./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-poker-hand-trans.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/chl-poker-hand-trans.wvr.c -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 4e4f4f4fe5f72416e0e44275f74b26f9ea6749f134c13c768c7ed2450972cbc3 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 12:14:06,896 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 12:14:06,898 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 12:14:06,942 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 12:14:06,944 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 12:14:06,947 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 12:14:06,950 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 12:14:06,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 12:14:06,956 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 12:14:06,961 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 12:14:06,962 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 12:14:06,965 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 12:14:06,965 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 12:14:06,967 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 12:14:06,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 12:14:06,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 12:14:06,973 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 12:14:06,974 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 12:14:06,975 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 12:14:06,980 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 12:14:06,981 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 12:14:06,982 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 12:14:06,983 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 12:14:06,984 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 12:14:06,990 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 12:14:06,991 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 12:14:06,991 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 12:14:06,994 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 12:14:06,995 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 12:14:06,996 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 12:14:06,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 12:14:07,001 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 12:14:07,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 12:14:07,002 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 12:14:07,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 12:14:07,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 12:14:07,004 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 12:14:07,005 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 12:14:07,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 12:14:07,006 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 12:14:07,006 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 12:14:07,008 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 12:14:07,042 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 12:14:07,042 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 12:14:07,043 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 12:14:07,043 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 12:14:07,044 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 12:14:07,044 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 12:14:07,045 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 12:14:07,045 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 12:14:07,045 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 12:14:07,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 12:14:07,046 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 12:14:07,046 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 12:14:07,047 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 12:14:07,047 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 12:14:07,047 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 12:14:07,047 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 12:14:07,047 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 12:14:07,048 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 12:14:07,048 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 12:14:07,048 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 12:14:07,048 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 12:14:07,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 12:14:07,049 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 12:14:07,049 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 12:14:07,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 12:14:07,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 12:14:07,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 12:14:07,050 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 12:14:07,050 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 12:14:07,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 12:14:07,050 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 12:14:07,050 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 12:14:07,051 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 12:14:07,051 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 12:14:07,051 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 12:14:07,051 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e4f4f4fe5f72416e0e44275f74b26f9ea6749f134c13c768c7ed2450972cbc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 12:14:07,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 12:14:07,367 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 12:14:07,368 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 12:14:07,369 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 12:14:07,372 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 12:14:07,374 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-poker-hand-trans.wvr.c [2023-09-01 12:14:08,409 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 12:14:08,582 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 12:14:08,583 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-trans.wvr.c [2023-09-01 12:14:08,590 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1b0b2011/d01ecb2928074519a61ad754c63c81ed/FLAGdf38db2f5 [2023-09-01 12:14:08,605 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1b0b2011/d01ecb2928074519a61ad754c63c81ed [2023-09-01 12:14:08,607 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 12:14:08,609 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 12:14:08,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 12:14:08,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 12:14:08,615 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 12:14:08,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:14:08" (1/1) ... [2023-09-01 12:14:08,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31058cc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:08, skipping insertion in model container [2023-09-01 12:14:08,616 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:14:08" (1/1) ... [2023-09-01 12:14:08,622 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 12:14:08,665 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 12:14:08,969 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-trans.wvr.c[18874,18887] [2023-09-01 12:14:08,990 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 12:14:09,001 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 12:14:09,089 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-trans.wvr.c[18874,18887] [2023-09-01 12:14:09,091 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 12:14:09,098 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 12:14:09,099 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 12:14:09,104 INFO L208 MainTranslator]: Completed translation [2023-09-01 12:14:09,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:09 WrapperNode [2023-09-01 12:14:09,105 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 12:14:09,116 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 12:14:09,116 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 12:14:09,116 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 12:14:09,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:09" (1/1) ... [2023-09-01 