./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe011_tso.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-wmm/safe011_tso.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c5d6625a918041bec3ddf6b8a37ec84fd94f58444755be51392d35f521d3d51e --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 02:51:10,978 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 02:51:10,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 02:51:11,024 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 02:51:11,025 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 02:51:11,028 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 02:51:11,029 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 02:51:11,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 02:51:11,033 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 02:51:11,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 02:51:11,037 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 02:51:11,052 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 02:51:11,052 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 02:51:11,053 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 02:51:11,053 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 02:51:11,054 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 02:51:11,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 02:51:11,055 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 02:51:11,056 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 02:51:11,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 02:51:11,058 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 02:51:11,058 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 02:51:11,059 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 02:51:11,059 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 02:51:11,061 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 02:51:11,061 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 02:51:11,061 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 02:51:11,062 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 02:51:11,062 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 02:51:11,062 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 02:51:11,063 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 02:51:11,063 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 02:51:11,064 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 02:51:11,064 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 02:51:11,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 02:51:11,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 02:51:11,065 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 02:51:11,065 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 02:51:11,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 02:51:11,066 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 02:51:11,067 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 02:51:11,068 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 02:51:11,085 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 02:51:11,086 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 02:51:11,087 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 02:51:11,087 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 02:51:11,088 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 02:51:11,088 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 02:51:11,088 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 02:51:11,089 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 02:51:11,089 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 02:51:11,089 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 02:51:11,090 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 02:51:11,090 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 02:51:11,090 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 02:51:11,090 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 02:51:11,090 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 02:51:11,090 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 02:51:11,091 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 02:51:11,091 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 02:51:11,091 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 02:51:11,091 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 02:51:11,091 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 02:51:11,091 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 02:51:11,091 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 02:51:11,092 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 02:51:11,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:51:11,092 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 02:51:11,092 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 02:51:11,093 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 02:51:11,093 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 02:51:11,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 02:51:11,093 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 02:51:11,093 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 02:51:11,093 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 02:51:11,094 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 02:51:11,094 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c5d6625a918041bec3ddf6b8a37ec84fd94f58444755be51392d35f521d3d51e [2021-12-16 02:51:11,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 02:51:11,349 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 02:51:11,351 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 02:51:11,352 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 02:51:11,352 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 02:51:11,353 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe011_tso.i [2021-12-16 02:51:11,422 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0e5bc305/0881fe2263ec40cfb5ef8f08cf96510e/FLAG983b0ff2d [2021-12-16 02:51:11,813 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 02:51:11,814 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe011_tso.i [2021-12-16 02:51:11,829 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0e5bc305/0881fe2263ec40cfb5ef8f08cf96510e/FLAG983b0ff2d [2021-12-16 02:51:11,838 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0e5bc305/0881fe2263ec40cfb5ef8f08cf96510e [2021-12-16 02:51:11,847 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 02:51:11,848 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 02:51:11,860 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 02:51:11,861 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 02:51:11,863 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 02:51:11,864 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:51:11" (1/1) ... [2021-12-16 02:51:11,865 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27b670e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:11, skipping insertion in model container [2021-12-16 02:51:11,865 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:51:11" (1/1) ... [2021-12-16 02:51:11,872 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 02:51:11,914 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 02:51:12,069 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe011_tso.i[945,958] [2021-12-16 02:51:12,185 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:51:12,191 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 02:51:12,201 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe011_tso.i[945,958] [2021-12-16 02:51:12,244 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:51:12,282 INFO L208 MainTranslator]: Completed translation [2021-12-16 02:51:12,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:12 WrapperNode [2021-12-16 02:51:12,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 02:51:12,283 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 02:51:12,283 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 02:51:12,284 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 02:51:12,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:12" (1/1) ... [2021-12-16 02:51:12,302 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:12" (1/1) ... [2021-12-16 02:51:12,320 INFO L137 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2021-12-16 02:51:12,320 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 02:51:12,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 02:51:12,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 02:51:12,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 02:51:12,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:12" (1/1) ... [2021-12-16 02:51:12,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:12" (1/1) ... [2021-12-16 02:51:12,341 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:12" (1/1) ... [2021-12-16 02:51:12,342 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:12" (1/1) ... [2021-12-16 02:51:12,345 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:12" (1/1) ... [2021-12-16 02:51:12,354 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:12" (1/1) ... [2021-12-16 02:51:12,355 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:12" (1/1) ... [2021-12-16 02:51:12,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 02:51:12,361 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 02:51:12,361 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 02:51:12,361 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 02:51:12,363 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:12" (1/1) ... [2021-12-16 02:51:12,368 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:51:12,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:51:12,436 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) [2021-12-16 02:51:12,442 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 [2021-12-16 02:51:12,463 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 02:51:12,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-16 02:51:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 02:51:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 02:51:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 02:51:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2021-12-16 02:51:12,464 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2021-12-16 02:51:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2021-12-16 02:51:12,464 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2021-12-16 02:51:12,464 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2021-12-16 02:51:12,465 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2021-12-16 02:51:12,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 02:51:12,465 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-16 02:51:12,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 02:51:12,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 02:51:12,466 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-16 02:51:12,534 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 02:51:12,535 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 02:51:12,653 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 02:51:12,658 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 02:51:12,671 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-16 02:51:12,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:51:12 BoogieIcfgContainer [2021-12-16 02:51:12,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 02:51:12,674 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 02:51:12,674 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 02:51:12,677 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 02:51:12,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:51:11" (1/3) ... [2021-12-16 02:51:12,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58ad26a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:51:12, skipping insertion in model container [2021-12-16 02:51:12,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:51:12" (2/3) ... [2021-12-16 02:51:12,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58ad26a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:51:12, skipping insertion in model container [2021-12-16 02:51:12,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:51:12" (3/3) ... [2021-12-16 02:51:12,679 INFO L111 eAbstractionObserver]: Analyzing ICFG safe011_tso.i [2021-12-16 02:51:12,682 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-16 02:51:12,695 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 02:51:12,695 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 02:51:12,695 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-16 02:51:12,725 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,725 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,725 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,726 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,726 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,726 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,726 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,726 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,727 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,727 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,727 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,727 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,728 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,728 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,728 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,728 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,728 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,729 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,729 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,729 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,729 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,729 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,730 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,730 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,731 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,731 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,731 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,731 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,731 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,732 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,732 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,732 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,732 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,732 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,733 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,733 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,735 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,736 WARN L322 ript$VariableManager]: TermVariabe P1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,736 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,736 WARN L322 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,738 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,739 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,739 WARN L322 ript$VariableManager]: TermVariabe P2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,739 WARN L322 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,740 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,740 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,740 WARN L322 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,740 WARN L322 ript$VariableManager]: TermVariabe P0Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:51:12,741 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-12-16 02:51:12,771 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 02:51:12,776 INFO L339 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 02:51:12,777 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-16 02:51:12,784 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 99 places, 91 transitions, 197 flow [2021-12-16 02:51:12,813 INFO L129 PetriNetUnfolder]: 2/88 cut-off events. [2021-12-16 02:51:12,813 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-16 02:51:12,816 INFO L84 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 88 events. 2/88 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2021-12-16 02:51:12,816 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 91 transitions, 197 flow [2021-12-16 02:51:12,819 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 74 transitions, 157 flow [2021-12-16 02:51:12,833 INFO L129 PetriNetUnfolder]: 1/73 cut-off events. [2021-12-16 02:51:12,833 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-16 02:51:12,834 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:51:12,834 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:51:12,835 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 02:51:12,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:51:12,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1250208404, now seen corresponding path program 1 times [2021-12-16 02:51:12,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:51:12,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395381499] [2021-12-16 02:51:12,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:51:12,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:51:13,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:51:13,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:51:13,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:51:13,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395381499] [2021-12-16 02:51:13,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395381499] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:51:13,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:51:13,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:51:13,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498427335] [2021-12-16 02:51:13,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:51:13,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:51:13,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:51:13,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:51:13,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:51:13,276 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 91 [2021-12-16 02:51:13,280 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 74 transitions, 157 flow. Second operand has 7 states, 7 states have (on average 71.71428571428571) internal successors, (502), 7 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:13,280 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:51:13,280 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 91 [2021-12-16 02:51:13,281 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:51:13,579 INFO L129 PetriNetUnfolder]: 260/765 cut-off events. [2021-12-16 02:51:13,579 INFO L130 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2021-12-16 02:51:13,589 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1266 conditions, 765 events. 260/765 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4554 event pairs, 4 based on Foata normal form. 27/764 useless extension candidates. Maximal degree in co-relation 1230. Up to 127 conditions per place. [2021-12-16 02:51:13,594 INFO L132 encePairwiseOnDemand]: 79/91 looper letters, 25 selfloop transitions, 9 changer transitions 56/146 dead transitions. [2021-12-16 02:51:13,594 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 146 transitions, 490 flow [2021-12-16 02:51:13,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-16 02:51:13,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-16 02:51:13,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1006 transitions. [2021-12-16 02:51:13,610 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8503803888419273 [2021-12-16 02:51:13,612 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1006 transitions. [2021-12-16 02:51:13,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1006 transitions. [2021-12-16 02:51:13,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:51:13,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1006 transitions. [2021-12-16 02:51:13,623 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 77.38461538461539) internal successors, (1006), 13 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:13,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:13,633 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:13,634 INFO L186 Difference]: Start difference. First operand has 83 places, 74 transitions, 157 flow. Second operand 13 states and 1006 transitions. [2021-12-16 02:51:13,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 146 transitions, 490 flow [2021-12-16 02:51:13,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 146 transitions, 484 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-12-16 02:51:13,642 INFO L242 Difference]: Finished difference. Result has 104 places, 80 transitions, 252 flow [2021-12-16 02:51:13,643 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=252, PETRI_PLACES=104, PETRI_TRANSITIONS=80} [2021-12-16 02:51:13,646 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 21 predicate places. [2021-12-16 02:51:13,646 INFO L470 AbstractCegarLoop]: Abstraction has has 104 places, 80 transitions, 252 flow [2021-12-16 02:51:13,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.71428571428571) internal successors, (502), 7 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:13,648 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:51:13,648 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:51:13,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 02:51:13,649 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 02:51:13,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:51:13,649 INFO L85 PathProgramCache]: Analyzing trace with hash 366606597, now seen corresponding path program 1 times [2021-12-16 02:51:13,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:51:13,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309000674] [2021-12-16 02:51:13,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:51:13,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:51:13,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:51:13,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:51:13,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:51:13,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309000674] [2021-12-16 02:51:13,787 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309000674] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:51:13,787 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:51:13,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:51:13,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528636545] [2021-12-16 02:51:13,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:51:13,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:51:13,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:51:13,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:51:13,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:51:13,791 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 91 [2021-12-16 02:51:13,792 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 80 transitions, 252 flow. Second operand has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:13,792 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:51:13,792 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 91 [2021-12-16 02:51:13,792 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:51:13,998 INFO L129 PetriNetUnfolder]: 137/467 cut-off events. [2021-12-16 02:51:13,998 INFO L130 PetriNetUnfolder]: For 942/1292 co-relation queries the response was YES. [2021-12-16 02:51:14,000 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1439 conditions, 467 events. 137/467 cut-off events. For 942/1292 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2388 event pairs, 11 based on Foata normal form. 13/462 useless extension candidates. Maximal degree in co-relation 1390. Up to 81 conditions per place. [2021-12-16 02:51:14,003 INFO L132 encePairwiseOnDemand]: 81/91 looper letters, 26 selfloop transitions, 11 changer transitions 40/133 dead transitions. [2021-12-16 02:51:14,003 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 133 transitions, 780 flow [2021-12-16 02:51:14,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-16 02:51:14,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-16 02:51:14,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 978 transitions. [2021-12-16 02:51:14,005 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8267117497886729 [2021-12-16 02:51:14,005 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 978 transitions. [2021-12-16 02:51:14,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 978 transitions. [2021-12-16 02:51:14,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:51:14,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 978 transitions. [2021-12-16 02:51:14,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 75.23076923076923) internal successors, (978), 13 states have internal predecessors, (978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:14,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:14,010 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:14,010 INFO L186 Difference]: Start difference. First operand has 104 places, 80 transitions, 252 flow. Second operand 13 states and 978 transitions. [2021-12-16 02:51:14,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 133 transitions, 780 flow [2021-12-16 02:51:14,019 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 133 transitions, 756 flow, removed 12 selfloop flow, removed 3 redundant places. [2021-12-16 02:51:14,023 INFO L242 Difference]: Finished difference. Result has 116 places, 86 transitions, 372 flow [2021-12-16 02:51:14,023 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=372, PETRI_PLACES=116, PETRI_TRANSITIONS=86} [2021-12-16 02:51:14,024 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 33 predicate places. [2021-12-16 02:51:14,024 INFO L470 AbstractCegarLoop]: Abstraction has has 116 places, 86 transitions, 372 flow [2021-12-16 02:51:14,025 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.85714285714286) internal successors, (503), 7 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:14,025 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:51:14,025 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:51:14,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 02:51:14,026 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 02:51:14,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:51:14,027 INFO L85 PathProgramCache]: Analyzing trace with hash -614388892, now seen corresponding path program 1 times [2021-12-16 02:51:14,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:51:14,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30365500] [2021-12-16 02:51:14,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:51:14,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:51:14,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:51:14,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:51:14,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:51:14,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30365500] [2021-12-16 02:51:14,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30365500] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:51:14,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:51:14,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 02:51:14,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545872210] [2021-12-16 02:51:14,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:51:14,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 02:51:14,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:51:14,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 02:51:14,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 02:51:14,141 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 91 [2021-12-16 02:51:14,142 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 86 transitions, 372 flow. Second operand has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:14,142 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:51:14,143 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 91 [2021-12-16 02:51:14,143 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:51:14,279 INFO L129 PetriNetUnfolder]: 63/335 cut-off events. [2021-12-16 02:51:14,279 INFO L130 PetriNetUnfolder]: For 1393/1578 co-relation queries the response was YES. [2021-12-16 02:51:14,281 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1142 conditions, 335 events. 63/335 cut-off events. For 1393/1578 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1639 event pairs, 16 based on Foata normal form. 18/341 useless extension candidates. Maximal degree in co-relation 1084. Up to 90 conditions per place. [2021-12-16 02:51:14,283 INFO L132 encePairwiseOnDemand]: 84/91 looper letters, 17 selfloop transitions, 4 changer transitions 22/113 dead transitions. [2021-12-16 02:51:14,283 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 113 transitions, 724 flow [2021-12-16 02:51:14,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 02:51:14,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-16 02:51:14,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 712 transitions. [2021-12-16 02:51:14,286 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8693528693528694 [2021-12-16 02:51:14,286 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 712 transitions. [2021-12-16 02:51:14,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 712 transitions. [2021-12-16 02:51:14,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:51:14,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 712 transitions. [2021-12-16 02:51:14,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 79.11111111111111) internal successors, (712), 9 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:14,290 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:14,291 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 91.0) internal successors, (910), 10 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:14,293 INFO L186 Difference]: Start difference. First operand has 116 places, 86 transitions, 372 flow. Second operand 9 states and 712 transitions. [2021-12-16 02:51:14,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 113 transitions, 724 flow [2021-12-16 02:51:14,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 113 transitions, 679 flow, removed 21 selfloop flow, removed 7 redundant places. [2021-12-16 02:51:14,300 INFO L242 Difference]: Finished difference. Result has 115 places, 89 transitions, 431 flow [2021-12-16 02:51:14,301 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=431, PETRI_PLACES=115, PETRI_TRANSITIONS=89} [2021-12-16 02:51:14,302 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 32 predicate places. [2021-12-16 02:51:14,303 INFO L470 AbstractCegarLoop]: Abstraction has has 115 places, 89 transitions, 431 flow [2021-12-16 02:51:14,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:14,303 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:51:14,304 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:51:14,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 02:51:14,304 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 02:51:14,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:51:14,306 INFO L85 PathProgramCache]: Analyzing trace with hash -368751566, now seen corresponding path program 1 times [2021-12-16 02:51:14,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:51:14,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466283570] [2021-12-16 02:51:14,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:51:14,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:51:14,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:51:14,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:51:14,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:51:14,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466283570] [2021-12-16 02:51:14,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466283570] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:51:14,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:51:14,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:51:14,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137688845] [2021-12-16 02:51:14,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:51:14,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:51:14,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:51:14,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:51:14,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:51:14,462 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2021-12-16 02:51:14,463 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 89 transitions, 431 flow. Second operand has 7 states, 7 states have (on average 70.28571428571429) internal successors, (492), 7 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:14,463 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:51:14,463 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2021-12-16 02:51:14,463 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:51:14,756 INFO L129 PetriNetUnfolder]: 238/809 cut-off events. [2021-12-16 02:51:14,757 INFO L130 PetriNetUnfolder]: For 4085/4657 co-relation queries the response was YES. [2021-12-16 02:51:14,760 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2841 conditions, 809 events. 238/809 cut-off events. For 4085/4657 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5054 event pairs, 2 based on Foata normal form. 25/813 useless extension candidates. Maximal degree in co-relation 2778. Up to 131 conditions per place. [2021-12-16 02:51:14,765 INFO L132 encePairwiseOnDemand]: 79/91 looper letters, 47 selfloop transitions, 27 changer transitions 59/187 dead transitions. [2021-12-16 02:51:14,765 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 187 transitions, 1660 flow [2021-12-16 02:51:14,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-16 02:51:14,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-16 02:51:14,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1251 transitions. [2021-12-16 02:51:14,768 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8086619263089851 [2021-12-16 02:51:14,769 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1251 transitions. [2021-12-16 02:51:14,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1251 transitions. [2021-12-16 02:51:14,769 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:51:14,769 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1251 transitions. [2021-12-16 02:51:14,771 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 73.58823529411765) internal successors, (1251), 17 states have internal predecessors, (1251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:14,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 91.0) internal successors, (1638), 18 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) [2021-12-16 02:51:14,775 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 91.0) internal successors, (1638), 18 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) [2021-12-16 02:51:14,776 INFO L186 Difference]: Start difference. First operand has 115 places, 89 transitions, 431 flow. Second operand 17 states and 1251 transitions. [2021-12-16 02:51:14,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 187 transitions, 1660 flow [2021-12-16 02:51:14,783 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 187 transitions, 1592 flow, removed 29 selfloop flow, removed 7 redundant places. [2021-12-16 02:51:14,787 INFO L242 Difference]: Finished difference. Result has 134 places, 105 transitions, 749 flow [2021-12-16 02:51:14,788 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=409, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=749, PETRI_PLACES=134, PETRI_TRANSITIONS=105} [2021-12-16 02:51:14,789 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 51 predicate places. [2021-12-16 02:51:14,789 INFO L470 AbstractCegarLoop]: Abstraction has has 134 places, 105 transitions, 749 flow [2021-12-16 02:51:14,789 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 70.28571428571429) internal successors, (492), 7 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:14,789 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:51:14,790 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:51:14,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 02:51:14,790 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 02:51:14,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:51:14,791 INFO L85 PathProgramCache]: Analyzing trace with hash -46698488, now seen corresponding path program 1 times [2021-12-16 02:51:14,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:51:14,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984744451] [2021-12-16 02:51:14,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:51:14,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:51:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:51:14,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:51:14,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:51:14,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984744451] [2021-12-16 02:51:14,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984744451] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:51:14,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:51:14,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 02:51:14,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322316474] [2021-12-16 02:51:14,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:51:14,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 02:51:14,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:51:14,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 02:51:14,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:51:14,928 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 91 [2021-12-16 02:51:14,928 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 105 transitions, 749 flow. Second operand has 8 states, 8 states have (on average 70.0) internal successors, (560), 8 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:14,928 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:51:14,929 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 91 [2021-12-16 02:51:14,929 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:51:15,097 INFO L129 PetriNetUnfolder]: 163/533 cut-off events. [2021-12-16 02:51:15,098 INFO L130 PetriNetUnfolder]: For 5143/7153 co-relation queries the response was YES. [2021-12-16 02:51:15,101 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2592 conditions, 533 events. 