./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.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_2262f11d-7b3c-4b7a-90ad-ab0221375faf/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2262f11d-7b3c-4b7a-90ad-ab0221375faf/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_2262f11d-7b3c-4b7a-90ad-ab0221375faf/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2262f11d-7b3c-4b7a-90ad-ab0221375faf/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2262f11d-7b3c-4b7a-90ad-ab0221375faf/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_2262f11d-7b3c-4b7a-90ad-ab0221375faf/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 6fdb5189ea0a06d32886b44c2108d225ef2901fa5113fdc3856a252d0f653190 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:55:37,881 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:55:37,948 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2262f11d-7b3c-4b7a-90ad-ab0221375faf/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:55:37,953 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:55:37,954 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:55:37,979 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:55:37,980 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:55:37,981 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:55:37,982 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:55:37,982 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:55:37,983 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:55:37,984 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:55:37,985 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:55:37,985 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:55:37,986 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:55:37,987 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:55:37,987 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:55:37,988 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:55:37,989 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:55:37,989 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:55:37,990 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:55:37,992 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:55:37,992 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:55:37,993 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:55:37,993 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:55:37,994 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:55:38,007 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:55:38,008 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:55:38,008 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:55:38,009 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:55:38,009 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:55:38,010 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:55:38,010 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:55:38,012 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:55:38,012 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:55:38,013 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:55:38,013 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:55:38,014 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:55:38,014 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:55:38,015 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:55:38,015 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:55:38,017 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_2262f11d-7b3c-4b7a-90ad-ab0221375faf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2262f11d-7b3c-4b7a-90ad-ab0221375faf/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6fdb5189ea0a06d32886b44c2108d225ef2901fa5113fdc3856a252d0f653190 [2023-11-19 07:55:38,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:55:38,368 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:55:38,391 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:55:38,393 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:55:38,394 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:55:38,395 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2262f11d-7b3c-4b7a-90ad-ab0221375faf/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c [2023-11-19 07:55:41,612 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:55:41,861 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:55:41,861 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2262f11d-7b3c-4b7a-90ad-ab0221375faf/sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c [2023-11-19 07:55:41,875 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2262f11d-7b3c-4b7a-90ad-ab0221375faf/bin/uautomizer-verify-uCwYo4JHxu/data/52c492761/e3223007deba4c12a52a73d2a9371a0e/FLAGec437a73a [2023-11-19 07:55:41,893 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2262f11d-7b3c-4b7a-90ad-ab0221375faf/bin/uautomizer-verify-uCwYo4JHxu/data/52c492761/e3223007deba4c12a52a73d2a9371a0e [2023-11-19 07:55:41,900 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:55:41,902 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:55:41,904 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:55:41,904 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:55:41,910 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:55:41,913 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:55:41" (1/1) ... [2023-11-19 07:55:41,914 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4946e614 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:41, skipping insertion in model container [2023-11-19 07:55:41,914 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:55:41" (1/1) ... [2023-11-19 07:55:41,955 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:55:42,241 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:55:42,258 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:55:42,325 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:55:42,339 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:55:42,340 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:55:42,348 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:55:42,350 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:42 WrapperNode [2023-11-19 07:55:42,351 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:55:42,354 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:55:42,358 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:55:42,358 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:55:42,367 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:42" (1/1) ... [2023-11-19 07:55:42,391 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:42" (1/1) ... [2023-11-19 07:55:42,435 INFO L138 Inliner]: procedures = 28, calls = 75, calls flagged for inlining = 19, calls inlined = 27, statements flattened = 436 [2023-11-19 07:55:42,436 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:55:42,436 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:55:42,437 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:55:42,437 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:55:42,447 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:42" (1/1) ... [2023-11-19 07:55:42,447 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:42" (1/1) ... [2023-11-19 07:55:42,454 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:42" (1/1) ... [2023-11-19 07:55:42,454 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:42" (1/1) ... [2023-11-19 07:55:42,470 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:42" (1/1) ... [2023-11-19 07:55:42,477 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:42" (1/1) ... [2023-11-19 07:55:42,480 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:42" (1/1) ... [2023-11-19 07:55:42,483 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:42" (1/1) ... [2023-11-19 07:55:42,490 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:55:42,491 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:55:42,491 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:55:42,491 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:55:42,492 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:42" (1/1) ... [2023-11-19 07:55:42,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:55:42,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2262f11d-7b3c-4b7a-90ad-ab0221375faf/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:55:42,532 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2262f11d-7b3c-4b7a-90ad-ab0221375faf/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:55:42,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2262f11d-7b3c-4b7a-90ad-ab0221375faf/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:55:42,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:55:42,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:55:42,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:55:42,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:55:42,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:55:42,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:55:42,573 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:55:42,573 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:55:42,573 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:55:42,573 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:55:42,574 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 07:55:42,574 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 07:55:42,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:55:42,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:55:42,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:55:42,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:55:42,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:55:42,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:55:42,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:55:42,577 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 07:55:42,780 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:55:42,782 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:55:43,647 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:55:44,277 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:55:44,277 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-19 07:55:44,287 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:55:44 BoogieIcfgContainer [2023-11-19 07:55:44,287 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:55:44,291 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:55:44,292 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:55:44,296 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:55:44,296 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:55:41" (1/3) ... [2023-11-19 07:55:44,297 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c4ba7fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:55:44, skipping insertion in model container [2023-11-19 07:55:44,299 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:55:42" (2/3) ... [2023-11-19 07:55:44,301 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c4ba7fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:55:44, skipping insertion in model container [2023-11-19 07:55:44,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:55:44" (3/3) ... [2023-11-19 07:55:44,302 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product-alt.wvr.c [2023-11-19 07:55:44,313 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:55:44,326 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:55:44,326 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-11-19 07:55:44,326 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:55:44,632 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-19 07:55:44,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 388 places, 424 transitions, 869 flow [2023-11-19 07:55:44,885 INFO L124 PetriNetUnfolderBase]: 46/421 cut-off events. [2023-11-19 07:55:44,885 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:55:44,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 434 conditions, 421 events. 46/421 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 932 event pairs, 0 based on Foata normal form. 0/343 useless extension candidates. Maximal degree in co-relation 338. Up to 4 conditions per place. [2023-11-19 07:55:44,906 INFO L82 GeneralOperation]: Start removeDead. Operand has 388 places, 424 transitions, 869 flow [2023-11-19 07:55:44,928 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 362 places, 397 transitions, 809 flow [2023-11-19 07:55:44,932 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:55:44,948 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 362 places, 397 transitions, 809 flow [2023-11-19 07:55:44,953 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 362 places, 397 transitions, 809 flow [2023-11-19 07:55:44,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 362 places, 397 transitions, 809 flow [2023-11-19 07:55:45,085 INFO L124 PetriNetUnfolderBase]: 45/397 cut-off events. [2023-11-19 07:55:45,086 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:55:45,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 409 conditions, 397 events. 45/397 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 921 event pairs, 0 based on Foata normal form. 0/320 useless extension candidates. Maximal degree in co-relation 338. Up to 4 conditions per place. [2023-11-19 07:55:45,109 INFO L119 LiptonReduction]: Number of co-enabled transitions 23332 [2023-11-19 07:56:16,143 INFO L134 LiptonReduction]: Checked pairs total: 24029 [2023-11-19 07:56:16,143 INFO L136 LiptonReduction]: Total number of compositions: 454 [2023-11-19 07:56:16,172 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:56:16,183 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;@3b419197, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:56:16,184 INFO L358 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2023-11-19 07:56:16,187 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:56:16,188 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-19 07:56:16,188 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:56:16,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:16,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:56:16,189 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-11-19 07:56:16,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:16,198 INFO L85 PathProgramCache]: Analyzing trace with hash 66060, now seen corresponding path program 1 times [2023-11-19 07:56:16,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:16,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146685260] [2023-11-19 07:56:16,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:16,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:16,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:16,616 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 07:56:16,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:16,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146685260] [2023-11-19 07:56:16,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146685260] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:16,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:16,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:56:16,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074931705] [2023-11-19 07:56:16,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:16,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:56:16,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:16,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:56:16,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:16,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 351 out of 878 [2023-11-19 07:56:16,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 70 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 351.6666666666667) internal successors, (1055), 3 states have internal predecessors, (1055), 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 07:56:16,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:16,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 351 of 878 [2023-11-19 07:56:16,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:20,116 INFO L124 PetriNetUnfolderBase]: 8803/12477 cut-off events. [2023-11-19 07:56:20,116 INFO L125 PetriNetUnfolderBase]: For 529/529 co-relation queries the response was YES. [2023-11-19 07:56:20,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25451 conditions, 12477 events. 8803/12477 cut-off events. For 529/529 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 65165 event pairs, 7888 based on Foata normal form. 0/6118 useless extension candidates. Maximal degree in co-relation 23790. Up to 12474 conditions per place. [2023-11-19 07:56:20,299 INFO L140 encePairwiseOnDemand]: 854/878 looper letters, 60 selfloop transitions, 10 changer transitions 0/70 dead transitions. [2023-11-19 07:56:20,299 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 70 transitions, 295 flow [2023-11-19 07:56:20,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:56:20,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:56:20,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1137 transitions. [2023-11-19 07:56:20,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4316628701594533 [2023-11-19 07:56:20,327 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1137 transitions. [2023-11-19 07:56:20,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1137 transitions. [2023-11-19 07:56:20,334 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:20,336 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1137 transitions. [2023-11-19 07:56:20,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 379.0) internal successors, (1137), 3 states have internal predecessors, (1137), 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 07:56:20,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 878.0) internal successors, (3512), 4 states have internal predecessors, (3512), 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 07:56:20,364 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 878.0) internal successors, (3512), 4 states have internal predecessors, (3512), 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 07:56:20,366 INFO L175 Difference]: Start difference. First operand has 71 places, 70 transitions, 155 flow. Second operand 3 states and 1137 transitions. [2023-11-19 07:56:20,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 70 transitions, 295 flow [2023-11-19 07:56:20,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 70 transitions, 286 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-19 07:56:20,381 INFO L231 Difference]: Finished difference. Result has 64 places, 70 transitions, 214 flow [2023-11-19 07:56:20,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=878, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=214, PETRI_PLACES=64, PETRI_TRANSITIONS=70} [2023-11-19 07:56:20,390 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -7 predicate places. [2023-11-19 07:56:20,391 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 70 transitions, 214 flow [2023-11-19 07:56:20,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 351.6666666666667) internal successors, (1055), 3 states have internal predecessors, (1055), 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 07:56:20,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:20,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:56:20,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:56:20,394 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-11-19 07:56:20,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:20,395 INFO L85 PathProgramCache]: Analyzing trace with hash 2049813, now seen corresponding path program 1 times [2023-11-19 07:56:20,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:20,397 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992200714] [2023-11-19 07:56:20,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:20,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:20,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:20,551 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:56:20,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:20,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992200714] [2023-11-19 07:56:20,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992200714] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:20,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:20,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:56:20,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73636408] [2023-11-19 07:56:20,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:20,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:56:20,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:20,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:56:20,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:20,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 351 out of 878 [2023-11-19 07:56:20,619 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 70 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 352.0) internal successors, (1056), 3 states have internal predecessors, (1056), 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 07:56:20,619 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:20,619 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 351 of 878 [2023-11-19 07:56:20,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:23,637 INFO L124 PetriNetUnfolderBase]: 8803/12474 cut-off events. [2023-11-19 07:56:23,637 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2023-11-19 07:56:23,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25335 conditions, 12474 events. 8803/12474 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 65171 event pairs, 7888 based on Foata normal form. 0/6121 useless extension candidates. Maximal degree in co-relation 25258. Up to 12462 conditions per place. [2023-11-19 07:56:23,744 INFO L140 encePairwiseOnDemand]: 869/878 looper letters, 57 selfloop transitions, 10 changer transitions 0/67 dead transitions. [2023-11-19 07:56:23,744 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 67 transitions, 336 flow [2023-11-19 07:56:23,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:56:23,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:56:23,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1115 transitions. [2023-11-19 07:56:23,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42331055429005315 [2023-11-19 07:56:23,755 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1115 transitions. [2023-11-19 07:56:23,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1115 transitions. [2023-11-19 07:56:23,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:23,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1115 transitions. [2023-11-19 07:56:23,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 371.6666666666667) internal successors, (1115), 3 states have internal predecessors, (1115), 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 07:56:23,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 878.0) internal successors, (3512), 4 states have internal predecessors, (3512), 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 07:56:23,776 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 878.0) internal successors, (3512), 4 states have internal predecessors, (3512), 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 07:56:23,776 INFO L175 Difference]: Start difference. First operand has 64 places, 70 transitions, 214 flow. Second operand 3 states and 1115 transitions. [2023-11-19 07:56:23,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 67 transitions, 336 flow [2023-11-19 07:56:23,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 67 transitions, 316 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:56:23,781 INFO L231 Difference]: Finished difference. Result has 61 places, 67 transitions, 202 flow [2023-11-19 07:56:23,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=878, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=202, PETRI_PLACES=61, PETRI_TRANSITIONS=67} [2023-11-19 07:56:23,782 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -10 predicate places. [2023-11-19 07:56:23,783 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 67 transitions, 202 flow [2023-11-19 07:56:23,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 352.0) internal successors, (1056), 3 states have internal predecessors, (1056), 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 07:56:23,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:23,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:56:23,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:56:23,785 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-11-19 07:56:23,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:23,803 INFO L85 PathProgramCache]: Analyzing trace with hash 2049812, now seen corresponding path program 1 times [2023-11-19 07:56:23,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:23,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499584162] [2023-11-19 07:56:23,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:23,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:23,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:23,912 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 07:56:23,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:23,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499584162] [2023-11-19 07:56:23,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499584162] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:56:23,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852817531] [2023-11-19 07:56:23,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:23,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:56:23,915 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2262f11d-7b3c-4b7a-90ad-ab0221375faf/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:56:23,917 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2262f11d-7b3c-4b7a-90ad-ab0221375faf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:56:23,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2262f11d-7b3c-4b7a-90ad-ab0221375faf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:56:24,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:24,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:56:24,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:56:24,169 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 07:56:24,170 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:56:24,191 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 07:56:24,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852817531] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:56:24,197 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:56:24,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-19 07:56:24,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498610010] [2023-11-19 07:56:24,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:56:24,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:56:24,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:24,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:56:24,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:56:24,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 351 out of 878 [2023-11-19 07:56:24,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 67 transitions, 202 flow. Second operand has 7 states, 7 states have (on average 352.14285714285717) internal successors, (2465), 7 states have internal predecessors, (2465), 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 07:56:24,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:24,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 351 of 878 [2023-11-19 07:56:24,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:56:27,344 INFO L124 PetriNetUnfolderBase]: 8818/12498 cut-off events. [2023-11-19 07:56:27,344 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2023-11-19 07:56:27,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25419 conditions, 12498 events. 8818/12498 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 556. Compared 65233 event pairs, 7888 based on Foata normal form. 0/6138 useless extension candidates. Maximal degree in co-relation 25258. Up to 12483 conditions per place. [2023-11-19 07:56:27,434 INFO L140 encePairwiseOnDemand]: 865/878 looper letters, 57 selfloop transitions, 34 changer transitions 0/91 dead transitions. [2023-11-19 07:56:27,434 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 91 transitions, 504 flow [2023-11-19 07:56:27,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:56:27,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:56:27,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2206 transitions. [2023-11-19 07:56:27,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4187547456340167 [2023-11-19 07:56:27,444 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2206 transitions. [2023-11-19 07:56:27,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2206 transitions. [2023-11-19 07:56:27,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:56:27,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2206 transitions. [2023-11-19 07:56:27,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 367.6666666666667) internal successors, (2206), 6 states have internal predecessors, (2206), 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 07:56:27,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 878.0) internal successors, (6146), 7 states have internal predecessors, (6146), 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 07:56:27,477 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 878.0) internal successors, (6146), 7 states have internal predecessors, (6146), 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 07:56:27,477 INFO L175 Difference]: Start difference. First operand has 61 places, 67 transitions, 202 flow. Second operand 6 states and 2206 transitions. [2023-11-19 07:56:27,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 91 transitions, 504 flow [2023-11-19 07:56:27,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 91 transitions, 460 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:56:27,485 INFO L231 Difference]: Finished difference. Result has 67 places, 91 transitions, 411 flow [2023-11-19 07:56:27,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=878, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=411, PETRI_PLACES=67, PETRI_TRANSITIONS=91} [2023-11-19 07:56:27,487 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -4 predicate places. [2023-11-19 07:56:27,487 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 91 transitions, 411 flow [2023-11-19 07:56:27,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 352.14285714285717) internal successors, (2465), 7 states have internal predecessors, (2465), 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 07:56:27,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:56:27,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:56:27,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2262f11d-7b3c-4b7a-90ad-ab0221375faf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:56:27,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2262f11d-7b3c-4b7a-90ad-ab0221375faf/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:56:27,703 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-11-19 07:56:27,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:56:27,704 INFO L85 PathProgramCache]: Analyzing trace with hash 986078713, now seen corresponding path program 1 times [2023-11-19 07:56:27,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:56:27,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731447716] [2023-11-19 07:56:27,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:56:27,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:56:27,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:56:27,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:56:27,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:56:27,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731447716] [2023-11-19 07:56:27,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731447716] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:56:27,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:56:27,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:56:27,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381785884] [2023-11-19 07:56:27,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:56:27,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:56:27,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:56:27,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:56:27,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:56:27,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 361 out of 878 [2023-11-19 07:56:27,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 91 transitions, 411 flow. Second operand has 3 states, 3 states have (on average 363.0) internal successors, (1089), 3 states have internal predecessors, (1089), 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 07:56:27,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:56:27,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 361 of 878 [2023-11-19 07:56:27,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand