the response was YES.
[2023-08-30 07:55:55,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2522 conditions, 1323 events. 593/1323 cut-off events. For 270/270 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 7089 event pairs, 42 based on Foata normal form. 74/1348 useless extension candidates. Maximal degree in co-relation 2516. Up to 168 conditions per place.
[2023-08-30 07:55:55,664 INFO L137 encePairwiseOnDemand]: 266/273 looper letters, 105 selfloop transitions, 27 changer transitions 0/141 dead transitions.
[2023-08-30 07:55:55,664 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 141 transitions, 631 flow
[2023-08-30 07:55:55,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2023-08-30 07:55:55,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states.
[2023-08-30 07:55:55,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1754 transitions.
[2023-08-30 07:55:55,669 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49422372499295575
[2023-08-30 07:55:55,669 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1754 transitions.
[2023-08-30 07:55:55,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1754 transitions.
[2023-08-30 07:55:55,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 07:55:55,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1754 transitions.
[2023-08-30 07:55:55,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 134.92307692307693) internal successors, (1754), 13 states have internal predecessors, (1754), 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)
[2023-08-30 07:55:55,677 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 273.0) internal successors, (3822), 14 states have internal predecessors, (3822), 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)
[2023-08-30 07:55:55,680 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 273.0) internal successors, (3822), 14 states have internal predecessors, (3822), 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)
[2023-08-30 07:55:55,680 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 88 flow. Second operand 13 states and 1754 transitions.
[2023-08-30 07:55:55,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 141 transitions, 631 flow
[2023-08-30 07:55:55,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 141 transitions, 625 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-08-30 07:55:55,684 INFO L231 Difference]: Finished difference. Result has 57 places, 55 transitions, 302 flow
[2023-08-30 07:55:55,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=302, PETRI_PLACES=57, PETRI_TRANSITIONS=55}
[2023-08-30 07:55:55,686 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 15 predicate places.
[2023-08-30 07:55:55,687 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 55 transitions, 302 flow
[2023-08-30 07:55:55,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 129.42857142857142) internal successors, (906), 7 states have internal predecessors, (906), 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)
[2023-08-30 07:55:55,687 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 07:55:55,687 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 07:55:55,700 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0
[2023-08-30 07:55:55,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-08-30 07:55:55,894 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] ===
[2023-08-30 07:55:55,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 07:55:55,894 INFO L85 PathProgramCache]: Analyzing trace with hash 938211468, now seen corresponding path program 1 times
[2023-08-30 07:55:55,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-30 07:55:55,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774996083]
[2023-08-30 07:55:55,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 07:55:55,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-30 07:55:55,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 07:55:55,980 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked.
[2023-08-30 07:55:55,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-30 07:55:55,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774996083]
[2023-08-30 07:55:55,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774996083] provided 0 perfect and 1 imperfect interpolant sequences
[2023-08-30 07:55:55,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478687334]
[2023-08-30 07:55:55,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 07:55:55,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-08-30 07:55:55,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-08-30 07:55:55,983 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-08-30 07:55:56,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process
[2023-08-30 07:55:56,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 07:55:56,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-08-30 07:55:56,112 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-30 07:55:56,157 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked.
[2023-08-30 07:55:56,162 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-08-30 07:55:56,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478687334] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 07:55:56,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-08-30 07:55:56,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6
[2023-08-30 07:55:56,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583155443]
[2023-08-30 07:55:56,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 07:55:56,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states
[2023-08-30 07:55:56,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-30 07:55:56,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2023-08-30 07:55:56,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2023-08-30 07:55:56,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 273
[2023-08-30 07:55:56,179 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 55 transitions, 302 flow. Second operand has 5 states, 5 states have (on average 128.8) internal successors, (644), 5 states have internal predecessors, (644), 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)
[2023-08-30 07:55:56,179 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 07:55:56,180 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 273
[2023-08-30 07:55:56,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 07:55:56,740 INFO L130 PetriNetUnfolder]: 2550/4433 cut-off events.
[2023-08-30 07:55:56,740 INFO L131 PetriNetUnfolder]: For 5385/5385 co-relation queries the response was YES.
[2023-08-30 07:55:56,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11736 conditions, 4433 events. 2550/4433 cut-off events. For 5385/5385 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 23912 event pairs, 485 based on Foata normal form. 0/4081 useless extension candidates. Maximal degree in co-relation 11721. Up to 1651 conditions per place.
[2023-08-30 07:55:56,771 INFO L137 encePairwiseOnDemand]: 264/273 looper letters, 151 selfloop transitions, 18 changer transitions 0/172 dead transitions.
[2023-08-30 07:55:56,771 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 172 transitions, 1280 flow
[2023-08-30 07:55:56,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2023-08-30 07:55:56,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states.
[2023-08-30 07:55:56,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 964 transitions.
[2023-08-30 07:55:56,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5044479330193616
[2023-08-30 07:55:56,774 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 964 transitions.
[2023-08-30 07:55:56,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 964 transitions.
[2023-08-30 07:55:56,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 07:55:56,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 964 transitions.
[2023-08-30 07:55:56,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 137.71428571428572) internal successors, (964), 7 states have internal predecessors, (964), 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)
[2023-08-30 07:55:56,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 273.0) internal successors, (2184), 8 states have internal predecessors, (2184), 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)
[2023-08-30 07:55:56,780 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 273.0) internal successors, (2184), 8 states have internal predecessors, (2184), 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)
[2023-08-30 07:55:56,780 INFO L175 Difference]: Start difference. First operand has 57 places, 55 transitions, 302 flow. Second operand 7 states and 964 transitions.
[2023-08-30 07:55:56,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 172 transitions, 1280 flow
[2023-08-30 07:55:56,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 172 transitions, 1179 flow, removed 33 selfloop flow, removed 2 redundant places.
[2023-08-30 07:55:56,808 INFO L231 Difference]: Finished difference. Result has 67 places, 73 transitions, 408 flow
[2023-08-30 07:55:56,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=408, PETRI_PLACES=67, PETRI_TRANSITIONS=73}
[2023-08-30 07:55:56,810 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 25 predicate places.
[2023-08-30 07:55:56,810 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 73 transitions, 408 flow
[2023-08-30 07:55:56,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 128.8) internal successors, (644), 5 states have internal predecessors, (644), 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)
[2023-08-30 07:55:56,810 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 07:55:56,810 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 07:55:56,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0
[2023-08-30 07:55:57,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8
[2023-08-30 07:55:57,023 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] ===
[2023-08-30 07:55:57,024 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 07:55:57,024 INFO L85 PathProgramCache]: Analyzing trace with hash 646760182, now seen corresponding path program 2 times
[2023-08-30 07:55:57,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-30 07:55:57,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049770084]
[2023-08-30 07:55:57,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 07:55:57,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-30 07:55:57,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 07:55:57,130 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked.
[2023-08-30 07:55:57,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-30 07:55:57,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049770084]
[2023-08-30 07:55:57,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049770084] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 07:55:57,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 07:55:57,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-08-30 07:55:57,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875419809]
[2023-08-30 07:55:57,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 07:55:57,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-08-30 07:55:57,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-30 07:55:57,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-08-30 07:55:57,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-08-30 07:55:57,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 273
[2023-08-30 07:55:57,152 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 73 transitions, 408 flow. Second operand has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 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)
[2023-08-30 07:55:57,152 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 07:55:57,152 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 273
[2023-08-30 07:55:57,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 07:55:57,399 INFO L130 PetriNetUnfolder]: 813/1815 cut-off events.
[2023-08-30 07:55:57,400 INFO L131 PetriNetUnfolder]: For 3953/3953 co-relation queries the response was YES.
[2023-08-30 07:55:57,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5707 conditions, 1815 events. 813/1815 cut-off events. For 3953/3953 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 10202 event pairs, 177 based on Foata normal form. 198/2012 useless extension candidates. Maximal degree in co-relation 5686. Up to 794 conditions per place.
[2023-08-30 07:55:57,414 INFO L137 encePairwiseOnDemand]: 265/273 looper letters, 47 selfloop transitions, 20 changer transitions 0/80 dead transitions.
[2023-08-30 07:55:57,414 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 80 transitions, 595 flow
[2023-08-30 07:55:57,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-30 07:55:57,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-30 07:55:57,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 407 transitions.
[2023-08-30 07:55:57,416 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49694749694749696
[2023-08-30 07:55:57,416 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 407 transitions.
[2023-08-30 07:55:57,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 407 transitions.
[2023-08-30 07:55:57,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 07:55:57,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 407 transitions.
[2023-08-30 07:55:57,418 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 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)
[2023-08-30 07:55:57,419 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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)
[2023-08-30 07:55:57,420 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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)
[2023-08-30 07:55:57,420 INFO L175 Difference]: Start difference. First operand has 67 places, 73 transitions, 408 flow. Second operand 3 states and 407 transitions.
[2023-08-30 07:55:57,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 80 transitions, 595 flow
[2023-08-30 07:55:57,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 80 transitions, 577 flow, removed 8 selfloop flow, removed 2 redundant places.
[2023-08-30 07:55:57,433 INFO L231 Difference]: Finished difference. Result has 66 places, 62 transitions, 369 flow
[2023-08-30 07:55:57,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=369, PETRI_PLACES=66, PETRI_TRANSITIONS=62}
[2023-08-30 07:55:57,434 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 24 predicate places.
[2023-08-30 07:55:57,434 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 62 transitions, 369 flow
[2023-08-30 07:55:57,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 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)
[2023-08-30 07:55:57,434 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 07:55:57,435 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 07:55:57,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9
[2023-08-30 07:55:57,435 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] ===
[2023-08-30 07:55:57,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 07:55:57,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1563860526, now seen corresponding path program 3 times
[2023-08-30 07:55:57,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-30 07:55:57,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692959441]
[2023-08-30 07:55:57,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 07:55:57,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-30 07:55:57,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 07:55:57,483 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked.
[2023-08-30 07:55:57,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-30 07:55:57,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692959441]
[2023-08-30 07:55:57,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692959441] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 07:55:57,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 07:55:57,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2023-08-30 07:55:57,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509231693]
[2023-08-30 07:55:57,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 07:55:57,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-08-30 07:55:57,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-30 07:55:57,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-08-30 07:55:57,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-08-30 07:55:57,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 273
[2023-08-30 07:55:57,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 62 transitions, 369 flow. Second operand has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 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)
[2023-08-30 07:55:57,500 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 07:55:57,500 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 273
[2023-08-30 07:55:57,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 07:55:57,685 INFO L130 PetriNetUnfolder]: 597/1255 cut-off events.
[2023-08-30 07:55:57,685 INFO L131 PetriNetUnfolder]: For 2785/2789 co-relation queries the response was YES.
[2023-08-30 07:55:57,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4400 conditions, 1255 events. 597/1255 cut-off events. For 2785/2789 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6064 event pairs, 146 based on Foata normal form. 54/1303 useless extension candidates. Maximal degree in co-relation 4380. Up to 849 conditions per place.
[2023-08-30 07:55:57,694 INFO L137 encePairwiseOnDemand]: 268/273 looper letters, 61 selfloop transitions, 3 changer transitions 3/73 dead transitions.
[2023-08-30 07:55:57,694 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 73 transitions, 557 flow
[2023-08-30 07:55:57,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-30 07:55:57,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-30 07:55:57,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 420 transitions.
[2023-08-30 07:55:57,696 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5128205128205128
[2023-08-30 07:55:57,697 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 420 transitions.
[2023-08-30 07:55:57,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 420 transitions.
[2023-08-30 07:55:57,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 07:55:57,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 420 transitions.
[2023-08-30 07:55:57,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 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)
[2023-08-30 07:55:57,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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)
[2023-08-30 07:55:57,701 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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)
[2023-08-30 07:55:57,701 INFO L175 Difference]: Start difference. First operand has 66 places, 62 transitions, 369 flow. Second operand 3 states and 420 transitions.
[2023-08-30 07:55:57,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 73 transitions, 557 flow
[2023-08-30 07:55:57,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 73 transitions, 534 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-08-30 07:55:57,710 INFO L231 Difference]: Finished difference. Result has 67 places, 57 transitions, 322 flow
[2023-08-30 07:55:57,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=322, PETRI_PLACES=67, PETRI_TRANSITIONS=57}
[2023-08-30 07:55:57,711 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 25 predicate places.
[2023-08-30 07:55:57,711 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 57 transitions, 322 flow
[2023-08-30 07:55:57,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 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)
[2023-08-30 07:55:57,712 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 07:55:57,712 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 07:55:57,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10
[2023-08-30 07:55:57,712 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] ===
[2023-08-30 07:55:57,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 07:55:57,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1982420316, now seen corresponding path program 4 times
[2023-08-30 07:55:57,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-30 07:55:57,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033403304]
[2023-08-30 07:55:57,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 07:55:57,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-30 07:55:57,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 07:55:57,835 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2023-08-30 07:55:57,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-30 07:55:57,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033403304]
[2023-08-30 07:55:57,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033403304] provided 0 perfect and 1 imperfect interpolant sequences
[2023-08-30 07:55:57,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473570372]
[2023-08-30 07:55:57,836 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2023-08-30 07:55:57,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-08-30 07:55:57,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-08-30 07:55:57,837 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-08-30 07:55:57,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process
[2023-08-30 07:55:57,945 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2023-08-30 07:55:57,946 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-08-30 07:55:57,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-08-30 07:55:57,949 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-30 07:55:57,996 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2023-08-30 07:55:57,996 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2023-08-30 07:55:58,049 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2023-08-30 07:55:58,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [473570372] provided 0 perfect and 2 imperfect interpolant sequences
[2023-08-30 07:55:58,049 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences.
[2023-08-30 07:55:58,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6
[2023-08-30 07:55:58,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724700407]
[2023-08-30 07:55:58,050 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton
[2023-08-30 07:55:58,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-08-30 07:55:58,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-30 07:55:58,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-08-30 07:55:58,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30
[2023-08-30 07:55:58,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 273
[2023-08-30 07:55:58,066 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 57 transitions, 322 flow. Second operand has 6 states, 6 states have (on average 133.33333333333334) internal successors, (800), 6 states have internal predecessors, (800), 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)
[2023-08-30 07:55:58,066 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 07:55:58,066 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 273
[2023-08-30 07:55:58,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 07:55:58,336 INFO L130 PetriNetUnfolder]: 487/1163 cut-off events.
[2023-08-30 07:55:58,336 INFO L131 PetriNetUnfolder]: For 2543/2573 co-relation queries the response was YES.
[2023-08-30 07:55:58,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3637 conditions, 1163 events. 487/1163 cut-off events. For 2543/2573 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5971 event pairs, 90 based on Foata normal form. 60/1215 useless extension candidates. Maximal degree in co-relation 3616. Up to 258 conditions per place.
[2023-08-30 07:55:58,345 INFO L137 encePairwiseOnDemand]: 269/273 looper letters, 61 selfloop transitions, 11 changer transitions 0/86 dead transitions.
[2023-08-30 07:55:58,345 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 86 transitions, 630 flow
[2023-08-30 07:55:58,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2023-08-30 07:55:58,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2023-08-30 07:55:58,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 695 transitions.
[2023-08-30 07:55:58,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5091575091575091
[2023-08-30 07:55:58,348 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 695 transitions.
[2023-08-30 07:55:58,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 695 transitions.
[2023-08-30 07:55:58,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 07:55:58,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 695 transitions.
[2023-08-30 07:55:58,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 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)
[2023-08-30 07:55:58,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 273.0) internal successors, (1638), 6 states have internal predecessors, (1638), 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)
[2023-08-30 07:55:58,354 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 273.0) internal successors, (1638), 6 states have internal predecessors, (1638), 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)
[2023-08-30 07:55:58,354 INFO L175 Difference]: Start difference. First operand has 67 places, 57 transitions, 322 flow. Second operand 5 states and 695 transitions.
[2023-08-30 07:55:58,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 86 transitions, 630 flow
[2023-08-30 07:55:58,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 86 transitions, 624 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-08-30 07:55:58,361 INFO L231 Difference]: Finished difference. Result has 71 places, 58 transitions, 354 flow
[2023-08-30 07:55:58,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=354, PETRI_PLACES=71, PETRI_TRANSITIONS=58}
[2023-08-30 07:55:58,362 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 29 predicate places.
[2023-08-30 07:55:58,362 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 58 transitions, 354 flow
[2023-08-30 07:55:58,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 133.33333333333334) internal successors, (800), 6 states have internal predecessors, (800), 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)
[2023-08-30 07:55:58,363 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 07:55:58,363 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 07:55:58,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0
[2023-08-30 07:55:58,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-08-30 07:55:58,569 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] ===
[2023-08-30 07:55:58,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 07:55:58,569 INFO L85 PathProgramCache]: Analyzing trace with hash -344142387, now seen corresponding path program 5 times
[2023-08-30 07:55:58,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-30 07:55:58,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895124930]
[2023-08-30 07:55:58,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 07:55:58,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-30 07:55:58,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 07:55:58,783 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked.
[2023-08-30 07:55:58,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-30 07:55:58,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895124930]
[2023-08-30 07:55:58,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895124930] provided 0 perfect and 1 imperfect interpolant sequences
[2023-08-30 07:55:58,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376137206]
[2023-08-30 07:55:58,784 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2023-08-30 07:55:58,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-08-30 07:55:58,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-08-30 07:55:58,785 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-08-30 07:55:58,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process
[2023-08-30 07:55:58,918 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s)
[2023-08-30 07:55:58,919 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-08-30 07:55:58,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-08-30 07:55:58,923 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-30 07:55:58,972 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked.
[2023-08-30 07:55:58,972 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-08-30 07:55:58,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376137206] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 07:55:58,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-08-30 07:55:58,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 7
[2023-08-30 07:55:58,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732034238]
[2023-08-30 07:55:58,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 07:55:58,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-08-30 07:55:58,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-30 07:55:58,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-08-30 07:55:58,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56
[2023-08-30 07:55:59,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 273
[2023-08-30 07:55:59,004 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 58 transitions, 354 flow. Second operand has 6 states, 6 states have (on average 126.83333333333333) internal successors, (761), 6 states have internal predecessors, (761), 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)
[2023-08-30 07:55:59,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 07:55:59,004 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 273
[2023-08-30 07:55:59,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 07:55:59,272 INFO L130 PetriNetUnfolder]: 677/1348 cut-off events.
[2023-08-30 07:55:59,272 INFO L131 PetriNetUnfolder]: For 3860/3860 co-relation queries the response was YES.
[2023-08-30 07:55:59,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4867 conditions, 1348 events. 677/1348 cut-off events. For 3860/3860 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5922 event pairs, 170 based on Foata normal form. 24/1370 useless extension candidates. Maximal degree in co-relation 4845. Up to 520 conditions per place.
[2023-08-30 07:55:59,284 INFO L137 encePairwiseOnDemand]: 262/273 looper letters, 92 selfloop transitions, 20 changer transitions 0/114 dead transitions.
[2023-08-30 07:55:59,285 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 114 transitions, 959 flow
[2023-08-30 07:55:59,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2023-08-30 07:55:59,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2023-08-30 07:55:59,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1037 transitions.
[2023-08-30 07:55:59,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4748168498168498
[2023-08-30 07:55:59,289 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1037 transitions.
[2023-08-30 07:55:59,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1037 transitions.
[2023-08-30 07:55:59,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 07:55:59,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1037 transitions.
[2023-08-30 07:55:59,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 129.625) internal successors, (1037), 8 states have internal predecessors, (1037), 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)
[2023-08-30 07:55:59,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 273.0) internal successors, (2457), 9 states have internal predecessors, (2457), 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)
[2023-08-30 07:55:59,296 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 273.0) internal successors, (2457), 9 states have internal predecessors, (2457), 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)
[2023-08-30 07:55:59,296 INFO L175 Difference]: Start difference. First operand has 71 places, 58 transitions, 354 flow. Second operand 8 states and 1037 transitions.
[2023-08-30 07:55:59,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 114 transitions, 959 flow
[2023-08-30 07:55:59,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 114 transitions, 914 flow, removed 4 selfloop flow, removed 2 redundant places.
[2023-08-30 07:55:59,307 INFO L231 Difference]: Finished difference. Result has 78 places, 60 transitions, 415 flow
[2023-08-30 07:55:59,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=415, PETRI_PLACES=78, PETRI_TRANSITIONS=60}
[2023-08-30 07:55:59,309 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 36 predicate places.
[2023-08-30 07:55:59,309 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 60 transitions, 415 flow
[2023-08-30 07:55:59,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 126.83333333333333) internal successors, (761), 6 states have internal predecessors, (761), 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)
[2023-08-30 07:55:59,310 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 07:55:59,310 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 07:55:59,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0
[2023-08-30 07:55:59,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-08-30 07:55:59,513 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] ===
[2023-08-30 07:55:59,514 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 07:55:59,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1681654891, now seen corresponding path program 6 times
[2023-08-30 07:55:59,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-30 07:55:59,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711974181]
[2023-08-30 07:55:59,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 07:55:59,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-30 07:55:59,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 07:55:59,749 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 23 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked.
[2023-08-30 07:55:59,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace
[2023-08-30 07:55:59,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711974181]
[2023-08-30 07:55:59,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711974181] provided 0 perfect and 1 imperfect interpolant sequences
[2023-08-30 07:55:59,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169122293]
[2023-08-30 07:55:59,750 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE
[2023-08-30 07:55:59,750 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true
[2023-08-30 07:55:59,750 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-08-30 07:55:59,753 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null)
[2023-08-30 07:55:59,763 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process
[2023-08-30 07:55:59,873 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s)
[2023-08-30 07:55:59,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-08-30 07:55:59,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 16 conjunts are in the unsatisfiable core
[2023-08-30 07:55:59,877 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-30 07:56:00,323 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked.
[2023-08-30 07:56:00,323 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-08-30 07:56:00,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169122293] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 07:56:00,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences.
[2023-08-30 07:56:00,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6
[2023-08-30 07:56:00,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465889087]
[2023-08-30 07:56:00,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 07:56:00,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-08-30 07:56:00,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL
[2023-08-30 07:56:00,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-08-30 07:56:00,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42
[2023-08-30 07:56:00,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 273
[2023-08-30 07:56:00,400 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 60 transitions, 415 flow. Second operand has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 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)
[2023-08-30 07:56:00,401 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 07:56:00,401 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 273
[2023-08-30 07:56:00,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 07:56:00,552 INFO L130 PetriNetUnfolder]: 459/1066 cut-off events.
[2023-08-30 07:56:00,552 INFO L131 PetriNetUnfolder]: For 3039/3067 co-relation queries the response was YES.
[2023-08-30 07:56:00,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4013 conditions, 1066 events. 459/1066 cut-off events. For 3039/3067 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 5073 event pairs, 281 based on Foata normal form. 0/1052 useless extension candidates. Maximal degree in co-relation 3988. Up to 780 conditions per place.
[2023-08-30 07:56:00,561 INFO L137 encePairwiseOnDemand]: 271/273 looper letters, 43 selfloop transitions, 1 changer transitions 0/59 dead transitions.
[2023-08-30 07:56:00,561 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 59 transitions, 501 flow
[2023-08-30 07:56:00,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-30 07:56:00,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-30 07:56:00,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 388 transitions.
[2023-08-30 07:56:00,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47374847374847373
[2023-08-30 07:56:00,563 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 388 transitions.
[2023-08-30 07:56:00,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 388 transitions.
[2023-08-30 07:56:00,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 07:56:00,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 388 transitions.
[2023-08-30 07:56:00,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 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)
[2023-08-30 07:56:00,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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)
[2023-08-30 07:56:00,566 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 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)
[2023-08-30 07:56:00,566 INFO L175 Difference]: Start difference. First operand has 78 places, 60 transitions, 415 flow. Second operand 3 states and 388 transitions.
[2023-08-30 07:56:00,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 59 transitions, 501 flow
[2023-08-30 07:56:00,573 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 59 transitions, 472 flow, removed 1 selfloop flow, removed 6 redundant places.
[2023-08-30 07:56:00,574 INFO L231 Difference]: Finished difference. Result has 73 places, 59 transitions, 386 flow
[2023-08-30 07:56:00,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=386, PETRI_PLACES=73, PETRI_TRANSITIONS=59}
[2023-08-30 07:56:00,575 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 31 predicate places.
[2023-08-30 07:56:00,575 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 59 transitions, 386 flow
[2023-08-30 07:56:00,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 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)
[2023-08-30 07:56:00,575 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 07:56:00,575 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 07:56:00,587 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0
[2023-08-30 07:56:00,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13
[2023-08-30 07:56:00,782 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] ===
[2023-08-30 07:56:00,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 07:56:00,782 INFO L85 PathProgramCache]: Analyzing trace with hash 181541812, now seen corresponding path program 2 times
[2023-08-30 07:56:00,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL
[2023-08-30 07:56:00,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096594791]
[2023-08-30 07:56:00,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 07:56:00,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms
[2023-08-30 07:56:00,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-08-30 07:56:00,826 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2023-08-30 07:56:00,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-08-30 07:56:00,892 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace
[2023-08-30 07:56:00,892 INFO L360 BasicCegarLoop]: Counterexample is feasible
[2023-08-30 07:56:00,894 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (11 of 12 remaining)
[2023-08-30 07:56:00,895 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining)
[2023-08-30 07:56:00,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining)
[2023-08-30 07:56:00,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining)
[2023-08-30 07:56:00,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining)
[2023-08-30 07:56:00,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining)
[2023-08-30 07:56:00,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining)
[2023-08-30 07:56:00,896 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining)
[2023-08-30 07:56:00,897 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 12 remaining)
[2023-08-30 07:56:00,897 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining)
[2023-08-30 07:56:00,897 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining)
[2023-08-30 07:56:00,897 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining)
[2023-08-30 07:56:00,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14
[2023-08-30 07:56:00,898 INFO L445 BasicCegarLoop]: Path program histogram: [6, 2, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 07:56:00,902 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances
[2023-08-30 07:56:00,903 INFO L178 ceAbstractionStarter]: Computing trace abstraction results
[2023-08-30 07:56:00,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 07:56:00 BasicIcfg
[2023-08-30 07:56:00,986 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-08-30 07:56:00,987 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2023-08-30 07:56:00,987 INFO L271 PluginConnector]: Initializing Witness Printer...