163/533 cut-off events. For 5143/7153 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2780 event pairs, 9 based on Foata normal form. 17/527 useless extension candidates. Maximal degree in co-relation 2516. Up to 104 conditions per place. [2021-12-16 02:51:15,104 INFO L132 encePairwiseOnDemand]: 80/91 looper letters, 28 selfloop transitions, 10 changer transitions 75/167 dead transitions. [2021-12-16 02:51:15,104 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 167 transitions, 1778 flow [2021-12-16 02:51:15,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 02:51:15,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-16 02:51:15,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 813 transitions. [2021-12-16 02:51:15,106 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8121878121878122 [2021-12-16 02:51:15,106 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 813 transitions. [2021-12-16 02:51:15,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 813 transitions. [2021-12-16 02:51:15,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:51:15,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 813 transitions. [2021-12-16 02:51:15,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 73.9090909090909) internal successors, (813), 11 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:15,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 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) [2021-12-16 02:51:15,111 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 91.0) internal successors, (1092), 12 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) [2021-12-16 02:51:15,111 INFO L186 Difference]: Start difference. First operand has 134 places, 105 transitions, 749 flow. Second operand 11 states and 813 transitions. [2021-12-16 02:51:15,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 167 transitions, 1778 flow [2021-12-16 02:51:15,123 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 167 transitions, 1678 flow, removed 50 selfloop flow, removed 12 redundant places. [2021-12-16 02:51:15,127 INFO L242 Difference]: Finished difference. Result has 128 places, 85 transitions, 464 flow [2021-12-16 02:51:15,127 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=719, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=464, PETRI_PLACES=128, PETRI_TRANSITIONS=85} [2021-12-16 02:51:15,129 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 45 predicate places. [2021-12-16 02:51:15,129 INFO L470 AbstractCegarLoop]: Abstraction has has 128 places, 85 transitions, 464 flow [2021-12-16 02:51:15,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 70.0) internal successors, (560), 8 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:15,130 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:51:15,130 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:51:15,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 02:51:15,130 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 02:51:15,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:51:15,130 INFO L85 PathProgramCache]: Analyzing trace with hash 41153611, now seen corresponding path program 1 times [2021-12-16 02:51:15,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:51:15,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745121762] [2021-12-16 02:51:15,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:51:15,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:51:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:51:15,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:51:15,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:51:15,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745121762] [2021-12-16 02:51:15,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745121762] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:51:15,211 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:51:15,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 02:51:15,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962395845] [2021-12-16 02:51:15,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:51:15,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 02:51:15,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:51:15,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 02:51:15,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 02:51:15,213 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2021-12-16 02:51:15,214 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 85 transitions, 464 flow. Second operand has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:15,214 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:51:15,214 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2021-12-16 02:51:15,214 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:51:15,397 INFO L129 PetriNetUnfolder]: 274/814 cut-off events. [2021-12-16 02:51:15,397 INFO L130 PetriNetUnfolder]: For 1874/1958 co-relation queries the response was YES. [2021-12-16 02:51:15,403 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1985 conditions, 814 events. 274/814 cut-off events. For 1874/1958 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5640 event pairs, 14 based on Foata normal form. 0/734 useless extension candidates. Maximal degree in co-relation 1912. Up to 196 conditions per place. [2021-12-16 02:51:15,406 INFO L132 encePairwiseOnDemand]: 81/91 looper letters, 29 selfloop transitions, 17 changer transitions 0/117 dead transitions. [2021-12-16 02:51:15,406 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 117 transitions, 624 flow [2021-12-16 02:51:15,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 02:51:15,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-16 02:51:15,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 788 transitions. [2021-12-16 02:51:15,408 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.865934065934066 [2021-12-16 02:51:15,408 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 788 transitions. [2021-12-16 02:51:15,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 788 transitions. [2021-12-16 02:51:15,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:51:15,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 788 transitions. [2021-12-16 02:51:15,410 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 78.8) internal successors, (788), 10 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:15,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:15,411 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 91.0) internal successors, (1001), 11 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:15,411 INFO L186 Difference]: Start difference. First operand has 128 places, 85 transitions, 464 flow. Second operand 10 states and 788 transitions. [2021-12-16 02:51:15,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 117 transitions, 624 flow [2021-12-16 02:51:15,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 117 transitions, 539 flow, removed 22 selfloop flow, removed 14 redundant places. [2021-12-16 02:51:15,417 INFO L242 Difference]: Finished difference. Result has 123 places, 100 transitions, 499 flow [2021-12-16 02:51:15,417 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=499, PETRI_PLACES=123, PETRI_TRANSITIONS=100} [2021-12-16 02:51:15,419 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 40 predicate places. [2021-12-16 02:51:15,419 INFO L470 AbstractCegarLoop]: Abstraction has has 123 places, 100 transitions, 499 flow [2021-12-16 02:51:15,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 75.66666666666667) internal successors, (454), 6 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:15,419 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:51:15,419 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:51:15,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 02:51:15,420 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 02:51:15,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:51:15,420 INFO L85 PathProgramCache]: Analyzing trace with hash -918172060, now seen corresponding path program 1 times [2021-12-16 02:51:15,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:51:15,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667103098] [2021-12-16 02:51:15,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:51:15,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:51:15,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:51:15,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:51:15,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:51:15,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667103098] [2021-12-16 02:51:15,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667103098] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:51:15,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:51:15,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 02:51:15,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347443044] [2021-12-16 02:51:15,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:51:15,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 02:51:15,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:51:15,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 02:51:15,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-16 02:51:15,510 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2021-12-16 02:51:15,510 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 100 transitions, 499 flow. Second operand has 7 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:15,510 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:51:15,510 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2021-12-16 02:51:15,510 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:51:15,699 INFO L129 PetriNetUnfolder]: 249/783 cut-off events. [2021-12-16 02:51:15,699 INFO L130 PetriNetUnfolder]: For 2038/2163 co-relation queries the response was YES. [2021-12-16 02:51:15,704 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2643 conditions, 783 events. 249/783 cut-off events. For 2038/2163 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5644 event pairs, 3 based on Foata normal form. 57/789 useless extension candidates. Maximal degree in co-relation 2583. Up to 242 conditions per place. [2021-12-16 02:51:15,707 INFO L132 encePairwiseOnDemand]: 81/91 looper letters, 22 selfloop transitions, 32 changer transitions 13/138 dead transitions. [2021-12-16 02:51:15,707 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 138 transitions, 869 flow [2021-12-16 02:51:15,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-16 02:51:15,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-16 02:51:15,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1025 transitions. [2021-12-16 02:51:15,710 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8664412510566357 [2021-12-16 02:51:15,710 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1025 transitions. [2021-12-16 02:51:15,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1025 transitions. [2021-12-16 02:51:15,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:51:15,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1025 transitions. [2021-12-16 02:51:15,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 78.84615384615384) internal successors, (1025), 13 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:15,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:15,714 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 91.0) internal successors, (1274), 14 states have internal predecessors, (1274), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:15,714 INFO L186 Difference]: Start difference. First operand has 123 places, 100 transitions, 499 flow. Second operand 13 states and 1025 transitions. [2021-12-16 02:51:15,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 138 transitions, 869 flow [2021-12-16 02:51:15,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 138 transitions, 841 flow, removed 13 selfloop flow, removed 4 redundant places. [2021-12-16 02:51:15,721 INFO L242 Difference]: Finished difference. Result has 135 places, 116 transitions, 674 flow [2021-12-16 02:51:15,721 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=674, PETRI_PLACES=135, PETRI_TRANSITIONS=116} [2021-12-16 02:51:15,722 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 52 predicate places. [2021-12-16 02:51:15,722 INFO L470 AbstractCegarLoop]: Abstraction has has 135 places, 116 transitions, 674 flow [2021-12-16 02:51:15,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:15,722 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:51:15,723 INFO L254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:51:15,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 02:51:15,723 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 02:51:15,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:51:15,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1682813595, now seen corresponding path program 1 times [2021-12-16 02:51:15,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:51:15,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131549537] [2021-12-16 02:51:15,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:51:15,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:51:15,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:51:15,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:51:15,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:51:15,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131549537] [2021-12-16 02:51:15,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131549537] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:51:15,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:51:15,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 02:51:15,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610200899] [2021-12-16 02:51:15,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:51:15,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 02:51:15,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:51:15,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 02:51:15,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-16 02:51:15,809 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 91 [2021-12-16 02:51:15,815 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 116 transitions, 674 flow. Second operand has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:15,815 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:51:15,815 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 91 [2021-12-16 02:51:15,815 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:51:16,125 INFO L129 PetriNetUnfolder]: 198/632 cut-off events. [2021-12-16 02:51:16,125 INFO L130 PetriNetUnfolder]: For 2513/2848 co-relation queries the response was YES. [2021-12-16 02:51:16,143 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2518 conditions, 632 events. 198/632 cut-off events. For 2513/2848 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 4702 event pairs, 0 based on Foata normal form. 71/650 useless extension candidates. Maximal degree in co-relation 2486. Up to 195 conditions per place. [2021-12-16 02:51:16,145 INFO L132 encePairwiseOnDemand]: 83/91 looper letters, 0 selfloop transitions, 0 changer transitions 123/123 dead transitions. [2021-12-16 02:51:16,145 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 123 transitions, 847 flow [2021-12-16 02:51:16,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-16 02:51:16,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-12-16 02:51:16,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1163 transitions. [2021-12-16 02:51:16,147 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.852014652014652 [2021-12-16 02:51:16,147 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1163 transitions. [2021-12-16 02:51:16,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1163 transitions. [2021-12-16 02:51:16,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:51:16,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1163 transitions. [2021-12-16 02:51:16,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 77.53333333333333) internal successors, (1163), 15 states have internal predecessors, (1163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:16,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 91.0) internal successors, (1456), 16 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:16,152 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 91.0) internal successors, (1456), 16 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:16,167 INFO L186 Difference]: Start difference. First operand has 135 places, 116 transitions, 674 flow. Second operand 15 states and 1163 transitions. [2021-12-16 02:51:16,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 123 transitions, 847 flow [2021-12-16 02:51:16,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 123 transitions, 673 flow, removed 55 selfloop flow, removed 19 redundant places. [2021-12-16 02:51:16,177 INFO L242 Difference]: Finished difference. Result has 121 places, 0 transitions, 0 flow [2021-12-16 02:51:16,178 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=91, PETRI_DIFFERENCE_MINUEND_FLOW=488, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=0, PETRI_PLACES=121, PETRI_TRANSITIONS=0} [2021-12-16 02:51:16,178 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 38 predicate places. [2021-12-16 02:51:16,178 INFO L470 AbstractCegarLoop]: Abstraction has has 121 places, 0 transitions, 0 flow [2021-12-16 02:51:16,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 75.5) internal successors, (604), 8 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:51:16,180 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2021-12-16 02:51:16,181 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2021-12-16 02:51:16,181 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2021-12-16 02:51:16,181 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2021-12-16 02:51:16,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 02:51:16,184 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 02:51:16,201 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-12-16 02:51:16,201 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-16 02:51:16,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.12 02:51:16 BasicIcfg [2021-12-16 02:51:16,203 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-16 02:51:16,204 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-16 02:51:16,204 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-16 02:51:16,204 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-16 02:51:16,204 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:51:12" (3/4) ... [2021-12-16 02:51:16,206 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-16 02:51:16,210 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2021-12-16 02:51:16,210 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2021-12-16 02:51:16,210 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2021-12-16 02:51:16,213 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2021-12-16 02:51:16,213 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-16 02:51:16,213 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-16 02:51:16,213 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-16 02:51:16,232 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-16 02:51:16,232 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-16 02:51:16,232 INFO L158 Benchmark]: Toolchain (without parser) took 4384.11ms. Allocated memory was 138.4MB in the beginning and 184.5MB in the end (delta: 46.1MB). Free memory was 106.3MB in the beginning and 105.9MB in the end (delta: 411.4kB). Peak memory consumption was 46.3MB. Max. memory is 16.1GB. [2021-12-16 02:51:16,233 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 83.9MB. Free memory was 43.6MB in the beginning and 43.6MB in the end (delta: 40.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-16 02:51:16,233 INFO L158 Benchmark]: CACSL2BoogieTranslator took 422.60ms. Allocated memory is still 138.4MB. Free memory was 106.1MB in the beginning and 104.7MB in the end (delta: 1.4MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. [2021-12-16 02:51:16,233 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.98ms. Allocated memory is still 138.4MB. Free memory was 104.7MB in the beginning and 102.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 02:51:16,233 INFO L158 Benchmark]: Boogie Preprocessor took 38.98ms. Allocated memory is still 138.4MB. Free memory was 102.5MB in the beginning and 101.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 02:51:16,233 INFO L158 Benchmark]: RCFGBuilder took 312.55ms. Allocated memory is still 138.4MB. Free memory was 101.4MB in the beginning and 88.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-16 02:51:16,233 INFO L158 Benchmark]: TraceAbstraction took 3528.87ms. Allocated memory was 138.4MB in the beginning and 184.5MB in the end (delta: 46.1MB). Free memory was 88.4MB in the beginning and 109.1MB in the end (delta: -20.7MB). Peak memory consumption was 25.7MB. Max. memory is 16.1GB. [2021-12-16 02:51:16,234 INFO L158 Benchmark]: Witness Printer took 28.47ms. Allocated memory is still 184.5MB. Free memory was 109.1MB in the beginning and 105.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-16 02:51:16,235 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 83.9MB. Free memory was 43.6MB in the beginning and 43.6MB in the end (delta: 40.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 422.60ms. Allocated memory is still 138.4MB. Free memory was 106.1MB in the beginning and 104.7MB in the end (delta: 1.4MB). Peak memory consumption was 10.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.98ms. Allocated memory is still 138.4MB. Free memory was 104.7MB in the beginning and 102.5MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.98ms. Allocated memory is still 138.4MB. Free memory was 102.5MB in the beginning and 101.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 312.55ms. Allocated memory is still 138.4MB. Free memory was 101.4MB in the beginning and 88.8MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 3528.87ms. Allocated memory was 138.4MB in the beginning and 184.5MB in the end (delta: 46.1MB). Free memory was 88.4MB in the beginning and 109.1MB in the end (delta: -20.7MB). Peak memory consumption was 25.7MB. Max. memory is 16.1GB. * Witness Printer took 28.47ms. Allocated memory is still 184.5MB. Free memory was 109.1MB in the beginning and 105.9MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 114 locations, 4 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: 3.4s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 443 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 443 mSDsluCounter, 565 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 526 mSDsCounter, 102 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 482 IncrementalHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 102 mSolverCounterUnsat, 131 mSDtfsCounter, 482 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 120 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=749occurred in iteration=4, InterpolantAutomatonStates: 101, 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 473 NumberOfCodeBlocks, 473 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 465 ConstructedInterpolants, 0 QuantifiedInterpolants, 1947 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-16 02:51:16,270 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: TRUE