12:14:09,145 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:09" (1/1) ... [2023-09-01 12:14:09,240 INFO L138 Inliner]: procedures = 26, calls = 454, calls flagged for inlining = 100, calls inlined = 144, statements flattened = 2365 [2023-09-01 12:14:09,240 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 12:14:09,242 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 12:14:09,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 12:14:09,243 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 12:14:09,251 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:09" (1/1) ... [2023-09-01 12:14:09,251 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:09" (1/1) ... [2023-09-01 12:14:09,265 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:09" (1/1) ... [2023-09-01 12:14:09,266 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:09" (1/1) ... [2023-09-01 12:14:09,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:09" (1/1) ... [2023-09-01 12:14:09,348 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:09" (1/1) ... [2023-09-01 12:14:09,353 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:09" (1/1) ... [2023-09-01 12:14:09,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:09" (1/1) ... [2023-09-01 12:14:09,396 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 12:14:09,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 12:14:09,397 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 12:14:09,397 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 12:14:09,398 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:09" (1/1) ... [2023-09-01 12:14:09,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 12:14:09,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:14:09,423 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 12:14:09,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 12:14:09,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 12:14:09,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 12:14:09,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 12:14:09,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 12:14:09,460 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 12:14:09,460 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 12:14:09,460 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 12:14:09,460 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 12:14:09,460 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 12:14:09,460 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 12:14:09,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 12:14:09,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 12:14:09,461 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 12:14:09,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 12:14:09,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 12:14:09,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 12:14:09,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 12:14:09,464 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 12:14:09,706 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 12:14:09,708 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 12:14:11,507 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 12:14:13,641 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 12:14:13,641 INFO L302 CfgBuilder]: Removed 18 assume(true) statements. [2023-09-01 12:14:13,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:14:13 BoogieIcfgContainer [2023-09-01 12:14:13,645 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 12:14:13,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 12:14:13,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 12:14:13,649 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 12:14:13,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 12:14:08" (1/3) ... [2023-09-01 12:14:13,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c351ac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:14:13, skipping insertion in model container [2023-09-01 12:14:13,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:14:09" (2/3) ... [2023-09-01 12:14:13,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c351ac2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:14:13, skipping insertion in model container [2023-09-01 12:14:13,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:14:13" (3/3) ... [2023-09-01 12:14:13,653 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-poker-hand-trans.wvr.c [2023-09-01 12:14:13,661 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 12:14:13,668 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 12:14:13,669 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 12:14:13,669 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 12:14:14,083 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 12:14:14,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 657 places, 726 transitions, 1476 flow [2023-09-01 12:14:14,461 INFO L130 PetriNetUnfolder]: 79/723 cut-off events. [2023-09-01 12:14:14,461 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 12:14:14,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 736 conditions, 723 events. 79/723 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 934 event pairs, 0 based on Foata normal form. 0/643 useless extension candidates. Maximal degree in co-relation 642. Up to 7 conditions per place. [2023-09-01 12:14:14,470 INFO L82 GeneralOperation]: Start removeDead. Operand has 657 places, 726 transitions, 1476 flow [2023-09-01 12:14:14,482 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 644 places, 713 transitions, 1444 flow [2023-09-01 12:14:14,485 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 12:14:14,553 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 644 places, 713 transitions, 1444 flow [2023-09-01 12:14:14,559 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 644 places, 713 transitions, 1444 flow [2023-09-01 12:14:14,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 644 places, 713 transitions, 1444 flow [2023-09-01 12:14:14,813 INFO L130 PetriNetUnfolder]: 79/713 cut-off events. [2023-09-01 12:14:14,813 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 12:14:14,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 713 events. 79/713 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 930 event pairs, 0 based on Foata normal form. 0/634 useless extension candidates. Maximal degree in co-relation 642. Up to 7 conditions per place. [2023-09-01 12:14:14,826 INFO L119 LiptonReduction]: Number of co-enabled transitions 22110 [2023-09-01 12:15:32,753 INFO L134 LiptonReduction]: Checked pairs total: 22962 [2023-09-01 12:15:32,754 INFO L136 LiptonReduction]: Total number of compositions: 836 [2023-09-01 12:15:32,767 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 12:15:32,772 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1feed074, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 12:15:32,772 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-09-01 12:15:32,822 INFO L130 PetriNetUnfolder]: 24/57 cut-off events. [2023-09-01 12:15:32,822 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 12:15:32,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:15:32,823 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:15:32,824 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:15:32,827 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:15:32,827 INFO L85 PathProgramCache]: Analyzing trace with hash -411687634, now seen corresponding path program 1 times [2023-09-01 12:15:32,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:15:32,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540986645] [2023-09-01 12:15:32,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:15:32,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:15:33,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:15:33,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:15:33,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:15:33,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540986645] [2023-09-01 12:15:33,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540986645] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:15:33,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:15:33,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 12:15:33,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905895759] [2023-09-01 12:15:33,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:15:33,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 12:15:33,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:15:33,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 12:15:33,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 12:15:33,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 595 out of 1562 [2023-09-01 12:15:33,871 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 58 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 604.3333333333334) internal successors, (1813), 3 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:15:33,872 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:15:33,872 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 595 of 1562 [2023-09-01 12:15:33,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:15:35,352 INFO L130 PetriNetUnfolder]: 873/1099 cut-off events. [2023-09-01 12:15:35,353 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2023-09-01 12:15:35,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2266 conditions, 1099 events. 873/1099 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2607 event pairs, 333 based on Foata normal form. 0/559 useless extension candidates. Maximal degree in co-relation 1844. Up to 1097 conditions per place. [2023-09-01 12:15:35,360 INFO L137 encePairwiseOnDemand]: 1555/1562 looper letters, 55 selfloop transitions, 6 changer transitions 0/61 dead transitions. [2023-09-01 12:15:35,360 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 61 transitions, 262 flow [2023-09-01 12:15:35,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 12:15:35,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 12:15:35,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1849 transitions. [2023-09-01 12:15:35,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3945795988049509 [2023-09-01 12:15:35,384 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1849 transitions. [2023-09-01 12:15:35,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1849 transitions. [2023-09-01 12:15:35,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:15:35,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1849 transitions. [2023-09-01 12:15:35,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 616.3333333333334) internal successors, (1849), 3 states have internal predecessors, (1849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:15:35,407 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1562.0) internal successors, (6248), 4 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:15:35,409 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1562.0) internal successors, (6248), 4 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:15:35,411 INFO L175 Difference]: Start difference. First operand has 44 places, 58 transitions, 134 flow. Second operand 3 states and 1849 transitions. [2023-09-01 12:15:35,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 61 transitions, 262 flow [2023-09-01 12:15:35,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 61 transitions, 250 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-09-01 12:15:35,416 INFO L231 Difference]: Finished difference. Result has 41 places, 61 transitions, 154 flow [2023-09-01 12:15:35,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1562, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=41, PETRI_TRANSITIONS=61} [2023-09-01 12:15:35,421 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -3 predicate places. [2023-09-01 12:15:35,421 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 61 transitions, 154 flow [2023-09-01 12:15:35,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 604.3333333333334) internal successors, (1813), 3 states have internal predecessors, (1813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:15:35,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:15:35,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:15:35,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 12:15:35,423 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:15:35,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:15:35,424 INFO L85 PathProgramCache]: Analyzing trace with hash 2142957173, now seen corresponding path program 1 times [2023-09-01 12:15:35,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:15:35,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658212386] [2023-09-01 12:15:35,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:15:35,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:15:35,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:15:35,703 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 12:15:35,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:15:35,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658212386] [2023-09-01 12:15:35,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658212386] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:15:35,704 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:15:35,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 12:15:35,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39204819] [2023-09-01 12:15:35,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:15:35,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 12:15:35,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:15:35,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 12:15:35,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 12:15:35,874 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 595 out of 1562 [2023-09-01 12:15:35,877 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 61 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 605.3333333333334) internal successors, (1816), 3 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:15:35,877 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:15:35,877 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 595 of 1562 [2023-09-01 12:15:35,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:15:37,145 INFO L130 PetriNetUnfolder]: 873/1102 cut-off events. [2023-09-01 12:15:37,145 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 12:15:37,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2242 conditions, 1102 events. 873/1102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2580 event pairs, 333 based on Foata normal form. 0/564 useless extension candidates. Maximal degree in co-relation 2211. Up to 1100 conditions per place. [2023-09-01 12:15:37,150 INFO L137 encePairwiseOnDemand]: 1555/1562 looper letters, 58 selfloop transitions, 6 changer transitions 0/64 dead transitions. [2023-09-01 12:15:37,150 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 64 transitions, 288 flow [2023-09-01 12:15:37,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 12:15:37,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 12:15:37,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1849 transitions. [2023-09-01 12:15:37,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3945795988049509 [2023-09-01 12:15:37,156 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1849 transitions. [2023-09-01 12:15:37,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1849 transitions. [2023-09-01 12:15:37,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:15:37,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1849 transitions. [2023-09-01 12:15:37,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 616.3333333333334) internal successors, (1849), 3 states have internal predecessors, (1849), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:15:37,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1562.0) internal successors, (6248), 4 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:15:37,173 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1562.0) internal successors, (6248), 4 states have internal predecessors, (6248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:15:37,173 INFO L175 Difference]: Start difference. First operand has 41 places, 61 transitions, 154 flow. Second operand 3 states and 1849 transitions. [2023-09-01 12:15:37,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 64 transitions, 288 flow [2023-09-01 12:15:37,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 64 transitions, 282 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 12:15:37,176 INFO L231 Difference]: Finished difference. Result has 43 places, 64 transitions, 180 flow [2023-09-01 12:15:37,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1562, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=43, PETRI_TRANSITIONS=64} [2023-09-01 12:15:37,177 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -1 predicate places. [2023-09-01 12:15:37,177 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 64 transitions, 180 flow [2023-09-01 12:15:37,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 605.3333333333334) internal successors, (1816), 3 states have internal predecessors, (1816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:15:37,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:15:37,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:15:37,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 12:15:37,179 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:15:37,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:15:37,179 INFO L85 PathProgramCache]: Analyzing trace with hash 634694811, now seen corresponding path program 1 times [2023-09-01 12:15:37,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:15:37,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574574615] [2023-09-01 12:15:37,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:15:37,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:15:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:15:37,613 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-09-01 12:15:37,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:15:37,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574574615] [2023-09-01 12:15:37,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574574615] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 12:15:37,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1035252480] [2023-09-01 12:15:37,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:15:37,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:15:37,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:15:37,621 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 12:15:37,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 12:15:38,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:15:38,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 12:15:38,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 12:15:38,420 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-09-01 12:15:38,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 12:15:38,444 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-09-01 12:15:38,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1035252480] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 12:15:38,444 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 12:15:38,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-09-01 12:15:38,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947911572] [2023-09-01 12:15:38,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 12:15:38,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 12:15:38,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:15:38,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 12:15:38,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-09-01 12:15:38,890 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 571 out of 1562 [2023-09-01 12:15:38,895 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 64 transitions, 180 flow. Second operand has 8 states, 8 states have (on average 576.0) internal successors, (4608), 8 states have internal predecessors, (4608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:15:38,896 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:15:38,896 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 571 of 1562 [2023-09-01 12:15:38,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:15:40,323 INFO L130 PetriNetUnfolder]: 873/1132 cut-off events. [2023-09-01 12:15:40,324 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-09-01 12:15:40,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2331 conditions, 1132 events. 873/1132 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2580 event pairs, 333 based on Foata normal form. 9/604 useless extension candidates. Maximal degree in co-relation 2268. Up to 1097 conditions per place. [2023-09-01 12:15:40,329 INFO L137 encePairwiseOnDemand]: 1537/1562 looper letters, 46 selfloop transitions, 48 changer transitions 0/94 dead transitions. [2023-09-01 12:15:40,329 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 94 transitions, 464 flow [2023-09-01 12:15:40,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 12:15:40,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 12:15:40,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 4692 transitions. [2023-09-01 12:15:40,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37548015364916776 [2023-09-01 12:15:40,343 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 4692 transitions. [2023-09-01 12:15:40,343 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 4692 transitions. [2023-09-01 12:15:40,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:15:40,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 4692 transitions. [2023-09-01 12:15:40,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 586.5) internal successors, (4692), 8 states have internal predecessors, (4692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:15:40,374 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 1562.0) internal successors, (14058), 9 states have internal predecessors, (14058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:15:40,378 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 1562.0) internal successors, (14058), 9 states have internal predecessors, (14058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:15:40,379 INFO L175 Difference]: Start difference. First operand has 43 places, 64 transitions, 180 flow. Second operand 8 states and 4692 transitions. [2023-09-01 12:15:40,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 94 transitions, 464 flow [2023-09-01 12:15:40,380 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 94 transitions, 458 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 12:15:40,382 INFO L231 Difference]: Finished difference. Result has 51 places, 94 transitions, 442 flow [2023-09-01 12:15:40,382 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1562, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=442, PETRI_PLACES=51, PETRI_TRANSITIONS=94} [2023-09-01 12:15:40,383 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 7 predicate places. [2023-09-01 12:15:40,383 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 94 transitions, 442 flow [2023-09-01 12:15:40,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 576.0) internal successors, (4608), 8 states have internal predecessors, (4608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:15:40,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:15:40,385 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:15:40,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-09-01 12:15:40,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:15:40,595 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:15:40,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:15:40,596 INFO L85 PathProgramCache]: Analyzing trace with hash -795979998, now seen corresponding path program 1 times [2023-09-01 12:15:40,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:15:40,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303056948] [2023-09-01 12:15:40,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:15:40,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:15:40,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:15:41,205 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-09-01 12:15:41,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:15:41,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303056948] [2023-09-01 12:15:41,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303056948] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 12:15:41,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691545184] [2023-09-01 12:15:41,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:15:41,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:15:41,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:15:41,213 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 12:15:41,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 12:15:42,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:15:42,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 882 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 12:15:42,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 12:15:42,210 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-09-01 12:15:42,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 12:15:42,283 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-09-01 12:15:42,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691545184] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 12:15:42,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 12:15:42,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2023-09-01 12:15:42,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200578297] [2023-09-01 12:15:42,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 12:15:42,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-09-01 12:15:42,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:15:42,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-09-01 12:15:42,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=156, Unknown=0, NotChecked=0, Total=272 [2023-09-01 12:15:43,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 571 out of 1562 [2023-09-01 12:15:43,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 94 transitions, 442 flow. Second operand has 17 states, 17 states have (on average 574.8235294117648) internal successors, (9772), 17 states have internal predecessors, (9772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:15:43,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:15:43,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 571 of 1562 [2023-09-01 12:15:43,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:15:44,815 INFO L130 PetriNetUnfolder]: 873/1165 cut-off events. [2023-09-01 12:15:44,815 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 12:15:44,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2536 conditions, 1165 events. 873/1165 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2605 event pairs, 333 based on Foata normal form. 19/652 useless extension candidates. Maximal degree in co-relation 2434. Up to 1097 conditions per place. [2023-09-01 12:15:44,820 INFO L137 encePairwiseOnDemand]: 1537/1562 looper letters, 46 selfloop transitions, 81 changer transitions 0/127 dead transitions. [2023-09-01 12:15:44,821 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 127 transitions, 870 flow [2023-09-01 12:15:44,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-09-01 12:15:44,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-09-01 12:15:44,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 9867 transitions. [2023-09-01 12:15:44,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715824357912179 [2023-09-01 12:15:44,846 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 9867 transitions. [2023-09-01 12:15:44,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 9867 transitions. [2023-09-01 12:15:44,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:15:44,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 9867 transitions. [2023-09-01 12:15:44,870 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 580.4117647058823) internal successors, (9867), 17 states have internal predecessors, (9867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:15:44,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 1562.0) internal successors, (28116), 18 states have internal predecessors, (28116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:15:44,912 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 1562.0) internal successors, (28116), 18 states have internal predecessors, (28116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:15:44,912 INFO L175 Difference]: Start difference. First operand has 51 places, 94 transitions, 442 flow. Second operand 17 states and 9867 transitions. [2023-09-01 12:15:44,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 127 transitions, 870 flow [2023-09-01 12:15:44,916 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 127 transitions, 752 flow, removed 47 selfloop flow, removed 4 redundant places. [2023-09-01 12:15:44,919 INFO L231 Difference]: Finished difference. Result has 66 places, 127 transitions, 730 flow [2023-09-01 12:15:44,919 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1562, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=730, PETRI_PLACES=66, PETRI_TRANSITIONS=127} [2023-09-01 12:15:44,921 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 22 predicate places. [2023-09-01 12:15:44,922 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 127 transitions, 730 flow [2023-09-01 12:15:44,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 574.8235294117648) internal successors, (9772), 17 states have internal predecessors, (9772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-09-01 12:15:44,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:15:44,925 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 12:15:44,937 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 12:15:45,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-09-01 12:15:45,136 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-09-01 12:15:45,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:15:45,136 INFO L85 PathProgramCache]: Analyzing trace with hash 228461301, now seen corresponding path program 2 times [2023-09-01 12:15:45,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:15:45,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881568389] [2023-09-01 12:15:45,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:15:45,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:15:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:15:46,236 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2023-09-01 12:15:46,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:15:46,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881568389] [2023-09-01 12:15:46,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881568389] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 12:15:46,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880956341] [2023-09-01 12:15:46,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 12:15:46,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:15:46,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:15:46,240 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-09-01 12:15:46,244 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 12:15:47,059 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 12:15:47,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 12:15:47,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 23 conjunts are in the unsatisfiable core [2023-09-01 12:15:47,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 12:16:49,228 WARN L222 SmtUtils]: Spent 53.53s on a formula simplification. DAG size of input: 191 DAG size of output: 191 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 12:16:50,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 12:16:50,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 12:16:50,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 12:16:50,069 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 12:16:50,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 12:16:50,072 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 12:17:00,619 WARN L222 SmtUtils]: Spent 10.53s on a formula simplification. DAG size of input: 1726 DAG size of output: 1059 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-09-01 12:17:00,622 INFO L321 Elim1Store]: treesize reduction 1396, result has 59.5 percent of original size [2023-09-01 12:17:00,623 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 28 select indices, 28 select index equivalence classes, 6 disjoint index pairs (out of 378 index pairs), introduced 28 new quantified variables, introduced 400 case distinctions, treesize of input 1529 treesize of output 3336 Killed by 15