[2023-08-30 07:56:00,987 INFO L275 PluginConnector]: Witness Printer initialized
[2023-08-30 07:56:00,988 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:55:46" (3/4) ...
[2023-08-30 07:56:00,990 INFO L140 WitnessPrinter]: No result that supports witness generation found
[2023-08-30 07:56:00,990 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2023-08-30 07:56:00,991 INFO L158 Benchmark]: Toolchain (without parser) took 15772.02ms. Allocated memory was 96.5MB in the beginning and 323.0MB in the end (delta: 226.5MB). Free memory was 73.1MB in the beginning and 256.9MB in the end (delta: -183.7MB). Peak memory consumption was 43.9MB. Max. memory is 16.1GB.
[2023-08-30 07:56:00,991 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 67.1MB. Free memory is still 45.0MB. There was no memory consumed. Max. memory is 16.1GB.
[2023-08-30 07:56:00,991 INFO L158 Benchmark]: CACSL2BoogieTranslator took 659.55ms. Allocated memory is still 96.5MB. Free memory was 72.9MB in the beginning and 70.3MB in the end (delta: 2.6MB). Peak memory consumption was 28.6MB. Max. memory is 16.1GB.
[2023-08-30 07:56:00,992 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.50ms. Allocated memory is still 96.5MB. Free memory was 70.3MB in the beginning and 67.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2023-08-30 07:56:00,992 INFO L158 Benchmark]: Boogie Preprocessor took 56.92ms. Allocated memory is still 96.5MB. Free memory was 67.8MB in the beginning and 66.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2023-08-30 07:56:00,992 INFO L158 Benchmark]: RCFGBuilder took 581.86ms. Allocated memory is still 96.5MB. Free memory was 66.2MB in the beginning and 48.5MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
[2023-08-30 07:56:00,993 INFO L158 Benchmark]: TraceAbstraction took 14378.10ms. Allocated memory was 96.5MB in the beginning and 323.0MB in the end (delta: 226.5MB). Free memory was 48.0MB in the beginning and 257.9MB in the end (delta: -209.9MB). Peak memory consumption was 193.6MB. Max. memory is 16.1GB.
[2023-08-30 07:56:00,993 INFO L158 Benchmark]: Witness Printer took 3.59ms. Allocated memory is still 323.0MB. Free memory was 257.9MB in the beginning and 256.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB.
[2023-08-30 07:56:00,995 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.16ms. Allocated memory is still 67.1MB. Free memory is still 45.0MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 659.55ms. Allocated memory is still 96.5MB. Free memory was 72.9MB in the beginning and 70.3MB in the end (delta: 2.6MB). Peak memory consumption was 28.6MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 83.50ms. Allocated memory is still 96.5MB. Free memory was 70.3MB in the beginning and 67.8MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 56.92ms. Allocated memory is still 96.5MB. Free memory was 67.8MB in the beginning and 66.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* RCFGBuilder took 581.86ms. Allocated memory is still 96.5MB. Free memory was 66.2MB in the beginning and 48.5MB in the end (delta: 17.7MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB.
* TraceAbstraction took 14378.10ms. Allocated memory was 96.5MB in the beginning and 323.0MB in the end (delta: 226.5MB). Free memory was 48.0MB in the beginning and 257.9MB in the end (delta: -209.9MB). Peak memory consumption was 193.6MB. Max. memory is 16.1GB.
* Witness Printer took 3.59ms. Allocated memory is still 323.0MB. Free memory was 257.9MB in the beginning and 256.9MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: PetriNetLargeBlockEncoding benchmarks
Lipton Reduction Statistics: ReductionTime: 6.4s, 134 PlacesBefore, 42 PlacesAfterwards, 137 TransitionsBefore, 40 TransitionsAfterwards, 2314 CoEnabledTransitionPairs, 7 FixpointIterations, 71 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 8 ConcurrentYvCompositions, 5 ChoiceCompositions, 130 TotalNumberOfCompositions, 5425 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3215, independent: 3049, independent conditional: 0, independent unconditional: 3049, dependent: 166, dependent conditional: 0, dependent unconditional: 166, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1186, independent: 1162, independent conditional: 0, independent unconditional: 1162, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3215, independent: 1887, independent conditional: 0, independent unconditional: 1887, dependent: 142, dependent conditional: 0, dependent unconditional: 142, unknown: 1186, unknown conditional: 0, unknown unconditional: 1186] , Statistics on independence cache: Total cache size (in pairs): 174, Positive cache size: 159, Positive conditional cache size: 0, Positive unconditional cache size: 159, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0
- UnprovableResult [Line: 919]: Unable to prove that all allocated memory was freed
Unable to prove that all allocated memory was freed
Reason: overapproximation of memtrack at line 919.
Possible FailurePath:
[L870] 0 int num;
[L871] 0 unsigned long total;
[L872] 0 int flag;
[L873] 0 pthread_mutex_t m;
[L874] 0 pthread_cond_t empty, full;
[L907] 0 pthread_t t1, t2;
[L908] 0 num = 0
[L909] 0 total = 0
[L913] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0)
VAL [arg={0:0}, empty={4:0}, flag=0, full={5:0}, m={3:0}, num=0, pthread_create(&t1, 0, thread1, 0)=-2, t1={6:0}, t2={7:0}, total=0]
[L876] 1 int i;
[L877] 1 i = 0
VAL [arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, total=0]
[L878] COND TRUE 1 i < 3
[L880] COND FALSE 1 !(num > 0)
VAL [arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, total=0]
[L882] 1 num++
[L914] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0)
VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=1, pthread_create(&t2, 0, thread2, 0)=-1, t1={6:0}, t2={7:0}, total=0]
[L915] 0 \read(t1)
VAL [\read(t1)=-2, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=1, t1={6:0}, t2={7:0}, total=0]
[L890] 2 int j;
[L891] 2 j = 0
VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, j=0, m={3:0}, num=1, total=0]
[L892] COND TRUE 2 j < 3
[L885] 1 i++
VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0]
[L894] COND FALSE 2 !(num == 0)
[L896] 2 total = total + j
VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0]
[L897] 2 num--
[L900] 2 j++
VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=0, total=0]
[L878] COND TRUE 1 i < 3
[L880] COND FALSE 1 !(num > 0)
VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=0, total=0]
[L882] 1 num++
[L892] COND TRUE 2 j < 3
[L894] COND FALSE 2 !(num == 0)
[L896] 2 total = total + j
VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=1, total=1]
[L897] 2 num--
[L900] 2 j++
VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=2, m={3:0}, num=0, total=1]
[L885] 1 i++
VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=0, total=1]
[L878] COND TRUE 1 i < 3
[L880] COND FALSE 1 !(num > 0)
VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=0, total=1]
[L882] 1 num++
[L892] COND TRUE 2 j < 3
[L894] COND FALSE 2 !(num == 0)
[L896] 2 total = total + j
VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=1, total=3]
[L897] 2 num--
[L900] 2 j++
VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=3, m={3:0}, num=0, total=3]
[L892] COND FALSE 2 !(j < 3)
[L902] 2 total = total + j
[L903] 2 flag = 1
[L904] 2 return ((void *)0);
[L885] 1 i++
VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, total=6]
[L878] COND FALSE 1 !(i < 3)
[L887] 1 return ((void *)0);
[L915] FCALL, JOIN 1 pthread_join(t1, 0)
VAL [\read(t1)=-2, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={6:0}, t2={7:0}, total=6]
[L916] 0 \read(t2)
VAL [\read(t2)=-1, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={6:0}, t2={7:0}, total=6]
[L916] FCALL, JOIN 2 pthread_join(t2, 0)
VAL [\read(t2)=-1, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={6:0}, t2={7:0}, total=6]
[L917] COND TRUE 0 \read(flag)
[L918] COND FALSE 0 !(total != ((3 * (3 + 1)) / 2))
[L919] 0 reach_error()
VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={6:0}, t2={7:0}, total=6]
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 906]: Unable to prove that all allocated memory was freed
Unable to prove that all allocated memory was freed
Reason: Not analyzed.
- UnprovableResult [Line: 914]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users)
Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users)
Reason: Not analyzed.
- UnprovableResult [Line: 913]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users)
Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users)
Reason: Not analyzed.
- StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances
CFG has 5 procedures, 179 locations, 12 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 14.1s, OverallIterations: 15, TraceHistogramMax: 3, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 862 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 571 mSDsluCounter, 121 SdHoareTripleChecker+Invalid, 1.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 28 mSDsCounter, 86 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1409 IncrementalHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 86 mSolverCounterUnsat, 93 mSDtfsCounter, 1409 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 320 GetRequests, 266 SyntacticMatches, 7 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=415occurred in iteration=13, InterpolantAutomatonStates: 62, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 567 NumberOfCodeBlocks, 526 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 564 ConstructedInterpolants, 45 QuantifiedInterpolants, 2223 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1343 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 21 InterpolantComputations, 12 PerfectInterpolantSequences, 297/345 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces
[2023-08-30 07:56:01,023 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Using bit-precise analysis
Retrying with bit-precise analysis
### Bit-precise run ###
Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
--witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER
--- Real Ultimate output ---
This is Ultimate 0.2.3-?-b8dbc81
[2023-08-30 07:56:02,951 INFO L177 SettingsManager]: Resetting all preferences to default values...
[2023-08-30 07:56:02,953 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values
[2023-08-30 07:56:03,000 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2023-08-30 07:56:03,000 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2023-08-30 07:56:03,004 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2023-08-30 07:56:03,006 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2023-08-30 07:56:03,009 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values
[2023-08-30 07:56:03,011 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values
[2023-08-30 07:56:03,016 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values
[2023-08-30 07:56:03,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values
[2023-08-30 07:56:03,020 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2023-08-30 07:56:03,020 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values
[2023-08-30 07:56:03,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values
[2023-08-30 07:56:03,025 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2023-08-30 07:56:03,032 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values
[2023-08-30 07:56:03,033 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2023-08-30 07:56:03,034 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2023-08-30 07:56:03,036 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2023-08-30 07:56:03,038 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values
[2023-08-30 07:56:03,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2023-08-30 07:56:03,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2023-08-30 07:56:03,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values
[2023-08-30 07:56:03,047 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2023-08-30 07:56:03,052 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2023-08-30 07:56:03,056 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2023-08-30 07:56:03,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2023-08-30 07:56:03,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values
[2023-08-30 07:56:03,059 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values
[2023-08-30 07:56:03,059 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring...
[2023-08-30 07:56:03,060 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values
[2023-08-30 07:56:03,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2023-08-30 07:56:03,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values
[2023-08-30 07:56:03,064 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values
[2023-08-30 07:56:03,065 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2023-08-30 07:56:03,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values
[2023-08-30 07:56:03,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2023-08-30 07:56:03,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring...
[2023-08-30 07:56:03,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values
[2023-08-30 07:56:03,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values
[2023-08-30 07:56:03,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values...
[2023-08-30 07:56:03,069 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf
[2023-08-30 07:56:03,122 INFO L113 SettingsManager]: Loading preferences was successful
[2023-08-30 07:56:03,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file:
[2023-08-30 07:56:03,124 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults:
[2023-08-30 07:56:03,124 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR;
[2023-08-30 07:56:03,125 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2023-08-30 07:56:03,125 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS
[2023-08-30 07:56:03,126 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2023-08-30 07:56:03,126 INFO L138 SettingsManager]: * Create parallel compositions if possible=false
[2023-08-30 07:56:03,126 INFO L138 SettingsManager]: * Use SBE=true
[2023-08-30 07:56:03,126 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2023-08-30 07:56:03,127 INFO L138 SettingsManager]: * sizeof long=4
[2023-08-30 07:56:03,127 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false
[2023-08-30 07:56:03,127 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true
[2023-08-30 07:56:03,128 INFO L138 SettingsManager]: * sizeof POINTER=4
[2023-08-30 07:56:03,128 INFO L138 SettingsManager]: * Check division by zero=IGNORE
[2023-08-30 07:56:03,128 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true
[2023-08-30 07:56:03,128 INFO L138 SettingsManager]: * Bitprecise bitfields=true
[2023-08-30 07:56:03,128 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true
[2023-08-30 07:56:03,128 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2023-08-30 07:56:03,129 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true
[2023-08-30 07:56:03,129 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true
[2023-08-30 07:56:03,129 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution
[2023-08-30 07:56:03,129 INFO L138 SettingsManager]: * sizeof long double=12
[2023-08-30 07:56:03,129 INFO L138 SettingsManager]: * Use constant arrays=true
[2023-08-30 07:56:03,129 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2023-08-30 07:56:03,130 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements
[2023-08-30 07:56:03,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode
[2023-08-30 07:56:03,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-08-30 07:56:03,130 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2023-08-30 07:56:03,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2023-08-30 07:56:03,131 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF
[2023-08-30 07:56:03,131 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt
[2023-08-30 07:56:03,131 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET
[2023-08-30 07:56:03,131 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO
[2023-08-30 07:56:03,131 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2023-08-30 07:56:03,132 INFO L138 SettingsManager]: * Logic for external solver=AUFBV
[2023-08-30 07:56:03,132 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC
[2023-08-30 07:56:03,132 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int)
WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) )
CHECK( init(main()), LTL(G valid-deref) )
CHECK( init(main()), LTL(G valid-memtrack) )
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit
Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER
[2023-08-30 07:56:03,457 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp
[2023-08-30 07:56:03,484 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2023-08-30 07:56:03,487 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2023-08-30 07:56:03,488 INFO L271 PluginConnector]: Initializing CDTParser...
[2023-08-30 07:56:03,489 INFO L275 PluginConnector]: CDTParser initialized
[2023-08-30 07:56:03,490 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i
[2023-08-30 07:56:04,688 INFO L500 CDTParser]: Created temporary CDT project at NULL
[2023-08-30 07:56:05,035 INFO L351 CDTParser]: Found 1 translation units.
[2023-08-30 07:56:05,037 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i
[2023-08-30 07:56:05,059 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36fc63339/fb76c55164254f848a284ac0a0dbc7ca/FLAG38af3189c
[2023-08-30 07:56:05,079 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36fc63339/fb76c55164254f848a284ac0a0dbc7ca
[2023-08-30 07:56:05,082 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2023-08-30 07:56:05,083 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements.
[2023-08-30 07:56:05,085 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2023-08-30 07:56:05,086 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2023-08-30 07:56:05,088 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized
[2023-08-30 07:56:05,089 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:56:05" (1/1) ...
[2023-08-30 07:56:05,091 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e140302 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:56:05, skipping insertion in model container
[2023-08-30 07:56:05,091 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:56:05" (1/1) ...
[2023-08-30 07:56:05,097 INFO L145 MainTranslator]: Starting translation in SV-COMP mode
[2023-08-30 07:56:05,143 INFO L178 MainTranslator]: Built tables and reachable declarations
[2023-08-30 07:56:05,556 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i[39758,39771]
[2023-08-30 07:56:05,561 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-08-30 07:56:05,585 INFO L203 MainTranslator]: Completed pre-run
[2023-08-30 07:56:05,643 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-deagle/arithmetic_prog_bad.i[39758,39771]
[2023-08-30 07:56:05,643 INFO L209 PostProcessor]: Analyzing one entry point: main
[2023-08-30 07:56:05,714 INFO L208 MainTranslator]: Completed translation
[2023-08-30 07:56:05,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:56:05 WrapperNode
[2023-08-30 07:56:05,714 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2023-08-30 07:56:05,715 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2023-08-30 07:56:05,715 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2023-08-30 07:56:05,715 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized
[2023-08-30 07:56:05,721 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:56:05" (1/1) ...
[2023-08-30 07:56:05,748 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:56:05" (1/1) ...
[2023-08-30 07:56:05,774 INFO L138 Inliner]: procedures = 250, calls = 50, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 82
[2023-08-30 07:56:05,775 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2023-08-30 07:56:05,776 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2023-08-30 07:56:05,776 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2023-08-30 07:56:05,776 INFO L275 PluginConnector]: Boogie Preprocessor initialized
[2023-08-30 07:56:05,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:56:05" (1/1) ...
[2023-08-30 07:56:05,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:56:05" (1/1) ...
[2023-08-30 07:56:05,787 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:56:05" (1/1) ...
[2023-08-30 07:56:05,788 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:56:05" (1/1) ...
[2023-08-30 07:56:05,795 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:56:05" (1/1) ...
[2023-08-30 07:56:05,798 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:56:05" (1/1) ...
[2023-08-30 07:56:05,801 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:56:05" (1/1) ...
[2023-08-30 07:56:05,803 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:56:05" (1/1) ...
[2023-08-30 07:56:05,806 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2023-08-30 07:56:05,807 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2023-08-30 07:56:05,807 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2023-08-30 07:56:05,808 INFO L275 PluginConnector]: RCFGBuilder initialized
[2023-08-30 07:56:05,808 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:56:05" (1/1) ...
[2023-08-30 07:56:05,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2023-08-30 07:56:05,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
[2023-08-30 07:56:05,844 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
[2023-08-30 07:56:05,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process
[2023-08-30 07:56:05,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4
[2023-08-30 07:56:05,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack
[2023-08-30 07:56:05,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc
[2023-08-30 07:56:05,891 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4
[2023-08-30 07:56:05,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$
[2023-08-30 07:56:05,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE2
[2023-08-30 07:56:05,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1
[2023-08-30 07:56:05,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4
[2023-08-30 07:56:05,892 INFO L130 BoogieDeclarations]: Found specification of procedure thread1
[2023-08-30 07:56:05,892 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1
[2023-08-30 07:56:05,892 INFO L130 BoogieDeclarations]: Found specification of procedure thread2
[2023-08-30 07:56:05,893 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2
[2023-08-30 07:56:05,893 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock
[2023-08-30 07:56:05,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit
[2023-08-30 07:56:05,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2023-08-30 07:56:05,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2023-08-30 07:56:05,895 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement
[2023-08-30 07:56:06,071 INFO L236 CfgBuilder]: Building ICFG
[2023-08-30 07:56:06,073 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation
[2023-08-30 07:56:06,423 INFO L277 CfgBuilder]: Performing block encoding
[2023-08-30 07:56:06,431 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2023-08-30 07:56:06,431 INFO L302 CfgBuilder]: Removed 4 assume(true) statements.
[2023-08-30 07:56:06,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:56:06 BoogieIcfgContainer
[2023-08-30 07:56:06,433 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2023-08-30 07:56:06,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2023-08-30 07:56:06,435 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2023-08-30 07:56:06,438 INFO L275 PluginConnector]: TraceAbstraction initialized
[2023-08-30 07:56:06,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 07:56:05" (1/3) ...
[2023-08-30 07:56:06,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@699a6886 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:56:06, skipping insertion in model container
[2023-08-30 07:56:06,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:56:05" (2/3) ...
[2023-08-30 07:56:06,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@699a6886 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:56:06, skipping insertion in model container
[2023-08-30 07:56:06,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:56:06" (3/3) ...
[2023-08-30 07:56:06,441 INFO L112 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_bad.i
[2023-08-30 07:56:06,458 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2023-08-30 07:56:06,458 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations.
[2023-08-30 07:56:06,459 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances.
[2023-08-30 07:56:06,538 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions.
[2023-08-30 07:56:06,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 144 transitions, 304 flow
[2023-08-30 07:56:06,634 INFO L130 PetriNetUnfolder]: 10/142 cut-off events.
[2023-08-30 07:56:06,634 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES.
[2023-08-30 07:56:06,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 142 events. 10/142 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 181 event pairs, 0 based on Foata normal form. 0/122 useless extension candidates. Maximal degree in co-relation 88. Up to 3 conditions per place.
[2023-08-30 07:56:06,641 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 144 transitions, 304 flow
[2023-08-30 07:56:06,645 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 138 transitions, 288 flow
[2023-08-30 07:56:06,648 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation.
[2023-08-30 07:56:06,662 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 135 places, 138 transitions, 288 flow
[2023-08-30 07:56:06,665 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 135 places, 138 transitions, 288 flow
[2023-08-30 07:56:06,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 138 transitions, 288 flow
[2023-08-30 07:56:06,692 INFO L130 PetriNetUnfolder]: 10/138 cut-off events.
[2023-08-30 07:56:06,692 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES.
[2023-08-30 07:56:06,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 138 events. 10/138 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 181 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 88. Up to 3 conditions per place.
[2023-08-30 07:56:06,696 INFO L119 LiptonReduction]: Number of co-enabled transitions 2314
[2023-08-30 07:56:28,795 INFO L134 LiptonReduction]: Checked pairs total: 5425
[2023-08-30 07:56:28,796 INFO L136 LiptonReduction]: Total number of compositions: 131
[2023-08-30 07:56:28,809 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ========
[2023-08-30 07:56:28,815 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6ee389b1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=<UNSUPPORTED>, UseSemiCommutativity=<UNSUPPORTED>, Solver=<NOT_USED>, SolverTimeout=<NOT_USED>]
[2023-08-30 07:56:28,815 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations.
[2023-08-30 07:56:28,817 INFO L130 PetriNetUnfolder]: 0/0 cut-off events.
[2023-08-30 07:56:28,817 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES.
[2023-08-30 07:56:28,817 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 07:56:28,818 INFO L208 CegarLoopForPetriNet]: trace histogram [1]
[2023-08-30 07:56:28,818 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] ===
[2023-08-30 07:56:28,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 07:56:28,823 INFO L85 PathProgramCache]: Analyzing trace with hash 546, now seen corresponding path program 1 times
[2023-08-30 07:56:28,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-08-30 07:56:28,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [385279046]
[2023-08-30 07:56:28,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 07:56:28,835 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 07:56:28,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-08-30 07:56:28,841 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-08-30 07:56:28,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process
[2023-08-30 07:56:28,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 07:56:28,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 3 conjuncts, 1 conjunts are in the unsatisfiable core
[2023-08-30 07:56:28,935 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-30 07:56:28,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 07:56:28,939 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-08-30 07:56:28,940 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-08-30 07:56:28,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [385279046]
[2023-08-30 07:56:28,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [385279046] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 07:56:28,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 07:56:28,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0
[2023-08-30 07:56:28,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637555182]
[2023-08-30 07:56:28,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 07:56:28,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states
[2023-08-30 07:56:28,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-08-30 07:56:28,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants.
[2023-08-30 07:56:28,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2
[2023-08-30 07:56:28,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 275
[2023-08-30 07:56:28,987 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 40 transitions, 92 flow. Second operand has 2 states, 2 states have (on average 134.5) internal successors, (269), 2 states have internal predecessors, (269), 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)
[2023-08-30 07:56:28,987 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 07:56:28,987 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 275
[2023-08-30 07:56:28,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 07:56:29,197 INFO L130 PetriNetUnfolder]: 264/513 cut-off events.
[2023-08-30 07:56:29,198 INFO L131 PetriNetUnfolder]: For 18/18 co-relation queries the response was YES.
[2023-08-30 07:56:29,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 943 conditions, 513 events. 264/513 cut-off events. For 18/18 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2442 event pairs, 168 based on Foata normal form. 24/383 useless extension candidates. Maximal degree in co-relation 833. Up to 409 conditions per place.
[2023-08-30 07:56:29,203 INFO L137 encePairwiseOnDemand]: 272/275 looper letters, 28 selfloop transitions, 0 changer transitions 0/37 dead transitions.
[2023-08-30 07:56:29,204 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 37 transitions, 142 flow
[2023-08-30 07:56:29,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states.
[2023-08-30 07:56:29,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states.
[2023-08-30 07:56:29,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 299 transitions.
[2023-08-30 07:56:29,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5436363636363636
[2023-08-30 07:56:29,226 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 299 transitions.
[2023-08-30 07:56:29,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 299 transitions.
[2023-08-30 07:56:29,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 07:56:29,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 299 transitions.
[2023-08-30 07:56:29,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 149.5) internal successors, (299), 2 states have internal predecessors, (299), 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)
[2023-08-30 07:56:29,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 275.0) internal successors, (825), 3 states have internal predecessors, (825), 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)
[2023-08-30 07:56:29,244 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 275.0) internal successors, (825), 3 states have internal predecessors, (825), 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)
[2023-08-30 07:56:29,246 INFO L175 Difference]: Start difference. First operand has 42 places, 40 transitions, 92 flow. Second operand 2 states and 299 transitions.
[2023-08-30 07:56:29,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 37 transitions, 142 flow
[2023-08-30 07:56:29,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 37 transitions, 134 flow, removed 0 selfloop flow, removed 4 redundant places.
[2023-08-30 07:56:29,254 INFO L231 Difference]: Finished difference. Result has 37 places, 37 transitions, 78 flow
[2023-08-30 07:56:29,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=78, PETRI_PLACES=37, PETRI_TRANSITIONS=37}
[2023-08-30 07:56:29,262 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -5 predicate places.
[2023-08-30 07:56:29,263 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 37 transitions, 78 flow
[2023-08-30 07:56:29,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 134.5) internal successors, (269), 2 states have internal predecessors, (269), 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)
[2023-08-30 07:56:29,264 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 07:56:29,264 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1]
[2023-08-30 07:56:29,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0
[2023-08-30 07:56:29,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 07:56:29,474 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] ===
[2023-08-30 07:56:29,475 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 07:56:29,475 INFO L85 PathProgramCache]: Analyzing trace with hash 538029, now seen corresponding path program 1 times
[2023-08-30 07:56:29,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-08-30 07:56:29,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1944668603]
[2023-08-30 07:56:29,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 07:56:29,480 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 07:56:29,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-08-30 07:56:29,481 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-08-30 07:56:29,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process
[2023-08-30 07:56:29,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 07:56:29,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-08-30 07:56:29,576 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-30 07:56:29,644 INFO L321 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size
[2023-08-30 07:56:29,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 19
[2023-08-30 07:56:29,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 07:56:29,662 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-08-30 07:56:29,663 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-08-30 07:56:29,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1944668603]
[2023-08-30 07:56:29,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1944668603] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 07:56:29,664 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 07:56:29,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-08-30 07:56:29,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601316605]
[2023-08-30 07:56:29,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 07:56:29,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-08-30 07:56:29,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-08-30 07:56:29,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-08-30 07:56:29,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-08-30 07:56:29,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 275
[2023-08-30 07:56:29,749 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 37 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 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)
[2023-08-30 07:56:29,750 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 07:56:29,750 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 275
[2023-08-30 07:56:29,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 07:56:29,933 INFO L130 PetriNetUnfolder]: 252/486 cut-off events.
[2023-08-30 07:56:29,934 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES.
[2023-08-30 07:56:29,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 881 conditions, 486 events. 252/486 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2283 event pairs, 160 based on Foata normal form. 0/346 useless extension candidates. Maximal degree in co-relation 878. Up to 385 conditions per place.
[2023-08-30 07:56:29,940 INFO L137 encePairwiseOnDemand]: 271/275 looper letters, 24 selfloop transitions, 2 changer transitions 0/35 dead transitions.
[2023-08-30 07:56:29,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 35 transitions, 126 flow
[2023-08-30 07:56:29,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-30 07:56:29,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-30 07:56:29,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 403 transitions.
[2023-08-30 07:56:29,946 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48848484848484847
[2023-08-30 07:56:29,946 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 403 transitions.
[2023-08-30 07:56:29,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 403 transitions.
[2023-08-30 07:56:29,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 07:56:29,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 403 transitions.
[2023-08-30 07:56:29,948 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 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)
[2023-08-30 07:56:29,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 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)
[2023-08-30 07:56:29,953 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 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)
[2023-08-30 07:56:29,953 INFO L175 Difference]: Start difference. First operand has 37 places, 37 transitions, 78 flow. Second operand 3 states and 403 transitions.
[2023-08-30 07:56:29,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 35 transitions, 126 flow
[2023-08-30 07:56:29,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 35 transitions, 126 flow, removed 0 selfloop flow, removed 0 redundant places.
[2023-08-30 07:56:29,954 INFO L231 Difference]: Finished difference. Result has 37 places, 35 transitions, 78 flow
[2023-08-30 07:56:29,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=37, PETRI_TRANSITIONS=35}
[2023-08-30 07:56:29,956 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -5 predicate places.
[2023-08-30 07:56:29,956 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 35 transitions, 78 flow
[2023-08-30 07:56:29,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 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)
[2023-08-30 07:56:29,957 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 07:56:29,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1]
[2023-08-30 07:56:29,969 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0
[2023-08-30 07:56:30,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 07:56:30,167 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] ===
[2023-08-30 07:56:30,167 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 07:56:30,168 INFO L85 PathProgramCache]: Analyzing trace with hash 538028, now seen corresponding path program 1 times
[2023-08-30 07:56:30,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-08-30 07:56:30,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [573629220]
[2023-08-30 07:56:30,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 07:56:30,169 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 07:56:30,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-08-30 07:56:30,170 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-08-30 07:56:30,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process
[2023-08-30 07:56:30,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 07:56:30,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-08-30 07:56:30,268 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-30 07:56:30,292 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size
[2023-08-30 07:56:30,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15
[2023-08-30 07:56:30,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 07:56:30,311 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-08-30 07:56:30,311 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-08-30 07:56:30,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [573629220]
[2023-08-30 07:56:30,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [573629220] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 07:56:30,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 07:56:30,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-08-30 07:56:30,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633466996]
[2023-08-30 07:56:30,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 07:56:30,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-08-30 07:56:30,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-08-30 07:56:30,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-08-30 07:56:30,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-08-30 07:56:30,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 275
[2023-08-30 07:56:30,382 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 35 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 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)
[2023-08-30 07:56:30,382 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 07:56:30,382 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 275
[2023-08-30 07:56:30,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 07:56:30,493 INFO L130 PetriNetUnfolder]: 240/459 cut-off events.
[2023-08-30 07:56:30,494 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES.
[2023-08-30 07:56:30,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 835 conditions, 459 events. 240/459 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2096 event pairs, 152 based on Foata normal form. 0/334 useless extension candidates. Maximal degree in co-relation 831. Up to 363 conditions per place.
[2023-08-30 07:56:30,497 INFO L137 encePairwiseOnDemand]: 271/275 looper letters, 22 selfloop transitions, 2 changer transitions 0/33 dead transitions.
[2023-08-30 07:56:30,497 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 33 transitions, 122 flow
[2023-08-30 07:56:30,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-30 07:56:30,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-30 07:56:30,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 413 transitions.
[2023-08-30 07:56:30,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5006060606060606
[2023-08-30 07:56:30,499 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 413 transitions.
[2023-08-30 07:56:30,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 413 transitions.
[2023-08-30 07:56:30,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 07:56:30,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 413 transitions.
[2023-08-30 07:56:30,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 137.66666666666666) internal successors, (413), 3 states have internal predecessors, (413), 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)
[2023-08-30 07:56:30,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 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)
[2023-08-30 07:56:30,503 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 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)
[2023-08-30 07:56:30,503 INFO L175 Difference]: Start difference. First operand has 37 places, 35 transitions, 78 flow. Second operand 3 states and 413 transitions.
[2023-08-30 07:56:30,503 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 33 transitions, 122 flow
[2023-08-30 07:56:30,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 33 transitions, 118 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-08-30 07:56:30,504 INFO L231 Difference]: Finished difference. Result has 35 places, 33 transitions, 74 flow
[2023-08-30 07:56:30,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=74, PETRI_PLACES=35, PETRI_TRANSITIONS=33}
[2023-08-30 07:56:30,505 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -7 predicate places.
[2023-08-30 07:56:30,506 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 33 transitions, 74 flow
[2023-08-30 07:56:30,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 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)
[2023-08-30 07:56:30,506 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 07:56:30,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1]
[2023-08-30 07:56:30,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0
[2023-08-30 07:56:30,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 07:56:30,717 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] ===
[2023-08-30 07:56:30,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 07:56:30,717 INFO L85 PathProgramCache]: Analyzing trace with hash 517059102, now seen corresponding path program 1 times
[2023-08-30 07:56:30,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-08-30 07:56:30,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [407015943]
[2023-08-30 07:56:30,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 07:56:30,719 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 07:56:30,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-08-30 07:56:30,724 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-08-30 07:56:30,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process
[2023-08-30 07:56:30,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 07:56:30,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-08-30 07:56:30,826 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-30 07:56:30,842 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size
[2023-08-30 07:56:30,842 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15
[2023-08-30 07:56:30,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 07:56:30,867 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-08-30 07:56:30,868 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-08-30 07:56:30,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [407015943]
[2023-08-30 07:56:30,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [407015943] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 07:56:30,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 07:56:30,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-08-30 07:56:30,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133973182]
[2023-08-30 07:56:30,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 07:56:30,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-08-30 07:56:30,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-08-30 07:56:30,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-08-30 07:56:30,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-08-30 07:56:30,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 275
[2023-08-30 07:56:30,939 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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)
[2023-08-30 07:56:30,939 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 07:56:30,939 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 275
[2023-08-30 07:56:30,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 07:56:31,030 INFO L130 PetriNetUnfolder]: 180/354 cut-off events.
[2023-08-30 07:56:31,031 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES.
[2023-08-30 07:56:31,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 645 conditions, 354 events. 180/354 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1532 event pairs, 112 based on Foata normal form. 0/270 useless extension candidates. Maximal degree in co-relation 641. Up to 278 conditions per place.
[2023-08-30 07:56:31,033 INFO L137 encePairwiseOnDemand]: 272/275 looper letters, 21 selfloop transitions, 2 changer transitions 0/32 dead transitions.
[2023-08-30 07:56:31,033 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 32 transitions, 118 flow
[2023-08-30 07:56:31,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-30 07:56:31,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-30 07:56:31,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 399 transitions.
[2023-08-30 07:56:31,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48363636363636364
[2023-08-30 07:56:31,035 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 399 transitions.
[2023-08-30 07:56:31,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 399 transitions.
[2023-08-30 07:56:31,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 07:56:31,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 399 transitions.
[2023-08-30 07:56:31,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 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)
[2023-08-30 07:56:31,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 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)
[2023-08-30 07:56:31,039 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 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)
[2023-08-30 07:56:31,039 INFO L175 Difference]: Start difference. First operand has 35 places, 33 transitions, 74 flow. Second operand 3 states and 399 transitions.
[2023-08-30 07:56:31,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 32 transitions, 118 flow
[2023-08-30 07:56:31,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 32 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-08-30 07:56:31,041 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 72 flow
[2023-08-30 07:56:31,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=34, PETRI_TRANSITIONS=32}
[2023-08-30 07:56:31,042 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -8 predicate places.
[2023-08-30 07:56:31,042 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 72 flow
[2023-08-30 07:56:31,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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)
[2023-08-30 07:56:31,042 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 07:56:31,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1]
[2023-08-30 07:56:31,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0
[2023-08-30 07:56:31,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 07:56:31,253 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] ===
[2023-08-30 07:56:31,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 07:56:31,254 INFO L85 PathProgramCache]: Analyzing trace with hash 517059103, now seen corresponding path program 1 times
[2023-08-30 07:56:31,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-08-30 07:56:31,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [133131497]
[2023-08-30 07:56:31,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 07:56:31,255 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 07:56:31,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-08-30 07:56:31,256 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-08-30 07:56:31,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process
[2023-08-30 07:56:31,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 07:56:31,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core
[2023-08-30 07:56:31,351 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-30 07:56:31,369 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size
[2023-08-30 07:56:31,370 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11
[2023-08-30 07:56:31,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 07:56:31,412 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-08-30 07:56:31,412 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-08-30 07:56:31,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [133131497]
[2023-08-30 07:56:31,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [133131497] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 07:56:31,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 07:56:31,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-08-30 07:56:31,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383579]
[2023-08-30 07:56:31,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 07:56:31,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-08-30 07:56:31,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-08-30 07:56:31,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-08-30 07:56:31,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-08-30 07:56:31,488 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 275
[2023-08-30 07:56:31,489 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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)
[2023-08-30 07:56:31,489 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 07:56:31,489 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 275
[2023-08-30 07:56:31,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 07:56:31,578 INFO L130 PetriNetUnfolder]: 120/249 cut-off events.
[2023-08-30 07:56:31,578 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES.
[2023-08-30 07:56:31,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 249 events. 120/249 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 996 event pairs, 72 based on Foata normal form. 0/206 useless extension candidates. Maximal degree in co-relation 451. Up to 193 conditions per place.
[2023-08-30 07:56:31,579 INFO L137 encePairwiseOnDemand]: 272/275 looper letters, 20 selfloop transitions, 2 changer transitions 0/31 dead transitions.
[2023-08-30 07:56:31,580 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 31 transitions, 114 flow
[2023-08-30 07:56:31,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-30 07:56:31,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-30 07:56:31,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 410 transitions.
[2023-08-30 07:56:31,582 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49696969696969695
[2023-08-30 07:56:31,582 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 410 transitions.
[2023-08-30 07:56:31,582 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 410 transitions.
[2023-08-30 07:56:31,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 07:56:31,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 410 transitions.
[2023-08-30 07:56:31,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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)
[2023-08-30 07:56:31,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 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)
[2023-08-30 07:56:31,585 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 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)
[2023-08-30 07:56:31,586 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 72 flow. Second operand 3 states and 410 transitions.
[2023-08-30 07:56:31,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 31 transitions, 114 flow
[2023-08-30 07:56:31,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 31 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-08-30 07:56:31,587 INFO L231 Difference]: Finished difference. Result has 33 places, 31 transitions, 70 flow
[2023-08-30 07:56:31,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=33, PETRI_TRANSITIONS=31}
[2023-08-30 07:56:31,588 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -9 predicate places.
[2023-08-30 07:56:31,588 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 31 transitions, 70 flow
[2023-08-30 07:56:31,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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)
[2023-08-30 07:56:31,589 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 07:56:31,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 07:56:31,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0
[2023-08-30 07:56:31,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 07:56:31,799 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] ===
[2023-08-30 07:56:31,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 07:56:31,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1060858756, now seen corresponding path program 1 times
[2023-08-30 07:56:31,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-08-30 07:56:31,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1510560623]
[2023-08-30 07:56:31,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 07:56:31,801 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 07:56:31,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-08-30 07:56:31,806 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-08-30 07:56:31,808 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process
[2023-08-30 07:56:31,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 07:56:31,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 2 conjunts are in the unsatisfiable core
[2023-08-30 07:56:31,911 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-30 07:56:31,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 07:56:31,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-08-30 07:56:31,929 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-08-30 07:56:31,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1510560623]
[2023-08-30 07:56:31,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1510560623] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 07:56:31,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 07:56:31,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-08-30 07:56:31,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520693930]
[2023-08-30 07:56:31,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 07:56:31,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-08-30 07:56:31,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-08-30 07:56:31,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-08-30 07:56:31,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-08-30 07:56:31,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 275
[2023-08-30 07:56:31,947 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 31 transitions, 70 flow. Second operand has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 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)
[2023-08-30 07:56:31,948 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 07:56:31,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 275
[2023-08-30 07:56:31,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 07:56:32,084 INFO L130 PetriNetUnfolder]: 189/435 cut-off events.
[2023-08-30 07:56:32,084 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES.
[2023-08-30 07:56:32,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 749 conditions, 435 events. 189/435 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2015 event pairs, 72 based on Foata normal form. 0/369 useless extension candidates. Maximal degree in co-relation 745. Up to 195 conditions per place.
[2023-08-30 07:56:32,087 INFO L137 encePairwiseOnDemand]: 272/275 looper letters, 33 selfloop transitions, 2 changer transitions 0/44 dead transitions.
[2023-08-30 07:56:32,087 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 44 transitions, 167 flow
[2023-08-30 07:56:32,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-30 07:56:32,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-30 07:56:32,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 426 transitions.
[2023-08-30 07:56:32,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163636363636364
[2023-08-30 07:56:32,089 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 426 transitions.
[2023-08-30 07:56:32,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 426 transitions.
[2023-08-30 07:56:32,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 07:56:32,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 426 transitions.
[2023-08-30 07:56:32,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 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)
[2023-08-30 07:56:32,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 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)
[2023-08-30 07:56:32,093 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 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)
[2023-08-30 07:56:32,093 INFO L175 Difference]: Start difference. First operand has 33 places, 31 transitions, 70 flow. Second operand 3 states and 426 transitions.
[2023-08-30 07:56:32,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 44 transitions, 167 flow
[2023-08-30 07:56:32,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 44 transitions, 163 flow, removed 0 selfloop flow, removed 2 redundant places.
[2023-08-30 07:56:32,095 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 78 flow
[2023-08-30 07:56:32,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=34, PETRI_TRANSITIONS=32}
[2023-08-30 07:56:32,097 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -8 predicate places.
[2023-08-30 07:56:32,097 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 78 flow
[2023-08-30 07:56:32,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 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)
[2023-08-30 07:56:32,098 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 07:56:32,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 07:56:32,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0
[2023-08-30 07:56:32,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 07:56:32,308 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] ===
[2023-08-30 07:56:32,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 07:56:32,309 INFO L85 PathProgramCache]: Analyzing trace with hash -791743015, now seen corresponding path program 1 times
[2023-08-30 07:56:32,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-08-30 07:56:32,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1072784188]
[2023-08-30 07:56:32,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 07:56:32,310 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 07:56:32,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-08-30 07:56:32,315 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-08-30 07:56:32,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process
[2023-08-30 07:56:32,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 07:56:32,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 2 conjunts are in the unsatisfiable core
[2023-08-30 07:56:32,413 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-30 07:56:32,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 07:56:32,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-08-30 07:56:32,430 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-08-30 07:56:32,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1072784188]
[2023-08-30 07:56:32,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1072784188] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 07:56:32,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 07:56:32,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-08-30 07:56:32,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572475555]
[2023-08-30 07:56:32,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 07:56:32,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-08-30 07:56:32,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-08-30 07:56:32,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-08-30 07:56:32,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-08-30 07:56:32,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 275
[2023-08-30 07:56:32,446 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 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)
[2023-08-30 07:56:32,446 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 07:56:32,446 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 275
[2023-08-30 07:56:32,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 07:56:32,596 INFO L130 PetriNetUnfolder]: 297/642 cut-off events.
[2023-08-30 07:56:32,596 INFO L131 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES.
[2023-08-30 07:56:32,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1207 conditions, 642 events. 297/642 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 3088 event pairs, 117 based on Foata normal form. 0/588 useless extension candidates. Maximal degree in co-relation 1202. Up to 300 conditions per place.
[2023-08-30 07:56:32,602 INFO L137 encePairwiseOnDemand]: 272/275 looper letters, 35 selfloop transitions, 2 changer transitions 0/46 dead transitions.
[2023-08-30 07:56:32,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 46 transitions, 191 flow
[2023-08-30 07:56:32,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-30 07:56:32,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-30 07:56:32,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 426 transitions.
[2023-08-30 07:56:32,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5163636363636364
[2023-08-30 07:56:32,605 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 426 transitions.
[2023-08-30 07:56:32,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 426 transitions.
[2023-08-30 07:56:32,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 07:56:32,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 426 transitions.
[2023-08-30 07:56:32,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 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)
[2023-08-30 07:56:32,610 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 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)
[2023-08-30 07:56:32,610 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 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)
[2023-08-30 07:56:32,610 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 78 flow. Second operand 3 states and 426 transitions.
[2023-08-30 07:56:32,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 46 transitions, 191 flow
[2023-08-30 07:56:32,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 46 transitions, 187 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-08-30 07:56:32,612 INFO L231 Difference]: Finished difference. Result has 36 places, 33 transitions, 88 flow
[2023-08-30 07:56:32,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=36, PETRI_TRANSITIONS=33}
[2023-08-30 07:56:32,613 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -6 predicate places.
[2023-08-30 07:56:32,613 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 33 transitions, 88 flow
[2023-08-30 07:56:32,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 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)
[2023-08-30 07:56:32,615 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 07:56:32,615 INFO L208 CegarLoopForPetriNet]: 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]
[2023-08-30 07:56:32,629 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0
[2023-08-30 07:56:32,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 07:56:32,830 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] ===
[2023-08-30 07:56:32,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 07:56:32,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1472421019, now seen corresponding path program 1 times
[2023-08-30 07:56:32,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-08-30 07:56:32,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1603441697]
[2023-08-30 07:56:32,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 07:56:32,831 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 07:56:32,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-08-30 07:56:32,832 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-08-30 07:56:32,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process
[2023-08-30 07:56:32,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 07:56:32,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 3 conjunts are in the unsatisfiable core
[2023-08-30 07:56:32,949 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-30 07:56:32,983 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 07:56:32,984 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2023-08-30 07:56:33,033 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 07:56:33,033 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-08-30 07:56:33,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1603441697]
[2023-08-30 07:56:33,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1603441697] provided 0 perfect and 2 imperfect interpolant sequences
[2023-08-30 07:56:33,034 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-08-30 07:56:33,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6
[2023-08-30 07:56:33,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622934365]
[2023-08-30 07:56:33,034 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-08-30 07:56:33,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states
[2023-08-30 07:56:33,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-08-30 07:56:33,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2023-08-30 07:56:33,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2023-08-30 07:56:33,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 275
[2023-08-30 07:56:33,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 33 transitions, 88 flow. Second operand has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 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)
[2023-08-30 07:56:33,053 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 07:56:33,053 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 275
[2023-08-30 07:56:33,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 07:56:33,347 INFO L130 PetriNetUnfolder]: 435/973 cut-off events.
[2023-08-30 07:56:33,347 INFO L131 PetriNetUnfolder]: For 181/181 co-relation queries the response was YES.
[2023-08-30 07:56:33,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1883 conditions, 973 events. 435/973 cut-off events. For 181/181 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4753 event pairs, 69 based on Foata normal form. 36/938 useless extension candidates. Maximal degree in co-relation 1877. Up to 180 conditions per place.
[2023-08-30 07:56:33,352 INFO L137 encePairwiseOnDemand]: 271/275 looper letters, 57 selfloop transitions, 5 changer transitions 0/71 dead transitions.
[2023-08-30 07:56:33,352 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 71 transitions, 323 flow
[2023-08-30 07:56:33,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2023-08-30 07:56:33,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states.
[2023-08-30 07:56:33,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 705 transitions.
[2023-08-30 07:56:33,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5127272727272727
[2023-08-30 07:56:33,355 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 705 transitions.
[2023-08-30 07:56:33,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 705 transitions.
[2023-08-30 07:56:33,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 07:56:33,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 705 transitions.
[2023-08-30 07:56:33,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 141.0) internal successors, (705), 5 states have internal predecessors, (705), 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)
[2023-08-30 07:56:33,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 275.0) internal successors, (1650), 6 states have internal predecessors, (1650), 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)
[2023-08-30 07:56:33,360 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 275.0) internal successors, (1650), 6 states have internal predecessors, (1650), 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)
[2023-08-30 07:56:33,360 INFO L175 Difference]: Start difference. First operand has 36 places, 33 transitions, 88 flow. Second operand 5 states and 705 transitions.
[2023-08-30 07:56:33,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 71 transitions, 323 flow
[2023-08-30 07:56:33,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 71 transitions, 315 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-08-30 07:56:33,362 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 116 flow
[2023-08-30 07:56:33,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=116, PETRI_PLACES=42, PETRI_TRANSITIONS=35}
[2023-08-30 07:56:33,363 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places.
[2023-08-30 07:56:33,363 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 116 flow
[2023-08-30 07:56:33,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 134.0) internal successors, (804), 6 states have internal predecessors, (804), 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)
[2023-08-30 07:56:33,364 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 07:56:33,364 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 07:56:33,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0
[2023-08-30 07:56:33,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 07:56:33,575 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] ===
[2023-08-30 07:56:33,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 07:56:33,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1197724531, now seen corresponding path program 1 times
[2023-08-30 07:56:33,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-08-30 07:56:33,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [40952382]
[2023-08-30 07:56:33,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2023-08-30 07:56:33,576 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 07:56:33,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-08-30 07:56:33,577 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-08-30 07:56:33,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process
[2023-08-30 07:56:33,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2023-08-30 07:56:33,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-08-30 07:56:33,684 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-30 07:56:33,712 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2023-08-30 07:56:33,713 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2023-08-30 07:56:33,761 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2023-08-30 07:56:33,762 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-08-30 07:56:33,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [40952382]
[2023-08-30 07:56:33,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [40952382] provided 0 perfect and 2 imperfect interpolant sequences
[2023-08-30 07:56:33,762 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-08-30 07:56:33,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7
[2023-08-30 07:56:33,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866905674]
[2023-08-30 07:56:33,763 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-08-30 07:56:33,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-08-30 07:56:33,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-08-30 07:56:33,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-08-30 07:56:33,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56
[2023-08-30 07:56:33,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 275
[2023-08-30 07:56:33,797 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 116 flow. Second operand has 8 states, 8 states have (on average 129.375) internal successors, (1035), 8 states have internal predecessors, (1035), 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)
[2023-08-30 07:56:33,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 07:56:33,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 275
[2023-08-30 07:56:33,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 07:56:34,240 INFO L130 PetriNetUnfolder]: 920/1616 cut-off events.
[2023-08-30 07:56:34,240 INFO L131 PetriNetUnfolder]: For 512/512 co-relation queries the response was YES.
[2023-08-30 07:56:34,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3717 conditions, 1616 events. 920/1616 cut-off events. For 512/512 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 6959 event pairs, 213 based on Foata normal form. 0/1543 useless extension candidates. Maximal degree in co-relation 3709. Up to 659 conditions per place.
[2023-08-30 07:56:34,248 INFO L137 encePairwiseOnDemand]: 266/275 looper letters, 87 selfloop transitions, 13 changer transitions 4/107 dead transitions.
[2023-08-30 07:56:34,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 107 transitions, 549 flow
[2023-08-30 07:56:34,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2023-08-30 07:56:34,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2023-08-30 07:56:34,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1092 transitions.
[2023-08-30 07:56:34,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49636363636363634
[2023-08-30 07:56:34,252 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1092 transitions.
[2023-08-30 07:56:34,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1092 transitions.
[2023-08-30 07:56:34,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 07:56:34,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1092 transitions.
[2023-08-30 07:56:34,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 136.5) internal successors, (1092), 8 states have internal predecessors, (1092), 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)
[2023-08-30 07:56:34,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 275.0) internal successors, (2475), 9 states have internal predecessors, (2475), 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)
[2023-08-30 07:56:34,259 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 275.0) internal successors, (2475), 9 states have internal predecessors, (2475), 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)
[2023-08-30 07:56:34,259 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 116 flow. Second operand 8 states and 1092 transitions.
[2023-08-30 07:56:34,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 107 transitions, 549 flow
[2023-08-30 07:56:34,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 107 transitions, 533 flow, removed 6 selfloop flow, removed 1 redundant places.
[2023-08-30 07:56:34,267 INFO L231 Difference]: Finished difference. Result has 55 places, 49 transitions, 224 flow
[2023-08-30 07:56:34,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=224, PETRI_PLACES=55, PETRI_TRANSITIONS=49}
[2023-08-30 07:56:34,268 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 13 predicate places.
[2023-08-30 07:56:34,269 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 49 transitions, 224 flow
[2023-08-30 07:56:34,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 129.375) internal successors, (1035), 8 states have internal predecessors, (1035), 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)
[2023-08-30 07:56:34,269 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 07:56:34,269 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 07:56:34,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0
[2023-08-30 07:56:34,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 07:56:34,480 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] ===
[2023-08-30 07:56:34,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 07:56:34,480 INFO L85 PathProgramCache]: Analyzing trace with hash 373370299, now seen corresponding path program 2 times
[2023-08-30 07:56:34,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-08-30 07:56:34,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [26545704]
[2023-08-30 07:56:34,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2023-08-30 07:56:34,481 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 07:56:34,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-08-30 07:56:34,483 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-08-30 07:56:34,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process
[2023-08-30 07:56:34,616 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2023-08-30 07:56:34,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-08-30 07:56:34,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-08-30 07:56:34,624 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-30 07:56:34,629 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9
[2023-08-30 07:56:34,642 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked.
[2023-08-30 07:56:34,642 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-08-30 07:56:34,643 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-08-30 07:56:34,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [26545704]
[2023-08-30 07:56:34,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [26545704] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 07:56:34,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 07:56:34,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2023-08-30 07:56:34,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269689112]
[2023-08-30 07:56:34,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 07:56:34,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-08-30 07:56:34,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-08-30 07:56:34,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-08-30 07:56:34,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-08-30 07:56:34,680 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 275
[2023-08-30 07:56:34,682 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 49 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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)
[2023-08-30 07:56:34,682 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 07:56:34,682 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 275
[2023-08-30 07:56:34,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 07:56:34,840 INFO L130 PetriNetUnfolder]: 339/787 cut-off events.
[2023-08-30 07:56:34,840 INFO L131 PetriNetUnfolder]: For 773/773 co-relation queries the response was YES.
[2023-08-30 07:56:34,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2197 conditions, 787 events. 339/787 cut-off events. For 773/773 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3528 event pairs, 99 based on Foata normal form. 82/868 useless extension candidates. Maximal degree in co-relation 2182. Up to 326 conditions per place.
[2023-08-30 07:56:34,846 INFO L137 encePairwiseOnDemand]: 267/275 looper letters, 30 selfloop transitions, 11 changer transitions 0/54 dead transitions.
[2023-08-30 07:56:34,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 54 transitions, 320 flow
[2023-08-30 07:56:34,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-30 07:56:34,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-30 07:56:34,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 410 transitions.
[2023-08-30 07:56:34,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49696969696969695
[2023-08-30 07:56:34,848 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 410 transitions.
[2023-08-30 07:56:34,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 410 transitions.
[2023-08-30 07:56:34,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 07:56:34,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 410 transitions.
[2023-08-30 07:56:34,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 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)
[2023-08-30 07:56:34,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 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)
[2023-08-30 07:56:34,852 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 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)
[2023-08-30 07:56:34,852 INFO L175 Difference]: Start difference. First operand has 55 places, 49 transitions, 224 flow. Second operand 3 states and 410 transitions.
[2023-08-30 07:56:34,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 54 transitions, 320 flow
[2023-08-30 07:56:34,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 54 transitions, 310 flow, removed 3 selfloop flow, removed 3 redundant places.
[2023-08-30 07:56:34,863 INFO L231 Difference]: Finished difference. Result has 53 places, 42 transitions, 198 flow
[2023-08-30 07:56:34,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=53, PETRI_TRANSITIONS=42}
[2023-08-30 07:56:34,864 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places.
[2023-08-30 07:56:34,864 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 42 transitions, 198 flow
[2023-08-30 07:56:34,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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)
[2023-08-30 07:56:34,865 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 07:56:34,865 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 07:56:34,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0
[2023-08-30 07:56:35,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 07:56:35,076 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] ===
[2023-08-30 07:56:35,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 07:56:35,077 INFO L85 PathProgramCache]: Analyzing trace with hash 918995859, now seen corresponding path program 2 times
[2023-08-30 07:56:35,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-08-30 07:56:35,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1911868880]
[2023-08-30 07:56:35,078 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1
[2023-08-30 07:56:35,078 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 07:56:35,078 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-08-30 07:56:35,079 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-08-30 07:56:35,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process
[2023-08-30 07:56:35,207 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s)
[2023-08-30 07:56:35,208 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-08-30 07:56:35,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 10 conjunts are in the unsatisfiable core
[2023-08-30 07:56:35,214 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-30 07:56:35,600 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked.
[2023-08-30 07:56:35,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect
[2023-08-30 07:56:35,601 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-08-30 07:56:35,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1911868880]
[2023-08-30 07:56:35,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1911868880] provided 1 perfect and 0 imperfect interpolant sequences
[2023-08-30 07:56:35,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences.
[2023-08-30 07:56:35,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2023-08-30 07:56:35,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262232210]
[2023-08-30 07:56:35,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton
[2023-08-30 07:56:35,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states
[2023-08-30 07:56:35,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-08-30 07:56:35,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2023-08-30 07:56:35,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2023-08-30 07:56:35,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 275
[2023-08-30 07:56:35,752 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 42 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 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)
[2023-08-30 07:56:35,752 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 07:56:35,752 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 275
[2023-08-30 07:56:35,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 07:56:35,869 INFO L130 PetriNetUnfolder]: 282/670 cut-off events.
[2023-08-30 07:56:35,869 INFO L131 PetriNetUnfolder]: For 563/573 co-relation queries the response was YES.
[2023-08-30 07:56:35,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1980 conditions, 670 events. 282/670 cut-off events. For 563/573 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2904 event pairs, 196 based on Foata normal form. 2/657 useless extension candidates. Maximal degree in co-relation 1967. Up to 487 conditions per place.
[2023-08-30 07:56:35,874 INFO L137 encePairwiseOnDemand]: 273/275 looper letters, 25 selfloop transitions, 1 changer transitions 0/41 dead transitions.
[2023-08-30 07:56:35,875 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 41 transitions, 248 flow
[2023-08-30 07:56:35,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2023-08-30 07:56:35,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states.
[2023-08-30 07:56:35,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 391 transitions.
[2023-08-30 07:56:35,877 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47393939393939394
[2023-08-30 07:56:35,877 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 391 transitions.
[2023-08-30 07:56:35,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 391 transitions.
[2023-08-30 07:56:35,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 07:56:35,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 391 transitions.
[2023-08-30 07:56:35,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 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)
[2023-08-30 07:56:35,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 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)
[2023-08-30 07:56:35,880 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 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)
[2023-08-30 07:56:35,880 INFO L175 Difference]: Start difference. First operand has 53 places, 42 transitions, 198 flow. Second operand 3 states and 391 transitions.
[2023-08-30 07:56:35,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 41 transitions, 248 flow
[2023-08-30 07:56:35,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 41 transitions, 237 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-08-30 07:56:35,883 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 187 flow
[2023-08-30 07:56:35,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=185, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=187, PETRI_PLACES=53, PETRI_TRANSITIONS=41}
[2023-08-30 07:56:35,884 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places.
[2023-08-30 07:56:35,884 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 187 flow
[2023-08-30 07:56:35,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 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)
[2023-08-30 07:56:35,885 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 07:56:35,885 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 07:56:35,897 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0
[2023-08-30 07:56:36,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 07:56:36,097 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] ===
[2023-08-30 07:56:36,098 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 07:56:36,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1316237347, now seen corresponding path program 3 times
[2023-08-30 07:56:36,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-08-30 07:56:36,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1640325033]
[2023-08-30 07:56:36,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2
[2023-08-30 07:56:36,099 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 07:56:36,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-08-30 07:56:36,100 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-08-30 07:56:36,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process
[2023-08-30 07:56:36,261 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2023-08-30 07:56:36,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-08-30 07:56:36,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 8 conjunts are in the unsatisfiable core
[2023-08-30 07:56:36,268 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-30 07:56:36,337 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2023-08-30 07:56:36,338 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2023-08-30 07:56:36,434 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2023-08-30 07:56:36,434 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-08-30 07:56:36,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1640325033]
[2023-08-30 07:56:36,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1640325033] provided 0 perfect and 2 imperfect interpolant sequences
[2023-08-30 07:56:36,435 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-08-30 07:56:36,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9
[2023-08-30 07:56:36,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123243848]
[2023-08-30 07:56:36,435 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-08-30 07:56:36,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states
[2023-08-30 07:56:36,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-08-30 07:56:36,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2023-08-30 07:56:36,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90
[2023-08-30 07:56:36,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 275
[2023-08-30 07:56:36,472 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 187 flow. Second operand has 10 states, 10 states have (on average 127.1) internal successors, (1271), 10 states have internal predecessors, (1271), 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)
[2023-08-30 07:56:36,472 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 07:56:36,472 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 275
[2023-08-30 07:56:36,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 07:56:36,973 INFO L130 PetriNetUnfolder]: 447/896 cut-off events.
[2023-08-30 07:56:36,974 INFO L131 PetriNetUnfolder]: For 776/776 co-relation queries the response was YES.
[2023-08-30 07:56:36,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2644 conditions, 896 events. 447/896 cut-off events. For 776/776 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3311 event pairs, 130 based on Foata normal form. 44/940 useless extension candidates. Maximal degree in co-relation 2630. Up to 349 conditions per place.
[2023-08-30 07:56:36,979 INFO L137 encePairwiseOnDemand]: 264/275 looper letters, 68 selfloop transitions, 13 changer transitions 0/83 dead transitions.
[2023-08-30 07:56:36,980 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 83 transitions, 517 flow
[2023-08-30 07:56:36,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2023-08-30 07:56:36,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2023-08-30 07:56:36,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1043 transitions.
[2023-08-30 07:56:36,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4740909090909091
[2023-08-30 07:56:36,983 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1043 transitions.
[2023-08-30 07:56:36,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1043 transitions.
[2023-08-30 07:56:36,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 07:56:36,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1043 transitions.
[2023-08-30 07:56:36,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 130.375) internal successors, (1043), 8 states have internal predecessors, (1043), 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)
[2023-08-30 07:56:36,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 275.0) internal successors, (2475), 9 states have internal predecessors, (2475), 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)
[2023-08-30 07:56:36,990 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 275.0) internal successors, (2475), 9 states have internal predecessors, (2475), 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)
[2023-08-30 07:56:36,991 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 187 flow. Second operand 8 states and 1043 transitions.
[2023-08-30 07:56:36,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 83 transitions, 517 flow
[2023-08-30 07:56:36,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 83 transitions, 516 flow, removed 0 selfloop flow, removed 1 redundant places.
[2023-08-30 07:56:36,994 INFO L231 Difference]: Finished difference. Result has 61 places, 41 transitions, 228 flow
[2023-08-30 07:56:36,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=228, PETRI_PLACES=61, PETRI_TRANSITIONS=41}
[2023-08-30 07:56:36,995 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 19 predicate places.
[2023-08-30 07:56:36,995 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 41 transitions, 228 flow
[2023-08-30 07:56:36,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 127.1) internal successors, (1271), 10 states have internal predecessors, (1271), 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)
[2023-08-30 07:56:36,996 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 07:56:36,996 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 07:56:37,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0
[2023-08-30 07:56:37,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 07:56:37,207 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] ===
[2023-08-30 07:56:37,208 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 07:56:37,208 INFO L85 PathProgramCache]: Analyzing trace with hash -84794677, now seen corresponding path program 4 times
[2023-08-30 07:56:37,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-08-30 07:56:37,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2128746941]
[2023-08-30 07:56:37,208 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST
[2023-08-30 07:56:37,209 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 07:56:37,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-08-30 07:56:37,210 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-08-30 07:56:37,213 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process
[2023-08-30 07:56:37,345 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2023-08-30 07:56:37,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat
[2023-08-30 07:56:37,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 4 conjunts are in the unsatisfiable core
[2023-08-30 07:56:37,352 INFO L286 TraceCheckSpWp]: Computing forward predicates...
[2023-08-30 07:56:37,412 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 07:56:37,412 INFO L328 TraceCheckSpWp]: Computing backward predicates...
[2023-08-30 07:56:37,486 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2023-08-30 07:56:37,486 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace
[2023-08-30 07:56:37,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2128746941]
[2023-08-30 07:56:37,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2128746941] provided 0 perfect and 2 imperfect interpolant sequences
[2023-08-30 07:56:37,486 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences.
[2023-08-30 07:56:37,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8
[2023-08-30 07:56:37,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937678932]
[2023-08-30 07:56:37,486 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton
[2023-08-30 07:56:37,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states
[2023-08-30 07:56:37,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF
[2023-08-30 07:56:37,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2023-08-30 07:56:37,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2023-08-30 07:56:37,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 275
[2023-08-30 07:56:37,532 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 41 transitions, 228 flow. Second operand has 8 states, 8 states have (on average 134.25) internal successors, (1074), 8 states have internal predecessors, (1074), 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)
[2023-08-30 07:56:37,533 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user.
[2023-08-30 07:56:37,533 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 275
[2023-08-30 07:56:37,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand
[2023-08-30 07:56:37,834 INFO L130 PetriNetUnfolder]: 370/926 cut-off events.
[2023-08-30 07:56:37,834 INFO L131 PetriNetUnfolder]: For 1062/1064 co-relation queries the response was YES.
[2023-08-30 07:56:37,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2883 conditions, 926 events. 370/926 cut-off events. For 1062/1064 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3866 event pairs, 93 based on Foata normal form. 38/960 useless extension candidates. Maximal degree in co-relation 2867. Up to 157 conditions per place.
[2023-08-30 07:56:37,840 INFO L137 encePairwiseOnDemand]: 271/275 looper letters, 62 selfloop transitions, 6 changer transitions 0/83 dead transitions.
[2023-08-30 07:56:37,840 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 83 transitions, 579 flow
[2023-08-30 07:56:37,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2023-08-30 07:56:37,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2023-08-30 07:56:37,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 836 transitions.
[2023-08-30 07:56:37,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5066666666666667
[2023-08-30 07:56:37,843 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 836 transitions.
[2023-08-30 07:56:37,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 836 transitions.
[2023-08-30 07:56:37,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic.
[2023-08-30 07:56:37,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 836 transitions.
[2023-08-30 07:56:37,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 139.33333333333334) internal successors, (836), 6 states have internal predecessors, (836), 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)
[2023-08-30 07:56:37,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 275.0) internal successors, (1925), 7 states have internal predecessors, (1925), 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)
[2023-08-30 07:56:37,848 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 275.0) internal successors, (1925), 7 states have internal predecessors, (1925), 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)
[2023-08-30 07:56:37,849 INFO L175 Difference]: Start difference. First operand has 61 places, 41 transitions, 228 flow. Second operand 6 states and 836 transitions.
[2023-08-30 07:56:37,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 83 transitions, 579 flow
[2023-08-30 07:56:37,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 83 transitions, 537 flow, removed 0 selfloop flow, removed 7 redundant places.
[2023-08-30 07:56:37,854 INFO L231 Difference]: Finished difference. Result has 62 places, 44 transitions, 243 flow
[2023-08-30 07:56:37,854 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=243, PETRI_PLACES=62, PETRI_TRANSITIONS=44}
[2023-08-30 07:56:37,855 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 20 predicate places.
[2023-08-30 07:56:37,855 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 44 transitions, 243 flow
[2023-08-30 07:56:37,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 134.25) internal successors, (1074), 8 states have internal predecessors, (1074), 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)
[2023-08-30 07:56:37,856 INFO L200 CegarLoopForPetriNet]: Found error trace
[2023-08-30 07:56:37,856 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 07:56:37,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0
[2023-08-30 07:56:38,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 07:56:38,067 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] ===
[2023-08-30 07:56:38,067 INFO L145 PredicateUnifier]: Initialized classic predicate unifier
[2023-08-30 07:56:38,067 INFO L85 PathProgramCache]: Analyzing trace with hash -202895433, now seen corresponding path program 5 times
[2023-08-30 07:56:38,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF
[2023-08-30 07:56:38,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1658134141]
[2023-08-30 07:56:38,068 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1
[2023-08-30 07:56:38,068 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 07:56:38,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat
[2023-08-30 07:56:38,069 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null)
[2023-08-30 07:56:38,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Waiting until timeout for monitored process
[2023-08-30 07:56:38,215 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s)
[2023-08-30 07:56:38,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat
[2023-08-30 07:56:38,215 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.
[2023-08-30 07:56:38,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat
[2023-08-30 07:56:38,369 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace
[2023-08-30 07:56:38,369 INFO L360 BasicCegarLoop]: Counterexample is feasible
[2023-08-30 07:56:38,370 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (11 of 12 remaining)
[2023-08-30 07:56:38,371 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining)
[2023-08-30 07:56:38,371 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining)
[2023-08-30 07:56:38,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining)
[2023-08-30 07:56:38,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining)
[2023-08-30 07:56:38,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining)
[2023-08-30 07:56:38,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining)
[2023-08-30 07:56:38,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining)
[2023-08-30 07:56:38,372 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 12 remaining)
[2023-08-30 07:56:38,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK (2 of 12 remaining)
[2023-08-30 07:56:38,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 12 remaining)
[2023-08-30 07:56:38,373 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 12 remaining)
[2023-08-30 07:56:38,387 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0
[2023-08-30 07:56:38,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3
[2023-08-30 07:56:38,585 INFO L445 BasicCegarLoop]: Path program histogram: [5, 2, 1, 1, 1, 1, 1, 1, 1]
[2023-08-30 07:56:38,588 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances
[2023-08-30 07:56:38,588 INFO L178 ceAbstractionStarter]: Computing trace abstraction results
[2023-08-30 07:56:38,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 07:56:38 BasicIcfg
[2023-08-30 07:56:38,649 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2023-08-30 07:56:38,650 INFO L113 PluginConnector]: ------------------------Witness Printer----------------------------
[2023-08-30 07:56:38,650 INFO L271 PluginConnector]: Initializing Witness Printer...
[2023-08-30 07:56:38,650 INFO L275 PluginConnector]: Witness Printer initialized
[2023-08-30 07:56:38,651 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:56:06" (3/4) ...
[2023-08-30 07:56:38,653 INFO L140 WitnessPrinter]: No result that supports witness generation found
[2023-08-30 07:56:38,653 INFO L132 PluginConnector]: ------------------------ END Witness Printer----------------------------
[2023-08-30 07:56:38,653 INFO L158 Benchmark]: Toolchain (without parser) took 33569.79ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 53.3MB in the beginning and 56.9MB in the end (delta: -3.6MB). Peak memory consumption was 15.0MB. Max. memory is 16.1GB.
[2023-08-30 07:56:38,653 INFO L158 Benchmark]: CDTParser took 0.22ms. Allocated memory is still 54.5MB. Free memory is still 32.7MB. There was no memory consumed. Max. memory is 16.1GB.
[2023-08-30 07:56:38,654 INFO L158 Benchmark]: CACSL2BoogieTranslator took 629.03ms. Allocated memory is still 77.6MB. Free memory was 53.3MB in the beginning and 44.9MB in the end (delta: 8.4MB). Peak memory consumption was 22.1MB. Max. memory is 16.1GB.
[2023-08-30 07:56:38,654 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.03ms. Allocated memory is still 77.6MB. Free memory was 44.9MB in the beginning and 42.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2023-08-30 07:56:38,654 INFO L158 Benchmark]: Boogie Preprocessor took 30.92ms. Allocated memory is still 77.6MB. Free memory was 42.5MB in the beginning and 40.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
[2023-08-30 07:56:38,654 INFO L158 Benchmark]: RCFGBuilder took 626.02ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 40.2MB in the beginning and 59.5MB in the end (delta: -19.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
[2023-08-30 07:56:38,655 INFO L158 Benchmark]: TraceAbstraction took 32214.23ms. Allocated memory is still 94.4MB. Free memory was 59.0MB in the beginning and 57.8MB in the end (delta: 1.2MB). Peak memory consumption was 39.0MB. Max. memory is 16.1GB.
[2023-08-30 07:56:38,655 INFO L158 Benchmark]: Witness Printer took 2.77ms. Allocated memory is still 94.4MB. Free memory was 57.8MB in the beginning and 56.9MB in the end (delta: 900.4kB). There was no memory consumed. Max. memory is 16.1GB.
[2023-08-30 07:56:38,656 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] #######################
--- Results ---
* Results from de.uni_freiburg.informatik.ultimate.core:
- StatisticsResult: Toolchain Benchmarks
Benchmark results are:
* CDTParser took 0.22ms. Allocated memory is still 54.5MB. Free memory is still 32.7MB. There was no memory consumed. Max. memory is 16.1GB.
* CACSL2BoogieTranslator took 629.03ms. Allocated memory is still 77.6MB. Free memory was 53.3MB in the beginning and 44.9MB in the end (delta: 8.4MB). Peak memory consumption was 22.1MB. Max. memory is 16.1GB.
* Boogie Procedure Inliner took 60.03ms. Allocated memory is still 77.6MB. Free memory was 44.9MB in the beginning and 42.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* Boogie Preprocessor took 30.92ms. Allocated memory is still 77.6MB. Free memory was 42.5MB in the beginning and 40.2MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB.
* RCFGBuilder took 626.02ms. Allocated memory was 77.6MB in the beginning and 94.4MB in the end (delta: 16.8MB). Free memory was 40.2MB in the beginning and 59.5MB in the end (delta: -19.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB.
* TraceAbstraction took 32214.23ms. Allocated memory is still 94.4MB. Free memory was 59.0MB in the beginning and 57.8MB in the end (delta: 1.2MB). Peak memory consumption was 39.0MB. Max. memory is 16.1GB.
* Witness Printer took 2.77ms. Allocated memory is still 94.4MB. Free memory was 57.8MB in the beginning and 56.9MB in the end (delta: 900.4kB). There was no memory consumed. Max. memory is 16.1GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- StatisticsResult: PetriNetLargeBlockEncoding benchmarks
Lipton Reduction Statistics: ReductionTime: 22.1s, 135 PlacesBefore, 42 PlacesAfterwards, 138 TransitionsBefore, 40 TransitionsAfterwards, 2314 CoEnabledTransitionPairs, 7 FixpointIterations, 73 TrivialSequentialCompositions, 40 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 8 ConcurrentYvCompositions, 5 ChoiceCompositions, 131 TotalNumberOfCompositions, 5425 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3243, independent: 3077, independent conditional: 0, independent unconditional: 3077, dependent: 166, dependent conditional: 0, dependent unconditional: 166, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1187, independent: 1163, independent conditional: 0, independent unconditional: 1163, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3243, independent: 1914, independent conditional: 0, independent unconditional: 1914, dependent: 142, dependent conditional: 0, dependent unconditional: 142, unknown: 1187, unknown conditional: 0, unknown unconditional: 1187] , Statistics on independence cache: Total cache size (in pairs): 173, Positive cache size: 158, Positive conditional cache size: 0, Positive unconditional cache size: 158, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0
- UnprovableResult [Line: 919]: Unable to prove that all allocated memory was freed
Unable to prove that all allocated memory was freed
Reason: overapproximation of memtrack at line 919.
Possible FailurePath:
[L870] 0 int num;
[L871] 0 unsigned long total;
[L872] 0 int flag;
[L873] 0 pthread_mutex_t m;
[L874] 0 pthread_cond_t empty, full;
[L907] 0 pthread_t t1, t2;
[L908] 0 num = 0
[L909] 0 total = 0
[L913] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0)
VAL [arg={0:0}, empty={4:0}, flag=0, full={5:0}, m={3:0}, num=0, pthread_create(&t1, 0, thread1, 0)=-1, t1={7:0}, t2={15:0}, total=0]
[L876] 1 int i;
[L877] 1 i = 0
VAL [arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, total=0]
[L914] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0)
VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, pthread_create(&t2, 0, thread2, 0)=0, t1={7:0}, t2={15:0}, total=0]
[L878] COND TRUE 1 i < 3
[L880] COND FALSE 1 !(num > 0)
VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=0, total=0]
[L882] 1 num++
[L915] 0 \read(t1)
VAL [\read(t1)=-1, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=0, m={3:0}, num=1, t1={7:0}, t2={15:0}, total=0]
[L885] 1 i++
VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, m={3:0}, num=1, total=0]
[L890] 2 int j;
[L891] 2 j = 0
VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0]
[L892] COND TRUE 2 j < 3
[L894] COND FALSE 2 !(num == 0)
[L896] 2 total = total + j
VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=0, m={3:0}, num=1, total=0]
[L897] 2 num--
[L900] 2 j++
VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=0, total=0]
[L878] COND TRUE 1 i < 3
[L880] COND FALSE 1 !(num > 0)
VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=1, j=1, m={3:0}, num=0, total=0]
[L882] 1 num++
[L892] COND TRUE 2 j < 3
[L885] 1 i++
VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=1, total=0]
[L894] COND FALSE 2 !(num == 0)
[L896] 2 total = total + j
VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=1, m={3:0}, num=1, total=1]
[L897] 2 num--
[L900] 2 j++
VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=0, total=1]
[L878] COND TRUE 1 i < 3
[L880] COND FALSE 1 !(num > 0)
VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=2, j=2, m={3:0}, num=0, total=1]
[L882] 1 num++
[L892] COND TRUE 2 j < 3
[L885] 1 i++
VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, total=1]
[L894] COND FALSE 2 !(num == 0)
[L896] 2 total = total + j
VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num=1, total=3]
[L897] 2 num--
VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num--=1, num=0, total=3]
[L878] COND FALSE 1 !(i < 3)
[L887] 1 return ((void *)0);
[L915] FCALL, JOIN 1 pthread_join(t1, 0)
VAL [\read(t1)=-1, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num--=1, num=0, t1={7:0}, t2={15:0}, total=3]
[L916] 0 \read(t2)
VAL [\read(t2)=0, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=2, m={3:0}, num--=1, num=0, t1={7:0}, t2={15:0}, total=3]
[L900] 2 j++
VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=0, full={5:0}, i=3, j=3, m={3:0}, num=0, total=3]
[L892] COND FALSE 2 !(j < 3)
[L902] 2 total = total + j
[L903] 2 flag = 1
[L904] 2 return ((void *)0);
[L916] FCALL, JOIN 2 pthread_join(t2, 0)
VAL [\read(t2)=0, \result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={7:0}, t2={15:0}, total=6]
[L917] COND TRUE 0 \read(flag)
[L918] COND FALSE 0 !(total != ((3 * (3 + 1)) / 2))
[L919] 0 reach_error()
VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={4:0}, flag=1, full={5:0}, i=3, j=3, m={3:0}, num=0, t1={7:0}, t2={15:0}, total=6]
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds
Unable to prove that pointer dereference always succeeds
Reason: Not analyzed.
- UnprovableResult [Line: 906]: Unable to prove that all allocated memory was freed
Unable to prove that all allocated memory was freed
Reason: Not analyzed.
- UnprovableResult [Line: 914]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users)
Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users)
Reason: Not analyzed.
- UnprovableResult [Line: 913]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users)
Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users)
Reason: Not analyzed.
- StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances
CFG has 5 procedures, 180 locations, 12 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 32.0s, OverallIterations: 14, TraceHistogramMax: 3, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 22.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 838 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 555 mSDsluCounter, 106 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 32 mSDsCounter, 77 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1449 IncrementalHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 77 mSolverCounterUnsat, 74 mSDtfsCounter, 1449 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 384 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=243occurred in iteration=13, InterpolantAutomatonStates: 53, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 304 NumberOfCodeBlocks, 278 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 378 ConstructedInterpolants, 35 QuantifiedInterpolants, 1719 SizeOfPredicates, 12 NumberOfNonLiveVariables, 1711 ConjunctsInSsa, 54 ConjunctsInUnsatCore, 17 InterpolantComputations, 9 PerfectInterpolantSequences, 149/193 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces
[2023-08-30 07:56:38,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0
Received shutdown request...
--- End real Ultimate output ---
Execution finished normally
Writing output log to file Ultimate.log
Result:
UNKNOWN: Overapproximated counterexample