./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95d7d0a4-dba9-4249-b8ba-542cc9bea1b5/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95d7d0a4-dba9-4249-b8ba-542cc9bea1b5/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_95d7d0a4-dba9-4249-b8ba-542cc9bea1b5/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95d7d0a4-dba9-4249-b8ba-542cc9bea1b5/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95d7d0a4-dba9-4249-b8ba-542cc9bea1b5/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_95d7d0a4-dba9-4249-b8ba-542cc9bea1b5/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 34bb015d05a3d6b765805bee36bd4c1bc3f74929c05e61a51973bc9a4fc2cfc0 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:43:20,627 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:43:20,774 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95d7d0a4-dba9-4249-b8ba-542cc9bea1b5/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:43:20,782 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:43:20,783 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:43:20,829 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:43:20,830 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:43:20,830 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:43:20,832 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:43:20,838 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:43:20,840 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:43:20,841 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:43:20,841 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:43:20,844 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:43:20,844 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:43:20,845 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:43:20,846 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:43:20,846 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:43:20,847 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:43:20,847 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:43:20,848 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:43:20,849 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:43:20,849 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:43:20,850 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:43:20,850 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:43:20,851 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:43:20,852 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:43:20,853 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:43:20,853 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:43:20,854 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:43:20,877 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:43:20,878 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:43:20,878 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:43:20,878 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:43:20,879 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:43:20,879 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:43:20,880 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:43:20,880 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:43:20,880 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:43:20,881 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:43:20,881 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:43:20,882 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_95d7d0a4-dba9-4249-b8ba-542cc9bea1b5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95d7d0a4-dba9-4249-b8ba-542cc9bea1b5/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34bb015d05a3d6b765805bee36bd4c1bc3f74929c05e61a51973bc9a4fc2cfc0 [2023-11-19 07:43:21,206 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:43:21,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:43:21,250 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:43:21,252 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:43:21,253 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:43:21,254 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95d7d0a4-dba9-4249-b8ba-542cc9bea1b5/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2023-11-19 07:43:24,692 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:43:24,955 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:43:24,956 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95d7d0a4-dba9-4249-b8ba-542cc9bea1b5/sv-benchmarks/c/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2023-11-19 07:43:24,970 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95d7d0a4-dba9-4249-b8ba-542cc9bea1b5/bin/uautomizer-verify-uCwYo4JHxu/data/fbd1ee0cc/2b76ba1721ef44cc91e8c7507ef023fb/FLAG2db456d34 [2023-11-19 07:43:24,992 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95d7d0a4-dba9-4249-b8ba-542cc9bea1b5/bin/uautomizer-verify-uCwYo4JHxu/data/fbd1ee0cc/2b76ba1721ef44cc91e8c7507ef023fb [2023-11-19 07:43:24,998 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:43:25,000 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:43:25,005 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:43:25,005 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:43:25,012 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:43:25,013 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:43:24" (1/1) ... [2023-11-19 07:43:25,014 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@688de50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:25, skipping insertion in model container [2023-11-19 07:43:25,014 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:43:24" (1/1) ... [2023-11-19 07:43:25,053 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:43:25,296 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:43:25,308 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:43:25,338 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:43:25,348 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:43:25,348 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:43:25,357 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:43:25,358 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:25 WrapperNode [2023-11-19 07:43:25,358 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:43:25,360 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:43:25,360 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:43:25,360 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:43:25,369 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:25" (1/1) ... [2023-11-19 07:43:25,388 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:25" (1/1) ... [2023-11-19 07:43:25,423 INFO L138 Inliner]: procedures = 22, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 148 [2023-11-19 07:43:25,424 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:43:25,425 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:43:25,425 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:43:25,425 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:43:25,437 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:25" (1/1) ... [2023-11-19 07:43:25,437 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:25" (1/1) ... [2023-11-19 07:43:25,441 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:25" (1/1) ... [2023-11-19 07:43:25,449 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:25" (1/1) ... [2023-11-19 07:43:25,457 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:25" (1/1) ... [2023-11-19 07:43:25,462 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:25" (1/1) ... [2023-11-19 07:43:25,480 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:25" (1/1) ... [2023-11-19 07:43:25,482 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:25" (1/1) ... [2023-11-19 07:43:25,486 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:43:25,487 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:43:25,487 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:43:25,487 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:43:25,488 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:25" (1/1) ... [2023-11-19 07:43:25,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:43:25,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95d7d0a4-dba9-4249-b8ba-542cc9bea1b5/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:25,532 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95d7d0a4-dba9-4249-b8ba-542cc9bea1b5/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:43:25,537 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95d7d0a4-dba9-4249-b8ba-542cc9bea1b5/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:43:25,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:43:25,576 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:43:25,576 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:43:25,576 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:43:25,576 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:43:25,577 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 07:43:25,577 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 07:43:25,577 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-19 07:43:25,578 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-19 07:43:25,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:43:25,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:43:25,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:43:25,581 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:43:25,581 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:43:25,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:43:25,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:43:25,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:43:25,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:43:25,584 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 07:43:25,720 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:43:25,723 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:43:26,192 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:43:26,374 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:43:26,375 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-19 07:43:26,379 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:43:26 BoogieIcfgContainer [2023-11-19 07:43:26,380 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:43:26,383 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:43:26,383 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:43:26,387 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:43:26,388 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:43:24" (1/3) ... [2023-11-19 07:43:26,389 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cf1bd2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:43:26, skipping insertion in model container [2023-11-19 07:43:26,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:43:25" (2/3) ... [2023-11-19 07:43:26,389 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@cf1bd2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:43:26, skipping insertion in model container [2023-11-19 07:43:26,389 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:43:26" (3/3) ... [2023-11-19 07:43:26,391 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-proofs-counter-add-4-semi-Q67.wvr.c [2023-11-19 07:43:26,400 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:43:26,413 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:43:26,414 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-19 07:43:26,414 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:43:26,518 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-19 07:43:26,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 156 places, 153 transitions, 334 flow [2023-11-19 07:43:26,658 INFO L124 PetriNetUnfolderBase]: 10/149 cut-off events. [2023-11-19 07:43:26,658 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-19 07:43:26,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 149 events. 10/149 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 134 event pairs, 0 based on Foata normal form. 0/123 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2023-11-19 07:43:26,676 INFO L82 GeneralOperation]: Start removeDead. Operand has 156 places, 153 transitions, 334 flow [2023-11-19 07:43:26,686 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 123 transitions, 267 flow [2023-11-19 07:43:26,690 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:43:26,701 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 123 transitions, 267 flow [2023-11-19 07:43:26,703 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 123 transitions, 267 flow [2023-11-19 07:43:26,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 123 transitions, 267 flow [2023-11-19 07:43:26,744 INFO L124 PetriNetUnfolderBase]: 9/123 cut-off events. [2023-11-19 07:43:26,744 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:43:26,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139 conditions, 123 events. 9/123 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 134 event pairs, 0 based on Foata normal form. 0/98 useless extension candidates. Maximal degree in co-relation 105. Up to 2 conditions per place. [2023-11-19 07:43:26,750 INFO L119 LiptonReduction]: Number of co-enabled transitions 2904 [2023-11-19 07:43:34,123 INFO L134 LiptonReduction]: Checked pairs total: 3431 [2023-11-19 07:43:34,124 INFO L136 LiptonReduction]: Total number of compositions: 106 [2023-11-19 07:43:34,152 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:43:34,160 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;@68ff4a9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:43:34,161 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2023-11-19 07:43:34,173 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:43:34,173 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2023-11-19 07:43:34,173 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:43:34,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:34,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:43:34,175 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-19 07:43:34,180 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:34,181 INFO L85 PathProgramCache]: Analyzing trace with hash 20570307, now seen corresponding path program 1 times [2023-11-19 07:43:34,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:34,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579879231] [2023-11-19 07:43:34,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:34,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:34,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:34,638 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 07:43:34,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:34,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579879231] [2023-11-19 07:43:34,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579879231] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:34,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:34,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:43:34,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228937966] [2023-11-19 07:43:34,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:34,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:43:34,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:34,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:43:34,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:43:34,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 259 [2023-11-19 07:43:34,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 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 07:43:34,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:34,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 259 [2023-11-19 07:43:34,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:39,940 INFO L124 PetriNetUnfolderBase]: 36245/43467 cut-off events. [2023-11-19 07:43:39,941 INFO L125 PetriNetUnfolderBase]: For 1006/1006 co-relation queries the response was YES. [2023-11-19 07:43:40,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88353 conditions, 43467 events. 36245/43467 cut-off events. For 1006/1006 co-relation queries the response was YES. Maximal size of possible extension queue 2888. Compared 201228 event pairs, 7551 based on Foata normal form. 0/11884 useless extension candidates. Maximal degree in co-relation 73949. Up to 26809 conditions per place. [2023-11-19 07:43:40,411 INFO L140 encePairwiseOnDemand]: 253/259 looper letters, 68 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-11-19 07:43:40,411 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 74 transitions, 327 flow [2023-11-19 07:43:40,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:43:40,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:43:40,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 427 transitions. [2023-11-19 07:43:40,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5495495495495496 [2023-11-19 07:43:40,443 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 427 transitions. [2023-11-19 07:43:40,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 427 transitions. [2023-11-19 07:43:40,449 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:40,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 427 transitions. [2023-11-19 07:43:40,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 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 07:43:40,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 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 07:43:40,470 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 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 07:43:40,472 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 107 flow. Second operand 3 states and 427 transitions. [2023-11-19 07:43:40,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 74 transitions, 327 flow [2023-11-19 07:43:40,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 74 transitions, 303 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-19 07:43:40,631 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 104 flow [2023-11-19 07:43:40,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2023-11-19 07:43:40,638 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -6 predicate places. [2023-11-19 07:43:40,638 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 104 flow [2023-11-19 07:43:40,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 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 07:43:40,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:40,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:43:40,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:43:40,640 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-19 07:43:40,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:40,641 INFO L85 PathProgramCache]: Analyzing trace with hash 20570306, now seen corresponding path program 1 times [2023-11-19 07:43:40,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:40,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318505637] [2023-11-19 07:43:40,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:40,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:40,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:40,794 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 07:43:40,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:40,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318505637] [2023-11-19 07:43:40,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318505637] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:40,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:43:40,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:43:40,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799486074] [2023-11-19 07:43:40,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:40,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:43:40,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:40,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:43:40,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:43:40,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 259 [2023-11-19 07:43:40,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 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 07:43:40,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:40,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 259 [2023-11-19 07:43:40,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:44,678 INFO L124 PetriNetUnfolderBase]: 33783/40631 cut-off events. [2023-11-19 07:43:44,678 INFO L125 PetriNetUnfolderBase]: For 1606/1606 co-relation queries the response was YES. [2023-11-19 07:43:44,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84983 conditions, 40631 events. 33783/40631 cut-off events. For 1606/1606 co-relation queries the response was YES. Maximal size of possible extension queue 3093. Compared 175407 event pairs, 10621 based on Foata normal form. 0/12551 useless extension candidates. Maximal degree in co-relation 51676. Up to 40411 conditions per place. [2023-11-19 07:43:45,042 INFO L140 encePairwiseOnDemand]: 242/259 looper letters, 52 selfloop transitions, 5 changer transitions 2/63 dead transitions. [2023-11-19 07:43:45,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 63 transitions, 274 flow [2023-11-19 07:43:45,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:43:45,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:43:45,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 421 transitions. [2023-11-19 07:43:45,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5418275418275418 [2023-11-19 07:43:45,047 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 421 transitions. [2023-11-19 07:43:45,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 421 transitions. [2023-11-19 07:43:45,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:45,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 421 transitions. [2023-11-19 07:43:45,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 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 07:43:45,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 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 07:43:45,060 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 259.0) internal successors, (1036), 4 states have internal predecessors, (1036), 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 07:43:45,062 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 104 flow. Second operand 3 states and 421 transitions. [2023-11-19 07:43:45,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 63 transitions, 274 flow [2023-11-19 07:43:45,065 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 63 transitions, 271 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:43:45,067 INFO L231 Difference]: Finished difference. Result has 48 places, 46 transitions, 159 flow [2023-11-19 07:43:45,068 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=159, PETRI_PLACES=48, PETRI_TRANSITIONS=46} [2023-11-19 07:43:45,069 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -4 predicate places. [2023-11-19 07:43:45,070 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 46 transitions, 159 flow [2023-11-19 07:43:45,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 118.0) internal successors, (354), 3 states have internal predecessors, (354), 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 07:43:45,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:45,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:43:45,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:43:45,072 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-19 07:43:45,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:45,079 INFO L85 PathProgramCache]: Analyzing trace with hash 637680145, now seen corresponding path program 1 times [2023-11-19 07:43:45,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:45,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924962811] [2023-11-19 07:43:45,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:45,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:45,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:45,224 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 07:43:45,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:45,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924962811] [2023-11-19 07:43:45,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924962811] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:43:45,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1634758457] [2023-11-19 07:43:45,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:45,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:45,228 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95d7d0a4-dba9-4249-b8ba-542cc9bea1b5/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:45,231 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95d7d0a4-dba9-4249-b8ba-542cc9bea1b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:43:45,269 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95d7d0a4-dba9-4249-b8ba-542cc9bea1b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:43:45,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:45,341 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:43:45,346 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:43:45,408 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 07:43:45,409 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:43:45,456 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 07:43:45,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1634758457] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:43:45,457 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:43:45,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-19 07:43:45,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500024219] [2023-11-19 07:43:45,458 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:43:45,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:43:45,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:45,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:43:45,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:43:45,472 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 259 [2023-11-19 07:43:45,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 46 transitions, 159 flow. Second operand has 7 states, 7 states have (on average 118.57142857142857) internal successors, (830), 7 states have internal predecessors, (830), 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 07:43:45,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:45,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 259 [2023-11-19 07:43:45,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:43:54,372 INFO L124 PetriNetUnfolderBase]: 85384/106658 cut-off events. [2023-11-19 07:43:54,372 INFO L125 PetriNetUnfolderBase]: For 11941/11941 co-relation queries the response was YES. [2023-11-19 07:43:54,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 287433 conditions, 106658 events. 85384/106658 cut-off events. For 11941/11941 co-relation queries the response was YES. Maximal size of possible extension queue 6332. Compared 599228 event pairs, 7003 based on Foata normal form. 3502/62720 useless extension candidates. Maximal degree in co-relation 150567. Up to 63382 conditions per place. [2023-11-19 07:43:55,312 INFO L140 encePairwiseOnDemand]: 240/259 looper letters, 126 selfloop transitions, 60 changer transitions 0/190 dead transitions. [2023-11-19 07:43:55,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 190 transitions, 985 flow [2023-11-19 07:43:55,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:43:55,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:43:55,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1029 transitions. [2023-11-19 07:43:55,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5675675675675675 [2023-11-19 07:43:55,318 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1029 transitions. [2023-11-19 07:43:55,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1029 transitions. [2023-11-19 07:43:55,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:43:55,320 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1029 transitions. [2023-11-19 07:43:55,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 147.0) internal successors, (1029), 7 states have internal predecessors, (1029), 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 07:43:55,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 259.0) internal successors, (2072), 8 states have internal predecessors, (2072), 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 07:43:55,330 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 259.0) internal successors, (2072), 8 states have internal predecessors, (2072), 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 07:43:55,330 INFO L175 Difference]: Start difference. First operand has 48 places, 46 transitions, 159 flow. Second operand 7 states and 1029 transitions. [2023-11-19 07:43:55,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 190 transitions, 985 flow [2023-11-19 07:43:55,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 190 transitions, 980 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:43:55,386 INFO L231 Difference]: Finished difference. Result has 58 places, 101 transitions, 720 flow [2023-11-19 07:43:55,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=259, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=720, PETRI_PLACES=58, PETRI_TRANSITIONS=101} [2023-11-19 07:43:55,388 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 6 predicate places. [2023-11-19 07:43:55,388 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 101 transitions, 720 flow [2023-11-19 07:43:55,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 118.57142857142857) internal successors, (830), 7 states have internal predecessors, (830), 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 07:43:55,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:43:55,390 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 07:43:55,416 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95d7d0a4-dba9-4249-b8ba-542cc9bea1b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 07:43:55,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95d7d0a4-dba9-4249-b8ba-542cc9bea1b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-19 07:43:55,611 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-19 07:43:55,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:43:55,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1706751327, now seen corresponding path program 1 times [2023-11-19 07:43:55,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:43:55,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460149792] [2023-11-19 07:43:55,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:55,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:43:55,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:55,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:43:55,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:43:55,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460149792] [2023-11-19 07:43:55,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460149792] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:43:55,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496071171] [2023-11-19 07:43:55,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:43:55,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:43:55,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95d7d0a4-dba9-4249-b8ba-542cc9bea1b5/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:43:55,721 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95d7d0a4-dba9-4249-b8ba-542cc9bea1b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:43:55,743 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_95d7d0a4-dba9-4249-b8ba-542cc9bea1b5/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:43:55,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:43:55,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:43:55,816 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:43:55,836 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:43:55,836 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:43:55,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496071171] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:43:55,837 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:43:55,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-19 07:43:55,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384150109] [2023-11-19 07:43:55,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:43:55,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:43:55,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:43:55,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:43:55,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:43:55,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 259 [2023-11-19 07:43:55,849 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 101 transitions, 720 flow. Second operand has 5 states, 5 states have (on average 118.0) internal successors, (590), 5 states have internal predecessors, (590), 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 07:43:55,849 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:43:55,850 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 259 [2023-11-19 07:43:55,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand