./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows 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_89c41e85-c477-4611-9eb3-d0a9a1254574/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c41e85-c477-4611-9eb3-d0a9a1254574/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_89c41e85-c477-4611-9eb3-d0a9a1254574/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c41e85-c477-4611-9eb3-d0a9a1254574/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c41e85-c477-4611-9eb3-d0a9a1254574/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c41e85-c477-4611-9eb3-d0a9a1254574/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e5124dd4a5a155d8a4e322a35428820633f9eccdd993e14120e650d1ba1fbebe --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:58:56,158 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:58:56,290 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c41e85-c477-4611-9eb3-d0a9a1254574/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:58:56,296 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:58:56,297 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:58:56,340 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:58:56,342 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:58:56,343 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:58:56,344 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:58:56,351 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:58:56,352 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:58:56,353 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:58:56,353 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:58:56,355 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:58:56,356 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:58:56,356 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:58:56,357 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:58:56,357 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:58:56,358 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:58:56,358 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:58:56,369 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:58:56,370 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:58:56,370 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:58:56,371 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:58:56,371 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:58:56,372 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:58:56,372 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:58:56,373 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:58:56,374 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:58:56,374 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:58:56,376 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:58:56,376 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:58:56,376 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:58:56,377 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:58:56,377 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:58:56,377 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:58:56,377 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:58:56,378 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:58:56,378 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:58:56,378 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:58:56,378 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:58:56,379 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_89c41e85-c477-4611-9eb3-d0a9a1254574/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c41e85-c477-4611-9eb3-d0a9a1254574/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e5124dd4a5a155d8a4e322a35428820633f9eccdd993e14120e650d1ba1fbebe [2023-11-19 07:58:56,650 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:58:56,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:58:56,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:58:56,684 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:58:56,685 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:58:56,687 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c41e85-c477-4611-9eb3-d0a9a1254574/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c [2023-11-19 07:59:00,640 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:59:00,883 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:59:00,884 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c41e85-c477-4611-9eb3-d0a9a1254574/sv-benchmarks/c/weaver/popl20-more-buffer-mult.wvr.c [2023-11-19 07:59:00,894 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c41e85-c477-4611-9eb3-d0a9a1254574/bin/uautomizer-verify-uCwYo4JHxu/data/2bef3a4e6/feae6a866b544f33bc890e97cc5c860a/FLAG2aef025e3 [2023-11-19 07:59:00,910 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c41e85-c477-4611-9eb3-d0a9a1254574/bin/uautomizer-verify-uCwYo4JHxu/data/2bef3a4e6/feae6a866b544f33bc890e97cc5c860a [2023-11-19 07:59:00,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:59:00,915 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:59:00,917 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:59:00,918 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:59:00,930 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:59:00,930 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:59:00" (1/1) ... [2023-11-19 07:59:00,932 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@188384ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:00, skipping insertion in model container [2023-11-19 07:59:00,932 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:59:00" (1/1) ... [2023-11-19 07:59:00,988 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:59:01,265 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:59:01,276 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:59:01,314 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:59:01,324 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:59:01,325 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:59:01,333 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:59:01,334 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:01 WrapperNode [2023-11-19 07:59:01,334 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:59:01,336 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:59:01,336 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:59:01,336 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:59:01,345 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:01" (1/1) ... [2023-11-19 07:59:01,357 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:01" (1/1) ... [2023-11-19 07:59:01,404 INFO L138 Inliner]: procedures = 27, calls = 81, calls flagged for inlining = 19, calls inlined = 23, statements flattened = 368 [2023-11-19 07:59:01,404 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:59:01,405 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:59:01,405 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:59:01,406 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:59:01,419 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:01" (1/1) ... [2023-11-19 07:59:01,419 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:01" (1/1) ... [2023-11-19 07:59:01,426 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:01" (1/1) ... [2023-11-19 07:59:01,426 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:01" (1/1) ... [2023-11-19 07:59:01,457 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:01" (1/1) ... [2023-11-19 07:59:01,463 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:01" (1/1) ... [2023-11-19 07:59:01,467 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:01" (1/1) ... [2023-11-19 07:59:01,480 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:01" (1/1) ... [2023-11-19 07:59:01,486 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:59:01,487 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:59:01,487 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:59:01,487 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:59:01,488 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:01" (1/1) ... [2023-11-19 07:59:01,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:59:01,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c41e85-c477-4611-9eb3-d0a9a1254574/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:01,538 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c41e85-c477-4611-9eb3-d0a9a1254574/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:59:01,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:59:01,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:59:01,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:59:01,586 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:59:01,586 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:59:01,586 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:59:01,592 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:59:01,592 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:59:01,592 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 07:59:01,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c41e85-c477-4611-9eb3-d0a9a1254574/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:59:01,593 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 07:59:01,594 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-19 07:59:01,594 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-19 07:59:01,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:59:01,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:59:01,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:59:01,598 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:59:01,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:59:01,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:59:01,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:59:01,600 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 07:59:01,799 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:59:01,804 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:59:02,609 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:59:03,317 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:59:03,317 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-19 07:59:03,326 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:59:03 BoogieIcfgContainer [2023-11-19 07:59:03,326 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:59:03,329 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:59:03,329 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:59:03,332 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:59:03,333 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:59:00" (1/3) ... [2023-11-19 07:59:03,333 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@122fceca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:59:03, skipping insertion in model container [2023-11-19 07:59:03,334 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:59:01" (2/3) ... [2023-11-19 07:59:03,334 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@122fceca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:59:03, skipping insertion in model container [2023-11-19 07:59:03,334 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:59:03" (3/3) ... [2023-11-19 07:59:03,340 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult.wvr.c [2023-11-19 07:59:03,388 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:59:03,408 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:59:03,424 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2023-11-19 07:59:03,424 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:59:03,775 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-19 07:59:03,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 272 places, 299 transitions, 626 flow [2023-11-19 07:59:04,012 INFO L124 PetriNetUnfolderBase]: 40/295 cut-off events. [2023-11-19 07:59:04,012 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-19 07:59:04,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312 conditions, 295 events. 40/295 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 343 event pairs, 0 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 228. Up to 4 conditions per place. [2023-11-19 07:59:04,022 INFO L82 GeneralOperation]: Start removeDead. Operand has 272 places, 299 transitions, 626 flow [2023-11-19 07:59:04,041 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 243 places, 269 transitions, 559 flow [2023-11-19 07:59:04,046 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:59:04,062 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 243 places, 269 transitions, 559 flow [2023-11-19 07:59:04,067 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 243 places, 269 transitions, 559 flow [2023-11-19 07:59:04,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 243 places, 269 transitions, 559 flow [2023-11-19 07:59:04,210 INFO L124 PetriNetUnfolderBase]: 39/269 cut-off events. [2023-11-19 07:59:04,210 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:59:04,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 269 events. 39/269 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 320 event pairs, 0 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 228. Up to 4 conditions per place. [2023-11-19 07:59:04,234 INFO L119 LiptonReduction]: Number of co-enabled transitions 7944 [2023-11-19 07:59:22,550 INFO L134 LiptonReduction]: Checked pairs total: 12672 [2023-11-19 07:59:22,550 INFO L136 LiptonReduction]: Total number of compositions: 291 [2023-11-19 07:59:22,566 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:59:22,573 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;@3c09b0a1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:59:22,573 INFO L358 AbstractCegarLoop]: Starting to check reachability of 60 error locations. [2023-11-19 07:59:22,576 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:59:22,577 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-19 07:59:22,577 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:59:22,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:59:22,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:59:22,578 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 07:59:22,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:22,583 INFO L85 PathProgramCache]: Analyzing trace with hash 49406, now seen corresponding path program 1 times [2023-11-19 07:59:22,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:22,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587291681] [2023-11-19 07:59:22,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:22,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:22,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:23,083 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 07:59:23,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:23,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587291681] [2023-11-19 07:59:23,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587291681] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:23,085 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:23,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:59:23,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026235116] [2023-11-19 07:59:23,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:23,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:59:23,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:23,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:59:23,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:59:23,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 590 [2023-11-19 07:59:23,194 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 65 transitions, 151 flow. Second operand has 3 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:23,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:59:23,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 590 [2023-11-19 07:59:23,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:59:33,170 INFO L124 PetriNetUnfolderBase]: 42614/55741 cut-off events. [2023-11-19 07:59:33,170 INFO L125 PetriNetUnfolderBase]: For 2449/2449 co-relation queries the response was YES. [2023-11-19 07:59:33,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112323 conditions, 55741 events. 42614/55741 cut-off events. For 2449/2449 co-relation queries the response was YES. Maximal size of possible extension queue 3520. Compared 305815 event pairs, 38274 based on Foata normal form. 0/24021 useless extension candidates. Maximal degree in co-relation 99484. Up to 54479 conditions per place. [2023-11-19 07:59:33,681 INFO L140 encePairwiseOnDemand]: 573/590 looper letters, 54 selfloop transitions, 5 changer transitions 0/61 dead transitions. [2023-11-19 07:59:33,681 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 61 transitions, 261 flow [2023-11-19 07:59:33,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:59:33,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:59:33,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 713 transitions. [2023-11-19 07:59:33,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40282485875706214 [2023-11-19 07:59:33,708 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 713 transitions. [2023-11-19 07:59:33,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 713 transitions. [2023-11-19 07:59:33,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:59:33,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 713 transitions. [2023-11-19 07:59:33,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 237.66666666666666) internal successors, (713), 3 states have internal predecessors, (713), 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 07:59:33,735 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 590.0) internal successors, (2360), 4 states have internal predecessors, (2360), 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 07:59:33,737 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 590.0) internal successors, (2360), 4 states have internal predecessors, (2360), 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 07:59:33,739 INFO L175 Difference]: Start difference. First operand has 72 places, 65 transitions, 151 flow. Second operand 3 states and 713 transitions. [2023-11-19 07:59:33,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 61 transitions, 261 flow [2023-11-19 07:59:34,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 61 transitions, 248 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-19 07:59:34,354 INFO L231 Difference]: Finished difference. Result has 61 places, 61 transitions, 166 flow [2023-11-19 07:59:34,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=590, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=61, PETRI_TRANSITIONS=61} [2023-11-19 07:59:34,360 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -11 predicate places. [2023-11-19 07:59:34,361 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 61 transitions, 166 flow [2023-11-19 07:59:34,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:59:34,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:59:34,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:59:34,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:59:34,363 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 07:59:34,363 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:34,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1533903, now seen corresponding path program 1 times [2023-11-19 07:59:34,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:34,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113939184] [2023-11-19 07:59:34,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:34,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:34,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:34,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:34,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:34,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113939184] [2023-11-19 07:59:34,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113939184] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:59:34,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031284553] [2023-11-19 07:59:34,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:34,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:34,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c41e85-c477-4611-9eb3-d0a9a1254574/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:59:34,470 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c41e85-c477-4611-9eb3-d0a9a1254574/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:59:34,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c41e85-c477-4611-9eb3-d0a9a1254574/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:59:34,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:34,651 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:59:34,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:59:34,698 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:34,698 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:59:34,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:59:34,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031284553] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:59:34,725 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:59:34,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-19 07:59:34,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319202976] [2023-11-19 07:59:34,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:59:34,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:59:34,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:34,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:59:34,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:59:34,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 590 [2023-11-19 07:59:34,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 61 transitions, 166 flow. Second operand has 7 states, 7 states have (on average 215.14285714285714) internal successors, (1506), 7 states have internal predecessors, (1506), 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 07:59:34,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:59:34,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 590 [2023-11-19 07:59:34,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:59:41,978 INFO L124 PetriNetUnfolderBase]: 42626/55759 cut-off events. [2023-11-19 07:59:41,978 INFO L125 PetriNetUnfolderBase]: For 567/567 co-relation queries the response was YES. [2023-11-19 07:59:42,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111506 conditions, 55759 events. 42626/55759 cut-off events. For 567/567 co-relation queries the response was YES. Maximal size of possible extension queue 3520. Compared 305928 event pairs, 38274 based on Foata normal form. 0/24032 useless extension candidates. Maximal degree in co-relation 111401. Up to 54480 conditions per place. [2023-11-19 07:59:42,338 INFO L140 encePairwiseOnDemand]: 581/590 looper letters, 52 selfloop transitions, 25 changer transitions 0/79 dead transitions. [2023-11-19 07:59:42,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 79 transitions, 398 flow [2023-11-19 07:59:42,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:59:42,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:59:42,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1581 transitions. [2023-11-19 07:59:42,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38280871670702177 [2023-11-19 07:59:42,353 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1581 transitions. [2023-11-19 07:59:42,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1581 transitions. [2023-11-19 07:59:42,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:59:42,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1581 transitions. [2023-11-19 07:59:42,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 225.85714285714286) internal successors, (1581), 7 states have internal predecessors, (1581), 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 07:59:42,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 590.0) internal successors, (4720), 8 states have internal predecessors, (4720), 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 07:59:42,375 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 590.0) internal successors, (4720), 8 states have internal predecessors, (4720), 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 07:59:42,375 INFO L175 Difference]: Start difference. First operand has 61 places, 61 transitions, 166 flow. Second operand 7 states and 1581 transitions. [2023-11-19 07:59:42,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 79 transitions, 398 flow [2023-11-19 07:59:42,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 79 transitions, 382 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:59:42,380 INFO L231 Difference]: Finished difference. Result has 68 places, 79 transitions, 320 flow [2023-11-19 07:59:42,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=590, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=320, PETRI_PLACES=68, PETRI_TRANSITIONS=79} [2023-11-19 07:59:42,382 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -4 predicate places. [2023-11-19 07:59:42,382 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 79 transitions, 320 flow [2023-11-19 07:59:42,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 215.14285714285714) internal successors, (1506), 7 states have internal predecessors, (1506), 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 07:59:42,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:59:42,384 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1] [2023-11-19 07:59:42,411 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c41e85-c477-4611-9eb3-d0a9a1254574/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:59:42,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89c41e85-c477-4611-9eb3-d0a9a1254574/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:59:42,600 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 57 more)] === [2023-11-19 07:59:42,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:59:42,601 INFO L85 PathProgramCache]: Analyzing trace with hash 47553309, now seen corresponding path program 1 times [2023-11-19 07:59:42,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:59:42,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823645930] [2023-11-19 07:59:42,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:59:42,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:59:42,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:59:42,702 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:59:42,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:59:42,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823645930] [2023-11-19 07:59:42,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823645930] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:59:42,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:59:42,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:59:42,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034738135] [2023-11-19 07:59:42,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:59:42,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:59:42,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:59:42,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:59:42,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:59:42,736 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 590 [2023-11-19 07:59:42,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 79 transitions, 320 flow. Second operand has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 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 07:59:42,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:59:42,737 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 590 [2023-11-19 07:59:42,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand