./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-atomic/szymanski.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_063cf11d-1fea-47b3-bd81-c13537aa54a1/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_063cf11d-1fea-47b3-bd81-c13537aa54a1/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_063cf11d-1fea-47b3-bd81-c13537aa54a1/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_063cf11d-1fea-47b3-bd81-c13537aa54a1/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-atomic/szymanski.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_063cf11d-1fea-47b3-bd81-c13537aa54a1/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_063cf11d-1fea-47b3-bd81-c13537aa54a1/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --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 bc84ca2197caec735a8480f9d61b820c686ed9ae52711f2c7500999694c2ad40 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:57:03,612 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:57:03,728 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_063cf11d-1fea-47b3-bd81-c13537aa54a1/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:57:03,735 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:57:03,736 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:57:03,772 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:57:03,774 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:57:03,774 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:57:03,775 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:57:03,780 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:57:03,782 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:57:03,782 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:57:03,783 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:57:03,784 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:57:03,785 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:57:03,785 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:57:03,786 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:57:03,786 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:57:03,786 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:57:03,802 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:57:03,803 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:57:03,803 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:57:03,804 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:57:03,804 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:57:03,805 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:57:03,806 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:57:03,806 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:57:03,806 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:57:03,807 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:57:03,807 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:57:03,808 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:57:03,809 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:57:03,809 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:57:03,809 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:57:03,809 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:57:03,810 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:57:03,810 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:57:03,810 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:57:03,811 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:57:03,811 INFO L153 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_063cf11d-1fea-47b3-bd81-c13537aa54a1/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_063cf11d-1fea-47b3-bd81-c13537aa54a1/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bc84ca2197caec735a8480f9d61b820c686ed9ae52711f2c7500999694c2ad40 [2023-11-19 07:57:04,092 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:57:04,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:57:04,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:57:04,117 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:57:04,118 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:57:04,119 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_063cf11d-1fea-47b3-bd81-c13537aa54a1/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-atomic/szymanski.i [2023-11-19 07:57:07,174 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:57:07,525 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:57:07,525 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_063cf11d-1fea-47b3-bd81-c13537aa54a1/sv-benchmarks/c/pthread-atomic/szymanski.i [2023-11-19 07:57:07,551 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_063cf11d-1fea-47b3-bd81-c13537aa54a1/bin/uautomizer-verify-uCwYo4JHxu/data/1b11098d6/12843d47f66b40d398523191d82681be/FLAG3221391da [2023-11-19 07:57:07,576 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_063cf11d-1fea-47b3-bd81-c13537aa54a1/bin/uautomizer-verify-uCwYo4JHxu/data/1b11098d6/12843d47f66b40d398523191d82681be [2023-11-19 07:57:07,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:57:07,584 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:57:07,588 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:57:07,588 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:57:07,594 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:57:07,594 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:07" (1/1) ... [2023-11-19 07:57:07,596 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29b2e981 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:07, skipping insertion in model container [2023-11-19 07:57:07,596 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:57:07" (1/1) ... [2023-11-19 07:57:07,660 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:57:07,867 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 07:57:08,070 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_063cf11d-1fea-47b3-bd81-c13537aa54a1/sv-benchmarks/c/pthread-atomic/szymanski.i[31505,31518] [2023-11-19 07:57:08,084 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_063cf11d-1fea-47b3-bd81-c13537aa54a1/sv-benchmarks/c/pthread-atomic/szymanski.i[32915,32928] [2023-11-19 07:57:08,096 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:57:08,113 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:57:08,144 WARN L635 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-11-19 07:57:08,180 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_063cf11d-1fea-47b3-bd81-c13537aa54a1/sv-benchmarks/c/pthread-atomic/szymanski.i[31505,31518] [2023-11-19 07:57:08,185 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_063cf11d-1fea-47b3-bd81-c13537aa54a1/sv-benchmarks/c/pthread-atomic/szymanski.i[32915,32928] [2023-11-19 07:57:08,192 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:57:08,240 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:57:08,240 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:57:08,241 WARN L675 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:57:08,276 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:57:08,277 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:08 WrapperNode [2023-11-19 07:57:08,277 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:57:08,285 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:57:08,285 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:57:08,285 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:57:08,294 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:08" (1/1) ... [2023-11-19 07:57:08,311 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:08" (1/1) ... [2023-11-19 07:57:08,360 INFO L138 Inliner]: procedures = 171, calls = 75, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 41 [2023-11-19 07:57:08,360 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:57:08,361 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:57:08,361 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:57:08,361 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:57:08,372 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:08" (1/1) ... [2023-11-19 07:57:08,372 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:08" (1/1) ... [2023-11-19 07:57:08,386 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:08" (1/1) ... [2023-11-19 07:57:08,387 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:08" (1/1) ... [2023-11-19 07:57:08,394 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:08" (1/1) ... [2023-11-19 07:57:08,400 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:08" (1/1) ... [2023-11-19 07:57:08,402 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:08" (1/1) ... [2023-11-19 07:57:08,404 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:08" (1/1) ... [2023-11-19 07:57:08,407 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:57:08,408 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:57:08,409 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:57:08,409 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:57:08,410 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:08" (1/1) ... [2023-11-19 07:57:08,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:57:08,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_063cf11d-1fea-47b3-bd81-c13537aa54a1/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:57:08,447 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_063cf11d-1fea-47b3-bd81-c13537aa54a1/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:57:08,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_063cf11d-1fea-47b3-bd81-c13537aa54a1/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:57:08,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:57:08,491 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-11-19 07:57:08,492 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-11-19 07:57:08,492 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-19 07:57:08,494 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-19 07:57:08,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:57:08,495 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:57:08,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:57:08,495 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:57:08,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:57:08,495 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:57:08,496 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:57:08,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:57:08,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:57:08,498 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:57:08,694 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:57:08,700 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:57:09,037 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:57:09,047 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:57:09,048 INFO L302 CfgBuilder]: Removed 8 assume(true) statements. [2023-11-19 07:57:09,056 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:09 BoogieIcfgContainer [2023-11-19 07:57:09,056 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:57:09,061 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:57:09,062 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:57:09,066 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:57:09,067 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:57:07" (1/3) ... [2023-11-19 07:57:09,068 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@139c40c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:57:09, skipping insertion in model container [2023-11-19 07:57:09,069 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:57:08" (2/3) ... [2023-11-19 07:57:09,070 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@139c40c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:57:09, skipping insertion in model container [2023-11-19 07:57:09,071 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:09" (3/3) ... [2023-11-19 07:57:09,073 INFO L112 eAbstractionObserver]: Analyzing ICFG szymanski.i [2023-11-19 07:57:09,083 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:57:09,096 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:57:09,096 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-19 07:57:09,096 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:57:09,222 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:57:09,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 113 transitions, 240 flow [2023-11-19 07:57:09,360 INFO L124 PetriNetUnfolderBase]: 20/111 cut-off events. [2023-11-19 07:57:09,361 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:57:09,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 111 events. 20/111 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 148 event pairs, 0 based on Foata normal form. 0/89 useless extension candidates. Maximal degree in co-relation 83. Up to 3 conditions per place. [2023-11-19 07:57:09,369 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 113 transitions, 240 flow [2023-11-19 07:57:09,375 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 88 places, 101 transitions, 211 flow [2023-11-19 07:57:09,380 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:57:09,391 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 88 places, 101 transitions, 211 flow [2023-11-19 07:57:09,393 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 88 places, 101 transitions, 211 flow [2023-11-19 07:57:09,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 101 transitions, 211 flow [2023-11-19 07:57:09,422 INFO L124 PetriNetUnfolderBase]: 20/101 cut-off events. [2023-11-19 07:57:09,422 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:57:09,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 101 events. 20/101 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 150 event pairs, 0 based on Foata normal form. 0/79 useless extension candidates. Maximal degree in co-relation 83. Up to 3 conditions per place. [2023-11-19 07:57:09,428 INFO L119 LiptonReduction]: Number of co-enabled transitions 3672 [2023-11-19 07:57:11,403 INFO L134 LiptonReduction]: Checked pairs total: 6666 [2023-11-19 07:57:11,403 INFO L136 LiptonReduction]: Total number of compositions: 71 [2023-11-19 07:57:11,432 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:57:11,445 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=LoopHeads, 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;@2528d8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:57:11,445 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-19 07:57:11,452 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:57:11,452 INFO L124 PetriNetUnfolderBase]: 7/30 cut-off events. [2023-11-19 07:57:11,453 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:57:11,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:11,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:11,454 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:57:11,459 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:11,459 INFO L85 PathProgramCache]: Analyzing trace with hash 256442562, now seen corresponding path program 1 times [2023-11-19 07:57:11,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:11,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661998723] [2023-11-19 07:57:11,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:11,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:11,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:11,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:11,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:11,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661998723] [2023-11-19 07:57:11,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661998723] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:11,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:11,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:57:11,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381651472] [2023-11-19 07:57:11,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:11,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:11,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:11,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:11,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:11,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 184 [2023-11-19 07:57:11,817 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 45 transitions, 99 flow. Second operand has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:11,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:11,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 184 [2023-11-19 07:57:11,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:12,070 INFO L124 PetriNetUnfolderBase]: 759/1188 cut-off events. [2023-11-19 07:57:12,070 INFO L125 PetriNetUnfolderBase]: For 38/38 co-relation queries the response was YES. [2023-11-19 07:57:12,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2295 conditions, 1188 events. 759/1188 cut-off events. For 38/38 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 5233 event pairs, 211 based on Foata normal form. 24/782 useless extension candidates. Maximal degree in co-relation 2102. Up to 732 conditions per place. [2023-11-19 07:57:12,088 INFO L140 encePairwiseOnDemand]: 178/184 looper letters, 44 selfloop transitions, 3 changer transitions 2/61 dead transitions. [2023-11-19 07:57:12,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 61 transitions, 232 flow [2023-11-19 07:57:12,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:12,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:57:12,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 335 transitions. [2023-11-19 07:57:12,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6068840579710145 [2023-11-19 07:57:12,115 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 335 transitions. [2023-11-19 07:57:12,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 335 transitions. [2023-11-19 07:57:12,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:12,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 335 transitions. [2023-11-19 07:57:12,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:12,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:12,139 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:12,141 INFO L175 Difference]: Start difference. First operand has 41 places, 45 transitions, 99 flow. Second operand 3 states and 335 transitions. [2023-11-19 07:57:12,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 61 transitions, 232 flow [2023-11-19 07:57:12,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 61 transitions, 225 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:57:12,151 INFO L231 Difference]: Finished difference. Result has 42 places, 45 transitions, 112 flow [2023-11-19 07:57:12,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=42, PETRI_TRANSITIONS=45} [2023-11-19 07:57:12,158 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2023-11-19 07:57:12,158 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 45 transitions, 112 flow [2023-11-19 07:57:12,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.33333333333333) internal successors, (289), 3 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:12,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:12,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:12,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:57:12,160 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr2Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:57:12,160 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:12,160 INFO L85 PathProgramCache]: Analyzing trace with hash 773712790, now seen corresponding path program 1 times [2023-11-19 07:57:12,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:12,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304599514] [2023-11-19 07:57:12,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:12,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:12,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:12,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:12,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:12,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304599514] [2023-11-19 07:57:12,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304599514] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:12,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:12,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:57:12,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812051507] [2023-11-19 07:57:12,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:12,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:12,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:12,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:12,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:12,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 184 [2023-11-19 07:57:12,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 45 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:12,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:12,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 184 [2023-11-19 07:57:12,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:12,524 INFO L124 PetriNetUnfolderBase]: 773/1202 cut-off events. [2023-11-19 07:57:12,524 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2023-11-19 07:57:12,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2484 conditions, 1202 events. 773/1202 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 5066 event pairs, 248 based on Foata normal form. 34/905 useless extension candidates. Maximal degree in co-relation 1500. Up to 811 conditions per place. [2023-11-19 07:57:12,535 INFO L140 encePairwiseOnDemand]: 180/184 looper letters, 41 selfloop transitions, 2 changer transitions 6/60 dead transitions. [2023-11-19 07:57:12,535 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 60 transitions, 241 flow [2023-11-19 07:57:12,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:12,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:57:12,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 333 transitions. [2023-11-19 07:57:12,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6032608695652174 [2023-11-19 07:57:12,542 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 333 transitions. [2023-11-19 07:57:12,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 333 transitions. [2023-11-19 07:57:12,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:12,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 333 transitions. [2023-11-19 07:57:12,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:12,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:12,552 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:12,552 INFO L175 Difference]: Start difference. First operand has 42 places, 45 transitions, 112 flow. Second operand 3 states and 333 transitions. [2023-11-19 07:57:12,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 60 transitions, 241 flow [2023-11-19 07:57:12,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 60 transitions, 235 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:57:12,563 INFO L231 Difference]: Finished difference. Result has 43 places, 45 transitions, 116 flow [2023-11-19 07:57:12,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=116, PETRI_PLACES=43, PETRI_TRANSITIONS=45} [2023-11-19 07:57:12,565 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2023-11-19 07:57:12,565 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 45 transitions, 116 flow [2023-11-19 07:57:12,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.0) internal successors, (291), 3 states have internal predecessors, (291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:12,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:12,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:12,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:57:12,567 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:57:12,568 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:12,568 INFO L85 PathProgramCache]: Analyzing trace with hash -361733534, now seen corresponding path program 1 times [2023-11-19 07:57:12,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:12,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365275755] [2023-11-19 07:57:12,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:12,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:12,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:12,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:12,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:12,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365275755] [2023-11-19 07:57:12,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365275755] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:12,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:12,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:57:12,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540275029] [2023-11-19 07:57:12,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:12,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:57:12,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:12,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:57:12,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:57:12,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 184 [2023-11-19 07:57:12,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 116 flow. Second operand has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:12,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:12,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 184 [2023-11-19 07:57:12,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:13,125 INFO L124 PetriNetUnfolderBase]: 886/1437 cut-off events. [2023-11-19 07:57:13,125 INFO L125 PetriNetUnfolderBase]: For 260/260 co-relation queries the response was YES. [2023-11-19 07:57:13,128 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2993 conditions, 1437 events. 886/1437 cut-off events. For 260/260 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 6513 event pairs, 281 based on Foata normal form. 24/1148 useless extension candidates. Maximal degree in co-relation 1902. Up to 703 conditions per place. [2023-11-19 07:57:13,134 INFO L140 encePairwiseOnDemand]: 167/184 looper letters, 43 selfloop transitions, 6 changer transitions 37/93 dead transitions. [2023-11-19 07:57:13,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 93 transitions, 405 flow [2023-11-19 07:57:13,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:57:13,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:57:13,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 484 transitions. [2023-11-19 07:57:13,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5260869565217391 [2023-11-19 07:57:13,137 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 484 transitions. [2023-11-19 07:57:13,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 484 transitions. [2023-11-19 07:57:13,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:13,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 484 transitions. [2023-11-19 07:57:13,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 96.8) internal successors, (484), 5 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:13,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:13,145 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:13,145 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 116 flow. Second operand 5 states and 484 transitions. [2023-11-19 07:57:13,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 93 transitions, 405 flow [2023-11-19 07:57:13,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 93 transitions, 401 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:57:13,152 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 171 flow [2023-11-19 07:57:13,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=171, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2023-11-19 07:57:13,154 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 8 predicate places. [2023-11-19 07:57:13,155 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 171 flow [2023-11-19 07:57:13,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 81.75) internal successors, (327), 4 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:13,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:13,156 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:13,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:57:13,156 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:57:13,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:13,157 INFO L85 PathProgramCache]: Analyzing trace with hash -1112574306, now seen corresponding path program 2 times [2023-11-19 07:57:13,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:13,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501698068] [2023-11-19 07:57:13,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:13,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:13,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:13,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:13,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:13,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501698068] [2023-11-19 07:57:13,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501698068] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:13,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:13,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:57:13,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46877629] [2023-11-19 07:57:13,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:13,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:57:13,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:13,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:57:13,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:57:13,324 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 184 [2023-11-19 07:57:13,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 171 flow. Second operand has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:13,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:13,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 184 [2023-11-19 07:57:13,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:13,628 INFO L124 PetriNetUnfolderBase]: 698/1227 cut-off events. [2023-11-19 07:57:13,628 INFO L125 PetriNetUnfolderBase]: For 1014/1016 co-relation queries the response was YES. [2023-11-19 07:57:13,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3166 conditions, 1227 events. 698/1227 cut-off events. For 1014/1016 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5844 event pairs, 200 based on Foata normal form. 40/1198 useless extension candidates. Maximal degree in co-relation 2067. Up to 508 conditions per place. [2023-11-19 07:57:13,637 INFO L140 encePairwiseOnDemand]: 167/184 looper letters, 52 selfloop transitions, 21 changer transitions 11/91 dead transitions. [2023-11-19 07:57:13,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 91 transitions, 545 flow [2023-11-19 07:57:13,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:57:13,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:57:13,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 481 transitions. [2023-11-19 07:57:13,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5228260869565218 [2023-11-19 07:57:13,641 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 481 transitions. [2023-11-19 07:57:13,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 481 transitions. [2023-11-19 07:57:13,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:13,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 481 transitions. [2023-11-19 07:57:13,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 96.2) internal successors, (481), 5 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:13,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:13,647 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:13,647 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 171 flow. Second operand 5 states and 481 transitions. [2023-11-19 07:57:13,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 91 transitions, 545 flow [2023-11-19 07:57:13,652 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 91 transitions, 488 flow, removed 28 selfloop flow, removed 1 redundant places. [2023-11-19 07:57:13,655 INFO L231 Difference]: Finished difference. Result has 56 places, 61 transitions, 343 flow [2023-11-19 07:57:13,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=343, PETRI_PLACES=56, PETRI_TRANSITIONS=61} [2023-11-19 07:57:13,656 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 15 predicate places. [2023-11-19 07:57:13,656 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 61 transitions, 343 flow [2023-11-19 07:57:13,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 4 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:13,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:13,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:13,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:57:13,658 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:57:13,658 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:13,658 INFO L85 PathProgramCache]: Analyzing trace with hash -346015334, now seen corresponding path program 3 times [2023-11-19 07:57:13,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:13,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358419946] [2023-11-19 07:57:13,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:13,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:13,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:13,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:13,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:13,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358419946] [2023-11-19 07:57:13,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358419946] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:13,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:13,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:57:13,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129490170] [2023-11-19 07:57:13,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:13,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:57:13,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:13,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:57:13,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:57:13,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 184 [2023-11-19 07:57:13,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 61 transitions, 343 flow. Second operand has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:13,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:13,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 184 [2023-11-19 07:57:13,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:13,926 INFO L124 PetriNetUnfolderBase]: 630/1084 cut-off events. [2023-11-19 07:57:13,927 INFO L125 PetriNetUnfolderBase]: For 1915/1986 co-relation queries the response was YES. [2023-11-19 07:57:13,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3425 conditions, 1084 events. 630/1084 cut-off events. For 1915/1986 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 5137 event pairs, 197 based on Foata normal form. 6/997 useless extension candidates. Maximal degree in co-relation 2821. Up to 812 conditions per place. [2023-11-19 07:57:13,935 INFO L140 encePairwiseOnDemand]: 181/184 looper letters, 51 selfloop transitions, 3 changer transitions 1/73 dead transitions. [2023-11-19 07:57:13,935 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 73 transitions, 522 flow [2023-11-19 07:57:13,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:57:13,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:57:13,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 323 transitions. [2023-11-19 07:57:13,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5851449275362319 [2023-11-19 07:57:13,938 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 323 transitions. [2023-11-19 07:57:13,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 323 transitions. [2023-11-19 07:57:13,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:13,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 323 transitions. [2023-11-19 07:57:13,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:13,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:13,943 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:13,943 INFO L175 Difference]: Start difference. First operand has 56 places, 61 transitions, 343 flow. Second operand 3 states and 323 transitions. [2023-11-19 07:57:13,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 73 transitions, 522 flow [2023-11-19 07:57:13,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 73 transitions, 504 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-11-19 07:57:13,953 INFO L231 Difference]: Finished difference. Result has 59 places, 61 transitions, 340 flow [2023-11-19 07:57:13,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=340, PETRI_PLACES=59, PETRI_TRANSITIONS=61} [2023-11-19 07:57:13,954 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 18 predicate places. [2023-11-19 07:57:13,955 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 61 transitions, 340 flow [2023-11-19 07:57:13,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.33333333333333) internal successors, (292), 3 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:13,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:57:13,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:57:13,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:57:13,956 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr2Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-11-19 07:57:13,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:57:13,957 INFO L85 PathProgramCache]: Analyzing trace with hash 2034827454, now seen corresponding path program 4 times [2023-11-19 07:57:13,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:57:13,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872794234] [2023-11-19 07:57:13,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:57:13,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:57:13,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:57:14,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:57:14,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:57:14,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872794234] [2023-11-19 07:57:14,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872794234] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:57:14,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:57:14,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:57:14,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040562335] [2023-11-19 07:57:14,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:57:14,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:57:14,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:57:14,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:57:14,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:57:14,077 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 184 [2023-11-19 07:57:14,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 61 transitions, 340 flow. Second operand has 4 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:14,078 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:57:14,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 184 [2023-11-19 07:57:14,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:57:14,359 INFO L124 PetriNetUnfolderBase]: 740/1266 cut-off events. [2023-11-19 07:57:14,359 INFO L125 PetriNetUnfolderBase]: For 1843/1911 co-relation queries the response was YES. [2023-11-19 07:57:14,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3944 conditions, 1266 events. 740/1266 cut-off events. For 1843/1911 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5865 event pairs, 235 based on Foata normal form. 50/1281 useless extension candidates. Maximal degree in co-relation 2653. Up to 654 conditions per place. [2023-11-19 07:57:14,365 INFO L140 encePairwiseOnDemand]: 168/184 looper letters, 0 selfloop transitions, 0 changer transitions 103/103 dead transitions. [2023-11-19 07:57:14,366 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 103 transitions, 690 flow [2023-11-19 07:57:14,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:57:14,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:57:14,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 476 transitions. [2023-11-19 07:57:14,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5173913043478261 [2023-11-19 07:57:14,369 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 476 transitions. [2023-11-19 07:57:14,369 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 476 transitions. [2023-11-19 07:57:14,369 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:57:14,370 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 476 transitions. [2023-11-19 07:57:14,373 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 95.2) internal successors, (476), 5 states have internal predecessors, (476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:14,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:14,378 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 184.0) internal successors, (1104), 6 states have internal predecessors, (1104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:14,378 INFO L175 Difference]: Start difference. First operand has 59 places, 61 transitions, 340 flow. Second operand 5 states and 476 transitions. [2023-11-19 07:57:14,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 103 transitions, 690 flow [2023-11-19 07:57:14,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 103 transitions, 671 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-11-19 07:57:14,392 INFO L231 Difference]: Finished difference. Result has 58 places, 0 transitions, 0 flow [2023-11-19 07:57:14,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=184, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=58, PETRI_TRANSITIONS=0} [2023-11-19 07:57:14,395 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 17 predicate places. [2023-11-19 07:57:14,396 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 0 transitions, 0 flow [2023-11-19 07:57:14,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.25) internal successors, (333), 4 states have internal predecessors, (333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:57:14,399 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-11-19 07:57:14,400 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-11-19 07:57:14,400 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-11-19 07:57:14,400 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-11-19 07:57:14,401 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-11-19 07:57:14,401 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-11-19 07:57:14,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:57:14,402 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2023-11-19 07:57:14,407 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 07:57:14,408 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:57:14,413 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:57:14 BasicIcfg [2023-11-19 07:57:14,413 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:57:14,414 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:57:14,414 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:57:14,414 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:57:14,415 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:57:09" (3/4) ... [2023-11-19 07:57:14,416 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 07:57:14,421 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr2 [2023-11-19 07:57:14,421 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thr1 [2023-11-19 07:57:14,427 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2023-11-19 07:57:14,427 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-11-19 07:57:14,428 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 07:57:14,428 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 07:57:14,525 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_063cf11d-1fea-47b3-bd81-c13537aa54a1/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:57:14,525 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_063cf11d-1fea-47b3-bd81-c13537aa54a1/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 07:57:14,525 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:57:14,526 INFO L158 Benchmark]: Toolchain (without parser) took 6941.82ms. Allocated memory was 104.9MB in the beginning and 172.0MB in the end (delta: 67.1MB). Free memory was 59.6MB in the beginning and 93.8MB in the end (delta: -34.1MB). Peak memory consumption was 34.4MB. Max. memory is 16.1GB. [2023-11-19 07:57:14,526 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 104.9MB. Free memory is still 76.1MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:57:14,527 INFO L158 Benchmark]: CACSL2BoogieTranslator took 689.64ms. Allocated memory is still 104.9MB. Free memory was 59.3MB in the beginning and 76.8MB in the end (delta: -17.5MB). Peak memory consumption was 26.8MB. Max. memory is 16.1GB. [2023-11-19 07:57:14,527 INFO L158 Benchmark]: Boogie Procedure Inliner took 75.58ms. Allocated memory was 104.9MB in the beginning and 142.6MB in the end (delta: 37.7MB). Free memory was 76.8MB in the beginning and 115.6MB in the end (delta: -38.9MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. [2023-11-19 07:57:14,528 INFO L158 Benchmark]: Boogie Preprocessor took 46.77ms. Allocated memory is still 142.6MB. Free memory was 115.6MB in the beginning and 114.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:57:14,528 INFO L158 Benchmark]: RCFGBuilder took 647.92ms. Allocated memory is still 142.6MB. Free memory was 114.2MB in the beginning and 99.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2023-11-19 07:57:14,528 INFO L158 Benchmark]: TraceAbstraction took 5351.98ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 98.8MB in the beginning and 98.0MB in the end (delta: 857.9kB). Peak memory consumption was 80.2MB. Max. memory is 16.1GB. [2023-11-19 07:57:14,529 INFO L158 Benchmark]: Witness Printer took 111.55ms. Allocated memory is still 172.0MB. Free memory was 96.9MB in the beginning and 93.8MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 07:57:14,531 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 104.9MB. Free memory is still 76.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 689.64ms. Allocated memory is still 104.9MB. Free memory was 59.3MB in the beginning and 76.8MB in the end (delta: -17.5MB). Peak memory consumption was 26.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 75.58ms. Allocated memory was 104.9MB in the beginning and 142.6MB in the end (delta: 37.7MB). Free memory was 76.8MB in the beginning and 115.6MB in the end (delta: -38.9MB). Peak memory consumption was 4.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 46.77ms. Allocated memory is still 142.6MB. Free memory was 115.6MB in the beginning and 114.2MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 647.92ms. Allocated memory is still 142.6MB. Free memory was 114.2MB in the beginning and 99.6MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * TraceAbstraction took 5351.98ms. Allocated memory was 142.6MB in the beginning and 172.0MB in the end (delta: 29.4MB). Free memory was 98.8MB in the beginning and 98.0MB in the end (delta: 857.9kB). Peak memory consumption was 80.2MB. Max. memory is 16.1GB. * Witness Printer took 111.55ms. Allocated memory is still 172.0MB. Free memory was 96.9MB in the beginning and 93.8MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.0s, 88 PlacesBefore, 41 PlacesAfterwards, 101 TransitionsBefore, 45 TransitionsAfterwards, 3672 CoEnabledTransitionPairs, 4 FixpointIterations, 15 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 18 ConcurrentYvCompositions, 9 ChoiceCompositions, 71 TotalNumberOfCompositions, 6666 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3274, independent: 3089, independent conditional: 0, independent unconditional: 3089, dependent: 185, dependent conditional: 0, dependent unconditional: 185, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1779, independent: 1739, independent conditional: 0, independent unconditional: 1739, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3274, independent: 1350, independent conditional: 0, independent unconditional: 1350, dependent: 145, dependent conditional: 0, dependent unconditional: 145, unknown: 1779, unknown conditional: 0, unknown unconditional: 1779] , Statistics on independence cache: Total cache size (in pairs): 198, Positive cache size: 170, Positive conditional cache size: 0, Positive unconditional cache size: 170, Negative cache size: 28, Negative conditional cache size: 0, Negative unconditional cache size: 28, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 802]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 745]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 150 locations, 6 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: 5.1s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 372 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 244 mSDsluCounter, 67 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 39 mSDsCounter, 84 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 828 IncrementalHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 84 mSolverCounterUnsat, 28 mSDtfsCounter, 828 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=343occurred in iteration=4, InterpolantAutomatonStates: 24, 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, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 92 ConstructedInterpolants, 0 QuantifiedInterpolants, 134 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 07:57:14,569 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_063cf11d-1fea-47b3-bd81-c13537aa54a1/bin/uautomizer-verify-uCwYo4JHxu/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