./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 cf1a7837 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_e7b49c11-06be-4692-854c-389ef35d3061/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b49c11-06be-4692-854c-389ef35d3061/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b49c11-06be-4692-854c-389ef35d3061/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b49c11-06be-4692-854c-389ef35d3061/bin/uautomizer-verify-uTZkv6EMXl/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_e7b49c11-06be-4692-854c-389ef35d3061/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b49c11-06be-4692-854c-389ef35d3061/bin/uautomizer-verify-uTZkv6EMXl --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-cf1a783 [2023-11-12 02:12:27,924 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:12:28,043 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b49c11-06be-4692-854c-389ef35d3061/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-12 02:12:28,052 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:12:28,053 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:12:28,094 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:12:28,095 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:12:28,096 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:12:28,097 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:12:28,102 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:12:28,103 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:12:28,103 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:12:28,104 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:12:28,105 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:12:28,106 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:12:28,106 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:12:28,107 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:12:28,107 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:12:28,107 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:12:28,108 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:12:28,108 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:12:28,109 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:12:28,109 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 02:12:28,109 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:12:28,110 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:12:28,110 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:12:28,110 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:12:28,111 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:12:28,112 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:12:28,112 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:12:28,113 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:12:28,114 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:12:28,114 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:12:28,114 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:12:28,114 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:12:28,114 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:12:28,115 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:12:28,115 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:12:28,115 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:12:28,115 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:12:28,115 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:12:28,116 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_e7b49c11-06be-4692-854c-389ef35d3061/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b49c11-06be-4692-854c-389ef35d3061/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6fdb5189ea0a06d32886b44c2108d225ef2901fa5113fdc3856a252d0f653190 [2023-11-12 02:12:28,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:12:28,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:12:28,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:12:28,389 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:12:28,389 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:12:28,391 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b49c11-06be-4692-854c-389ef35d3061/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c [2023-11-12 02:12:31,543 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:12:31,754 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:12:31,754 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b49c11-06be-4692-854c-389ef35d3061/sv-benchmarks/c/weaver/popl20-bad-dot-product-alt.wvr.c [2023-11-12 02:12:31,766 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b49c11-06be-4692-854c-389ef35d3061/bin/uautomizer-verify-uTZkv6EMXl/data/4e3c844ba/92c253904de14ee7af00677f8cf694a8/FLAGd7bc58a65 [2023-11-12 02:12:31,784 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b49c11-06be-4692-854c-389ef35d3061/bin/uautomizer-verify-uTZkv6EMXl/data/4e3c844ba/92c253904de14ee7af00677f8cf694a8 [2023-11-12 02:12:31,790 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:12:31,794 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:12:31,800 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:12:31,800 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:12:31,806 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:12:31,806 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:12:31" (1/1) ... [2023-11-12 02:12:31,808 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1101e0d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:31, skipping insertion in model container [2023-11-12 02:12:31,808 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:12:31" (1/1) ... [2023-11-12 02:12:31,853 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:12:32,160 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:12:32,175 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:12:32,242 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:12:32,255 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:12:32,256 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:12:32,269 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:12:32,270 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:32 WrapperNode [2023-11-12 02:12:32,270 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:12:32,271 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:12:32,271 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:12:32,272 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:12:32,279 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:32" (1/1) ... [2023-11-12 02:12:32,291 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:32" (1/1) ... [2023-11-12 02:12:32,342 INFO L138 Inliner]: procedures = 28, calls = 75, calls flagged for inlining = 19, calls inlined = 27, statements flattened = 436 [2023-11-12 02:12:32,342 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:12:32,343 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:12:32,343 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:12:32,343 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:12:32,366 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:32" (1/1) ... [2023-11-12 02:12:32,366 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:32" (1/1) ... [2023-11-12 02:12:32,373 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:32" (1/1) ... [2023-11-12 02:12:32,374 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:32" (1/1) ... [2023-11-12 02:12:32,408 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:32" (1/1) ... [2023-11-12 02:12:32,415 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:32" (1/1) ... [2023-11-12 02:12:32,419 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:32" (1/1) ... [2023-11-12 02:12:32,422 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:32" (1/1) ... [2023-11-12 02:12:32,428 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:12:32,429 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:12:32,429 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:12:32,429 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:12:32,430 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:32" (1/1) ... [2023-11-12 02:12:32,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:12:32,465 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b49c11-06be-4692-854c-389ef35d3061/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:12:32,478 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b49c11-06be-4692-854c-389ef35d3061/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:12:32,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b49c11-06be-4692-854c-389ef35d3061/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:12:32,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:12:32,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 02:12:32,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:12:32,515 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:12:32,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:12:32,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 02:12:32,516 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 02:12:32,517 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 02:12:32,517 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 02:12:32,517 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 02:12:32,517 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-12 02:12:32,517 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-12 02:12:32,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:12:32,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:12:32,520 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:12:32,520 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:12:32,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:12:32,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:12:32,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:12:32,523 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:12:32,670 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:12:32,672 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:12:33,604 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:12:34,239 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:12:34,240 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-12 02:12:34,244 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:12:34 BoogieIcfgContainer [2023-11-12 02:12:34,244 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:12:34,247 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:12:34,248 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:12:34,251 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:12:34,252 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:12:31" (1/3) ... [2023-11-12 02:12:34,252 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36d25a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:12:34, skipping insertion in model container [2023-11-12 02:12:34,253 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:12:32" (2/3) ... [2023-11-12 02:12:34,255 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36d25a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:12:34, skipping insertion in model container [2023-11-12 02:12:34,255 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:12:34" (3/3) ... [2023-11-12 02:12:34,256 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-dot-product-alt.wvr.c [2023-11-12 02:12:34,266 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:12:34,277 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:12:34,277 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 32 error locations. [2023-11-12 02:12:34,277 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:12:34,516 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-12 02:12:34,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 388 places, 413 transitions, 847 flow [2023-11-12 02:12:34,845 INFO L124 PetriNetUnfolderBase]: 35/410 cut-off events. [2023-11-12 02:12:34,845 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-12 02:12:34,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 423 conditions, 410 events. 35/410 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 921 event pairs, 0 based on Foata normal form. 0/343 useless extension candidates. Maximal degree in co-relation 327. Up to 2 conditions per place. [2023-11-12 02:12:34,862 INFO L82 GeneralOperation]: Start removeDead. Operand has 388 places, 413 transitions, 847 flow [2023-11-12 02:12:34,878 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 362 places, 386 transitions, 787 flow [2023-11-12 02:12:34,882 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:12:34,904 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 362 places, 386 transitions, 787 flow [2023-11-12 02:12:34,909 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 362 places, 386 transitions, 787 flow [2023-11-12 02:12:34,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 362 places, 386 transitions, 787 flow [2023-11-12 02:12:35,023 INFO L124 PetriNetUnfolderBase]: 34/386 cut-off events. [2023-11-12 02:12:35,023 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:12:35,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398 conditions, 386 events. 34/386 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 907 event pairs, 0 based on Foata normal form. 0/320 useless extension candidates. Maximal degree in co-relation 327. Up to 2 conditions per place. [2023-11-12 02:12:35,095 INFO L119 LiptonReduction]: Number of co-enabled transitions 20670 [2023-11-12 02:13:11,545 INFO L134 LiptonReduction]: Checked pairs total: 22878 [2023-11-12 02:13:11,545 INFO L136 LiptonReduction]: Total number of compositions: 450 [2023-11-12 02:13:11,559 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:13:11,566 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;@19552ba4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:13:11,566 INFO L358 AbstractCegarLoop]: Starting to check reachability of 59 error locations. [2023-11-12 02:13:11,569 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:13:11,569 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-12 02:13:11,569 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:13:11,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:13:11,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-12 02:13:11,571 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-11-12 02:13:11,576 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:11,576 INFO L85 PathProgramCache]: Analyzing trace with hash 65436, now seen corresponding path program 1 times [2023-11-12 02:13:11,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:11,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261023231] [2023-11-12 02:13:11,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:11,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:11,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:12,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:13:12,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:12,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261023231] [2023-11-12 02:13:12,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261023231] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:12,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:13:12,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:13:12,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109740611] [2023-11-12 02:13:12,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:12,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:13:12,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:12,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:13:12,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:13:12,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 351 out of 863 [2023-11-12 02:13:12,143 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) [2023-11-12 02:13:12,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:13:12,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 351 of 863 [2023-11-12 02:13:12,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:13:15,295 INFO L124 PetriNetUnfolderBase]: 8803/12477 cut-off events. [2023-11-12 02:13:15,295 INFO L125 PetriNetUnfolderBase]: For 529/529 co-relation queries the response was YES. [2023-11-12 02:13:15,317 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 566. Compared 65369 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. [2023-11-12 02:13:15,398 INFO L140 encePairwiseOnDemand]: 839/863 looper letters, 60 selfloop transitions, 10 changer transitions 0/70 dead transitions. [2023-11-12 02:13:15,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 70 transitions, 295 flow [2023-11-12 02:13:15,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:13:15,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:13:15,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1137 transitions. [2023-11-12 02:13:15,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4391657010428737 [2023-11-12 02:13:15,422 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1137 transitions. [2023-11-12 02:13:15,422 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1137 transitions. [2023-11-12 02:13:15,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:13:15,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1137 transitions. [2023-11-12 02:13:15,438 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) [2023-11-12 02:13:15,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 863.0) internal successors, (3452), 4 states have internal predecessors, (3452), 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) [2023-11-12 02:13:15,453 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 863.0) internal successors, (3452), 4 states have internal predecessors, (3452), 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) [2023-11-12 02:13:15,455 INFO L175 Difference]: Start difference. First operand has 71 places, 70 transitions, 155 flow. Second operand 3 states and 1137 transitions. [2023-11-12 02:13:15,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 70 transitions, 295 flow [2023-11-12 02:13:15,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 70 transitions, 286 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-12 02:13:15,465 INFO L231 Difference]: Finished difference. Result has 64 places, 70 transitions, 214 flow [2023-11-12 02:13:15,467 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=863, 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} [2023-11-12 02:13:15,472 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -7 predicate places. [2023-11-12 02:13:15,472 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 70 transitions, 214 flow [2023-11-12 02:13:15,473 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) [2023-11-12 02:13:15,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:13:15,474 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:13:15,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:13:15,474 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-11-12 02:13:15,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:15,475 INFO L85 PathProgramCache]: Analyzing trace with hash 2030526, now seen corresponding path program 1 times [2023-11-12 02:13:15,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:15,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048228571] [2023-11-12 02:13:15,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:15,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:15,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:15,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:13:15,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:15,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048228571] [2023-11-12 02:13:15,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048228571] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:13:15,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:13:15,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:13:15,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310965132] [2023-11-12 02:13:15,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:13:15,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:13:15,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:15,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:13:15,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:13:15,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 351 out of 863 [2023-11-12 02:13:15,627 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) [2023-11-12 02:13:15,628 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:13:15,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 351 of 863 [2023-11-12 02:13:15,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:13:18,595 INFO L124 PetriNetUnfolderBase]: 8803/12474 cut-off events. [2023-11-12 02:13:18,595 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2023-11-12 02:13:18,616 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 566. Compared 65364 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. [2023-11-12 02:13:18,685 INFO L140 encePairwiseOnDemand]: 854/863 looper letters, 57 selfloop transitions, 10 changer transitions 0/67 dead transitions. [2023-11-12 02:13:18,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 67 transitions, 336 flow [2023-11-12 02:13:18,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:13:18,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:13:18,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1115 transitions. [2023-11-12 02:13:18,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4306682116647354 [2023-11-12 02:13:18,692 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1115 transitions. [2023-11-12 02:13:18,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1115 transitions. [2023-11-12 02:13:18,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:13:18,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1115 transitions. [2023-11-12 02:13:18,699 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) [2023-11-12 02:13:18,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 863.0) internal successors, (3452), 4 states have internal predecessors, (3452), 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) [2023-11-12 02:13:18,711 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 863.0) internal successors, (3452), 4 states have internal predecessors, (3452), 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) [2023-11-12 02:13:18,711 INFO L175 Difference]: Start difference. First operand has 64 places, 70 transitions, 214 flow. Second operand 3 states and 1115 transitions. [2023-11-12 02:13:18,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 67 transitions, 336 flow [2023-11-12 02:13:18,713 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 67 transitions, 316 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:13:18,715 INFO L231 Difference]: Finished difference. Result has 61 places, 67 transitions, 202 flow [2023-11-12 02:13:18,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=863, 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} [2023-11-12 02:13:18,717 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -10 predicate places. [2023-11-12 02:13:18,717 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 67 transitions, 202 flow [2023-11-12 02:13:18,718 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) [2023-11-12 02:13:18,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:13:18,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:13:18,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:13:18,720 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 56 more)] === [2023-11-12 02:13:18,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:13:18,720 INFO L85 PathProgramCache]: Analyzing trace with hash 2030527, now seen corresponding path program 1 times [2023-11-12 02:13:18,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:13:18,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165130766] [2023-11-12 02:13:18,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:18,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:13:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:18,829 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:13:18,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:13:18,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165130766] [2023-11-12 02:13:18,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165130766] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:13:18,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264772907] [2023-11-12 02:13:18,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:13:18,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:13:18,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b49c11-06be-4692-854c-389ef35d3061/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:13:18,841 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b49c11-06be-4692-854c-389ef35d3061/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:13:18,864 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7b49c11-06be-4692-854c-389ef35d3061/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:13:19,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:13:19,100 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:13:19,105 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:13:19,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:13:19,145 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:13:19,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:13:19,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264772907] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:13:19,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:13:19,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-12 02:13:19,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24422167] [2023-11-12 02:13:19,178 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:13:19,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:13:19,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:13:19,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:13:19,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:13:19,289 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 351 out of 863 [2023-11-12 02:13:19,294 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) [2023-11-12 02:13:19,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:13:19,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 351 of 863 [2023-11-12 02:13:19,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand