./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-wmm/safe029_tso.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_85d61d08-8237-496c-bad5-6fb062a3a62a/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d61d08-8237-496c-bad5-6fb062a3a62a/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_85d61d08-8237-496c-bad5-6fb062a3a62a/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d61d08-8237-496c-bad5-6fb062a3a62a/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/safe029_tso.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d61d08-8237-496c-bad5-6fb062a3a62a/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_85d61d08-8237-496c-bad5-6fb062a3a62a/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 ef851e22a0a98929f1b90876fcac5ec793e10efa4691f239ca948c8dc39b94fd --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:40:27,263 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:40:27,349 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d61d08-8237-496c-bad5-6fb062a3a62a/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:40:27,355 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:40:27,356 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:40:27,382 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:40:27,382 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:40:27,383 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:40:27,384 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:40:27,384 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:40:27,385 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:40:27,386 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:40:27,386 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:40:27,387 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:40:27,387 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:40:27,388 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:40:27,388 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:40:27,389 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:40:27,389 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:40:27,390 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:40:27,390 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:40:27,392 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:40:27,393 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:40:27,393 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:40:27,394 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:40:27,395 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:40:27,395 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:40:27,395 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:40:27,396 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:40:27,396 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:40:27,398 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:40:27,398 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:40:27,398 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:40:27,398 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:40:27,398 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:40:27,399 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:40:27,399 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:40:27,399 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:40:27,399 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:40:27,399 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_85d61d08-8237-496c-bad5-6fb062a3a62a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d61d08-8237-496c-bad5-6fb062a3a62a/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ef851e22a0a98929f1b90876fcac5ec793e10efa4691f239ca948c8dc39b94fd [2023-11-19 07:40:27,701 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:40:27,723 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:40:27,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:40:27,727 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:40:27,727 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:40:27,729 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d61d08-8237-496c-bad5-6fb062a3a62a/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread-wmm/safe029_tso.i [2023-11-19 07:40:30,784 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:40:31,156 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:40:31,161 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d61d08-8237-496c-bad5-6fb062a3a62a/sv-benchmarks/c/pthread-wmm/safe029_tso.i [2023-11-19 07:40:31,187 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d61d08-8237-496c-bad5-6fb062a3a62a/bin/uautomizer-verify-uCwYo4JHxu/data/52bd3825b/d2e2a320546649e6bd71b40c08e820c9/FLAG9cac432ee [2023-11-19 07:40:31,206 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d61d08-8237-496c-bad5-6fb062a3a62a/bin/uautomizer-verify-uCwYo4JHxu/data/52bd3825b/d2e2a320546649e6bd71b40c08e820c9 [2023-11-19 07:40:31,213 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:40:31,214 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:40:31,216 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:40:31,217 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:40:31,222 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:40:31,224 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:40:31" (1/1) ... [2023-11-19 07:40:31,226 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a4f732a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:31, skipping insertion in model container [2023-11-19 07:40:31,226 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:40:31" (1/1) ... [2023-11-19 07:40:31,292 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:40:31,526 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_85d61d08-8237-496c-bad5-6fb062a3a62a/sv-benchmarks/c/pthread-wmm/safe029_tso.i[945,958] [2023-11-19 07:40:31,687 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:40:31,698 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:40:31,710 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_85d61d08-8237-496c-bad5-6fb062a3a62a/sv-benchmarks/c/pthread-wmm/safe029_tso.i[945,958] [2023-11-19 07:40:31,738 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:40:31,770 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:40:31,770 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:40:31,778 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:40:31,779 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:31 WrapperNode [2023-11-19 07:40:31,779 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:40:31,780 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:40:31,781 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:40:31,781 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:40:31,789 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:31" (1/1) ... [2023-11-19 07:40:31,803 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:31" (1/1) ... [2023-11-19 07:40:31,826 INFO L138 Inliner]: procedures = 175, calls = 40, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 56 [2023-11-19 07:40:31,826 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:40:31,827 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:40:31,828 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:40:31,828 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:40:31,837 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:31" (1/1) ... [2023-11-19 07:40:31,837 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:31" (1/1) ... [2023-11-19 07:40:31,840 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:31" (1/1) ... [2023-11-19 07:40:31,841 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:31" (1/1) ... [2023-11-19 07:40:31,847 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:31" (1/1) ... [2023-11-19 07:40:31,849 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:31" (1/1) ... [2023-11-19 07:40:31,851 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:31" (1/1) ... [2023-11-19 07:40:31,852 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:31" (1/1) ... [2023-11-19 07:40:31,856 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:40:31,857 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:40:31,857 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:40:31,857 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:40:31,858 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:31" (1/1) ... [2023-11-19 07:40:31,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:40:31,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d61d08-8237-496c-bad5-6fb062a3a62a/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:31,894 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d61d08-8237-496c-bad5-6fb062a3a62a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:40:31,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d61d08-8237-496c-bad5-6fb062a3a62a/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:40:31,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:40:31,944 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:40:31,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:40:31,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:40:31,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:40:31,945 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-19 07:40:31,945 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-19 07:40:31,945 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-19 07:40:31,946 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-19 07:40:31,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:40:31,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:40:31,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:40:31,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:40:31,950 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 07:40:32,122 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:40:32,125 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:40:32,274 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:40:32,283 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:40:32,283 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-19 07:40:32,287 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:40:32 BoogieIcfgContainer [2023-11-19 07:40:32,287 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:40:32,290 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:40:32,290 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:40:32,294 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:40:32,294 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:40:31" (1/3) ... [2023-11-19 07:40:32,295 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a33b2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:40:32, skipping insertion in model container [2023-11-19 07:40:32,295 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:31" (2/3) ... [2023-11-19 07:40:32,295 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a33b2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:40:32, skipping insertion in model container [2023-11-19 07:40:32,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:40:32" (3/3) ... [2023-11-19 07:40:32,297 INFO L112 eAbstractionObserver]: Analyzing ICFG safe029_tso.i [2023-11-19 07:40:32,306 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:40:32,318 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:40:32,318 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:40:32,318 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:40:32,377 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:40:32,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 72 transitions, 152 flow [2023-11-19 07:40:32,467 INFO L124 PetriNetUnfolderBase]: 2/70 cut-off events. [2023-11-19 07:40:32,467 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:40:32,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77 conditions, 70 events. 2/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 42 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2023-11-19 07:40:32,472 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 72 transitions, 152 flow [2023-11-19 07:40:32,476 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 63 places, 57 transitions, 120 flow [2023-11-19 07:40:32,480 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:40:32,491 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 63 places, 57 transitions, 120 flow [2023-11-19 07:40:32,497 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 63 places, 57 transitions, 120 flow [2023-11-19 07:40:32,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 57 transitions, 120 flow [2023-11-19 07:40:32,524 INFO L124 PetriNetUnfolderBase]: 1/57 cut-off events. [2023-11-19 07:40:32,525 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:40:32,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 57 events. 1/57 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2023-11-19 07:40:32,528 INFO L119 LiptonReduction]: Number of co-enabled transitions 700 [2023-11-19 07:40:34,565 INFO L134 LiptonReduction]: Checked pairs total: 1191 [2023-11-19 07:40:34,566 INFO L136 LiptonReduction]: Total number of compositions: 51 [2023-11-19 07:40:34,599 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:40:34,616 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;@116d3af3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:40:34,617 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-19 07:40:34,627 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:40:34,630 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-11-19 07:40:34,630 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:40:34,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:34,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:40:34,632 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-19 07:40:34,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:34,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1243364377, now seen corresponding path program 1 times [2023-11-19 07:40:34,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:34,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346156196] [2023-11-19 07:40:34,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:34,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:35,212 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 07:40:35,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:35,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346156196] [2023-11-19 07:40:35,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346156196] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:35,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:35,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:40:35,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774074687] [2023-11-19 07:40:35,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:35,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:35,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:35,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:35,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:35,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 123 [2023-11-19 07:40:35,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 13 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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 07:40:35,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:35,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 123 [2023-11-19 07:40:35,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:35,406 INFO L124 PetriNetUnfolderBase]: 63/131 cut-off events. [2023-11-19 07:40:35,406 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:40:35,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276 conditions, 131 events. 63/131 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 459 event pairs, 33 based on Foata normal form. 13/144 useless extension candidates. Maximal degree in co-relation 266. Up to 85 conditions per place. [2023-11-19 07:40:35,409 INFO L140 encePairwiseOnDemand]: 116/123 looper letters, 16 selfloop transitions, 5 changer transitions 0/21 dead transitions. [2023-11-19 07:40:35,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 21 transitions, 93 flow [2023-11-19 07:40:35,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:35,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:40:35,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 207 transitions. [2023-11-19 07:40:35,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5609756097560976 [2023-11-19 07:40:35,423 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 207 transitions. [2023-11-19 07:40:35,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 207 transitions. [2023-11-19 07:40:35,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:35,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 207 transitions. [2023-11-19 07:40:35,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 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 07:40:35,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:35,438 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:35,440 INFO L175 Difference]: Start difference. First operand has 19 places, 13 transitions, 32 flow. Second operand 3 states and 207 transitions. [2023-11-19 07:40:35,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 21 transitions, 93 flow [2023-11-19 07:40:35,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 21 transitions, 90 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:40:35,446 INFO L231 Difference]: Finished difference. Result has 21 places, 16 transitions, 66 flow [2023-11-19 07:40:35,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=28, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=12, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=21, PETRI_TRANSITIONS=16} [2023-11-19 07:40:35,452 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 2 predicate places. [2023-11-19 07:40:35,452 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 16 transitions, 66 flow [2023-11-19 07:40:35,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 63.0) internal successors, (189), 3 states have internal predecessors, (189), 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 07:40:35,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:35,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:35,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:40:35,453 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-19 07:40:35,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:35,454 INFO L85 PathProgramCache]: Analyzing trace with hash 110409387, now seen corresponding path program 1 times [2023-11-19 07:40:35,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:35,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289600908] [2023-11-19 07:40:35,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:35,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:35,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:35,598 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 07:40:35,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:35,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289600908] [2023-11-19 07:40:35,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289600908] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:35,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:35,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:40:35,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647329957] [2023-11-19 07:40:35,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:35,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:40:35,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:35,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:40:35,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:40:35,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 123 [2023-11-19 07:40:35,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 16 transitions, 66 flow. Second operand has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 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 07:40:35,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:35,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 123 [2023-11-19 07:40:35,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:35,692 INFO L124 PetriNetUnfolderBase]: 60/125 cut-off events. [2023-11-19 07:40:35,693 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2023-11-19 07:40:35,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 371 conditions, 125 events. 60/125 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 401 event pairs, 11 based on Foata normal form. 1/126 useless extension candidates. Maximal degree in co-relation 359. Up to 78 conditions per place. [2023-11-19 07:40:35,697 INFO L140 encePairwiseOnDemand]: 117/123 looper letters, 17 selfloop transitions, 8 changer transitions 0/25 dead transitions. [2023-11-19 07:40:35,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 25 transitions, 148 flow [2023-11-19 07:40:35,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:40:35,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:40:35,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 269 transitions. [2023-11-19 07:40:35,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5467479674796748 [2023-11-19 07:40:35,708 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 269 transitions. [2023-11-19 07:40:35,708 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 269 transitions. [2023-11-19 07:40:35,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:35,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 269 transitions. [2023-11-19 07:40:35,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 67.25) internal successors, (269), 4 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:35,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 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 07:40:35,721 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 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 07:40:35,721 INFO L175 Difference]: Start difference. First operand has 21 places, 16 transitions, 66 flow. Second operand 4 states and 269 transitions. [2023-11-19 07:40:35,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 25 transitions, 148 flow [2023-11-19 07:40:35,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 25 transitions, 132 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:40:35,725 INFO L231 Difference]: Finished difference. Result has 24 places, 19 transitions, 97 flow [2023-11-19 07:40:35,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=24, PETRI_TRANSITIONS=19} [2023-11-19 07:40:35,728 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 5 predicate places. [2023-11-19 07:40:35,728 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 19 transitions, 97 flow [2023-11-19 07:40:35,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.75) internal successors, (251), 4 states have internal predecessors, (251), 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 07:40:35,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:35,735 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:35,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:40:35,735 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-19 07:40:35,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:35,740 INFO L85 PathProgramCache]: Analyzing trace with hash 110409108, now seen corresponding path program 1 times [2023-11-19 07:40:35,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:35,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116726656] [2023-11-19 07:40:35,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:35,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:35,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:35,906 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 07:40:35,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:35,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116726656] [2023-11-19 07:40:35,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116726656] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:35,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:35,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:40:35,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113327383] [2023-11-19 07:40:35,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:35,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:35,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:35,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:35,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:35,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 123 [2023-11-19 07:40:35,922 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 19 transitions, 97 flow. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 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 07:40:35,922 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:35,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 123 [2023-11-19 07:40:35,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:35,987 INFO L124 PetriNetUnfolderBase]: 50/112 cut-off events. [2023-11-19 07:40:35,987 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2023-11-19 07:40:35,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 341 conditions, 112 events. 50/112 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 350 event pairs, 13 based on Foata normal form. 1/113 useless extension candidates. Maximal degree in co-relation 327. Up to 89 conditions per place. [2023-11-19 07:40:35,992 INFO L140 encePairwiseOnDemand]: 119/123 looper letters, 16 selfloop transitions, 4 changer transitions 0/23 dead transitions. [2023-11-19 07:40:35,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 23 transitions, 152 flow [2023-11-19 07:40:35,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:35,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:40:35,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 210 transitions. [2023-11-19 07:40:35,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5691056910569106 [2023-11-19 07:40:35,995 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 210 transitions. [2023-11-19 07:40:35,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 210 transitions. [2023-11-19 07:40:35,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:35,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 210 transitions. [2023-11-19 07:40:35,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 70.0) internal successors, (210), 3 states have internal predecessors, (210), 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 07:40:36,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:36,001 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:36,001 INFO L175 Difference]: Start difference. First operand has 24 places, 19 transitions, 97 flow. Second operand 3 states and 210 transitions. [2023-11-19 07:40:36,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 23 transitions, 152 flow [2023-11-19 07:40:36,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 23 transitions, 152 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:40:36,007 INFO L231 Difference]: Finished difference. Result has 27 places, 20 transitions, 120 flow [2023-11-19 07:40:36,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=27, PETRI_TRANSITIONS=20} [2023-11-19 07:40:36,009 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 8 predicate places. [2023-11-19 07:40:36,012 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 120 flow [2023-11-19 07:40:36,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 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 07:40:36,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:36,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:36,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 07:40:36,015 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-19 07:40:36,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:36,016 INFO L85 PathProgramCache]: Analyzing trace with hash -872277168, now seen corresponding path program 1 times [2023-11-19 07:40:36,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:36,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116810752] [2023-11-19 07:40:36,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:36,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:36,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:36,169 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 07:40:36,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:36,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116810752] [2023-11-19 07:40:36,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116810752] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:36,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:36,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:40:36,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088651357] [2023-11-19 07:40:36,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:36,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:36,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:36,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:36,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:36,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 123 [2023-11-19 07:40:36,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:36,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:36,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 123 [2023-11-19 07:40:36,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:36,222 INFO L124 PetriNetUnfolderBase]: 20/61 cut-off events. [2023-11-19 07:40:36,222 INFO L125 PetriNetUnfolderBase]: For 69/70 co-relation queries the response was YES. [2023-11-19 07:40:36,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 61 events. 20/61 cut-off events. For 69/70 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 167 event pairs, 3 based on Foata normal form. 10/70 useless extension candidates. Maximal degree in co-relation 196. Up to 39 conditions per place. [2023-11-19 07:40:36,224 INFO L140 encePairwiseOnDemand]: 119/123 looper letters, 17 selfloop transitions, 3 changer transitions 6/28 dead transitions. [2023-11-19 07:40:36,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 28 transitions, 207 flow [2023-11-19 07:40:36,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:36,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:40:36,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 211 transitions. [2023-11-19 07:40:36,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5718157181571816 [2023-11-19 07:40:36,226 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 211 transitions. [2023-11-19 07:40:36,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 211 transitions. [2023-11-19 07:40:36,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:36,227 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 211 transitions. [2023-11-19 07:40:36,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 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 07:40:36,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:36,230 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:36,230 INFO L175 Difference]: Start difference. First operand has 27 places, 20 transitions, 120 flow. Second operand 3 states and 211 transitions. [2023-11-19 07:40:36,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 28 transitions, 207 flow [2023-11-19 07:40:36,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 28 transitions, 186 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-19 07:40:36,233 INFO L231 Difference]: Finished difference. Result has 27 places, 18 transitions, 101 flow [2023-11-19 07:40:36,233 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=27, PETRI_TRANSITIONS=18} [2023-11-19 07:40:36,234 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 8 predicate places. [2023-11-19 07:40:36,235 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 18 transitions, 101 flow [2023-11-19 07:40:36,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:36,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:36,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:36,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:40:36,236 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-19 07:40:36,237 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:36,237 INFO L85 PathProgramCache]: Analyzing trace with hash -472594578, now seen corresponding path program 1 times [2023-11-19 07:40:36,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:36,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101598226] [2023-11-19 07:40:36,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:36,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:36,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:36,347 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 07:40:36,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:36,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101598226] [2023-11-19 07:40:36,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101598226] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:36,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:36,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:40:36,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091306307] [2023-11-19 07:40:36,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:36,349 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:40:36,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:36,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:40:36,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:40:36,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 123 [2023-11-19 07:40:36,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 18 transitions, 101 flow. Second operand has 4 states, 4 states have (on average 66.25) internal successors, (265), 4 states have internal predecessors, (265), 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 07:40:36,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:36,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 123 [2023-11-19 07:40:36,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:36,394 INFO L124 PetriNetUnfolderBase]: 9/32 cut-off events. [2023-11-19 07:40:36,395 INFO L125 PetriNetUnfolderBase]: For 27/28 co-relation queries the response was YES. [2023-11-19 07:40:36,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 32 events. 9/32 cut-off events. For 27/28 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 62 event pairs, 2 based on Foata normal form. 7/38 useless extension candidates. Maximal degree in co-relation 112. Up to 14 conditions per place. [2023-11-19 07:40:36,396 INFO L140 encePairwiseOnDemand]: 119/123 looper letters, 0 selfloop transitions, 0 changer transitions 22/22 dead transitions. [2023-11-19 07:40:36,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 22 transitions, 161 flow [2023-11-19 07:40:36,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:40:36,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:40:36,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 274 transitions. [2023-11-19 07:40:36,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.556910569105691 [2023-11-19 07:40:36,398 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 274 transitions. [2023-11-19 07:40:36,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 274 transitions. [2023-11-19 07:40:36,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:36,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 274 transitions. [2023-11-19 07:40:36,400 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 68.5) internal successors, (274), 4 states have internal predecessors, (274), 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 07:40:36,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 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 07:40:36,403 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 123.0) internal successors, (615), 5 states have internal predecessors, (615), 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 07:40:36,403 INFO L175 Difference]: Start difference. First operand has 27 places, 18 transitions, 101 flow. Second operand 4 states and 274 transitions. [2023-11-19 07:40:36,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 22 transitions, 161 flow [2023-11-19 07:40:36,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 22 transitions, 146 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:40:36,405 INFO L231 Difference]: Finished difference. Result has 27 places, 0 transitions, 0 flow [2023-11-19 07:40:36,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=123, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=27, PETRI_TRANSITIONS=0} [2023-11-19 07:40:36,406 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 8 predicate places. [2023-11-19 07:40:36,407 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 0 transitions, 0 flow [2023-11-19 07:40:36,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 66.25) internal successors, (265), 4 states have internal predecessors, (265), 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 07:40:36,410 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-11-19 07:40:36,411 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-11-19 07:40:36,411 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-11-19 07:40:36,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:40:36,412 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-19 07:40:36,416 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-19 07:40:36,416 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-19 07:40:36,421 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:40:36 BasicIcfg [2023-11-19 07:40:36,421 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-19 07:40:36,422 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-19 07:40:36,422 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-19 07:40:36,422 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-19 07:40:36,423 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:40:32" (3/4) ... [2023-11-19 07:40:36,425 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-19 07:40:36,430 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-19 07:40:36,431 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-19 07:40:36,435 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-11-19 07:40:36,436 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-19 07:40:36,436 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-19 07:40:36,436 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-19 07:40:36,528 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d61d08-8237-496c-bad5-6fb062a3a62a/bin/uautomizer-verify-uCwYo4JHxu/witness.graphml [2023-11-19 07:40:36,529 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d61d08-8237-496c-bad5-6fb062a3a62a/bin/uautomizer-verify-uCwYo4JHxu/witness.yml [2023-11-19 07:40:36,529 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-19 07:40:36,530 INFO L158 Benchmark]: Toolchain (without parser) took 5315.39ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 122.4MB in the beginning and 122.4MB in the end (delta: 40.3kB). Peak memory consumption was 32.1MB. Max. memory is 16.1GB. [2023-11-19 07:40:36,530 INFO L158 Benchmark]: CDTParser took 0.28ms. Allocated memory is still 130.0MB. Free memory is still 97.2MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:40:36,531 INFO L158 Benchmark]: CACSL2BoogieTranslator took 563.20ms. Allocated memory is still 159.4MB. Free memory was 121.8MB in the beginning and 114.7MB in the end (delta: 7.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-19 07:40:36,531 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.39ms. Allocated memory is still 159.4MB. Free memory was 114.7MB in the beginning and 113.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-19 07:40:36,532 INFO L158 Benchmark]: Boogie Preprocessor took 28.60ms. Allocated memory is still 159.4MB. Free memory was 113.2MB in the beginning and 111.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-11-19 07:40:36,532 INFO L158 Benchmark]: RCFGBuilder took 430.89ms. Allocated memory is still 159.4MB. Free memory was 111.8MB in the beginning and 99.3MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-19 07:40:36,533 INFO L158 Benchmark]: TraceAbstraction took 4131.39ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 98.6MB in the beginning and 127.6MB in the end (delta: -29.0MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. [2023-11-19 07:40:36,533 INFO L158 Benchmark]: Witness Printer took 107.19ms. Allocated memory is still 192.9MB. Free memory was 127.6MB in the beginning and 122.4MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-19 07:40:36,536 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28ms. Allocated memory is still 130.0MB. Free memory is still 97.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 563.20ms. Allocated memory is still 159.4MB. Free memory was 121.8MB in the beginning and 114.7MB in the end (delta: 7.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.39ms. Allocated memory is still 159.4MB. Free memory was 114.7MB in the beginning and 113.2MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.60ms. Allocated memory is still 159.4MB. Free memory was 113.2MB in the beginning and 111.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 430.89ms. Allocated memory is still 159.4MB. Free memory was 111.8MB in the beginning and 99.3MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4131.39ms. Allocated memory was 159.4MB in the beginning and 192.9MB in the end (delta: 33.6MB). Free memory was 98.6MB in the beginning and 127.6MB in the end (delta: -29.0MB). Peak memory consumption was 6.2MB. Max. memory is 16.1GB. * Witness Printer took 107.19ms. Allocated memory is still 192.9MB. Free memory was 127.6MB in the beginning and 122.4MB in the end (delta: 5.2MB). 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: 2.1s, 63 PlacesBefore, 19 PlacesAfterwards, 57 TransitionsBefore, 13 TransitionsAfterwards, 700 CoEnabledTransitionPairs, 6 FixpointIterations, 16 TrivialSequentialCompositions, 28 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 7 ConcurrentYvCompositions, 0 ChoiceCompositions, 51 TotalNumberOfCompositions, 1191 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 767, independent: 702, independent conditional: 0, independent unconditional: 702, dependent: 65, dependent conditional: 0, dependent unconditional: 65, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 397, independent: 372, independent conditional: 0, independent unconditional: 372, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 767, independent: 330, independent conditional: 0, independent unconditional: 330, dependent: 40, dependent conditional: 0, dependent unconditional: 40, unknown: 397, unknown conditional: 0, unknown unconditional: 397] , Statistics on independence cache: Total cache size (in pairs): 21, Positive cache size: 15, Positive conditional cache size: 0, Positive unconditional cache size: 15, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: 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, 89 locations, 3 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: 4.0s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 58 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 28 mSDsluCounter, 14 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 143 IncrementalHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 11 mSDtfsCounter, 143 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred in iteration=3, InterpolantAutomatonStates: 17, 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, 0.8s InterpolantComputationTime, 38 NumberOfCodeBlocks, 38 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 127 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-19 07:40:36,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85d61d08-8237-496c-bad5-6fb062a3a62a/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