./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f530851-54f1-4626-8dee-3d426376b0b1/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f530851-54f1-4626-8dee-3d426376b0b1/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_6f530851-54f1-4626-8dee-3d426376b0b1/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f530851-54f1-4626-8dee-3d426376b0b1/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f530851-54f1-4626-8dee-3d426376b0b1/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_6f530851-54f1-4626-8dee-3d426376b0b1/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 1dad5daa490be7069cef5ea8bf1cf3314a40a44a4796167c86226f70cfcf68a2 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:34:48,250 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:34:48,324 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f530851-54f1-4626-8dee-3d426376b0b1/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:34:48,330 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:34:48,331 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:34:48,355 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:34:48,356 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:34:48,357 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:34:48,357 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:34:48,358 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:34:48,359 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:34:48,359 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:34:48,360 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:34:48,361 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:34:48,361 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:34:48,362 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:34:48,363 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:34:48,363 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:34:48,364 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:34:48,364 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:34:48,365 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:34:48,370 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:34:48,370 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:34:48,372 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:34:48,376 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:34:48,377 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:34:48,377 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:34:48,378 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:34:48,378 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:34:48,378 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:34:48,379 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:34:48,379 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:34:48,380 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:34:48,380 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:34:48,381 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:34:48,381 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:34:48,381 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:34:48,382 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:34:48,382 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:34:48,382 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:34:48,383 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:34:48,385 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_6f530851-54f1-4626-8dee-3d426376b0b1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f530851-54f1-4626-8dee-3d426376b0b1/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1dad5daa490be7069cef5ea8bf1cf3314a40a44a4796167c86226f70cfcf68a2 [2023-11-19 07:34:48,668 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:34:48,699 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:34:48,702 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:34:48,703 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:34:48,704 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:34:48,705 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f530851-54f1-4626-8dee-3d426376b0b1/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2023-11-19 07:34:51,890 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:34:52,179 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:34:52,180 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f530851-54f1-4626-8dee-3d426376b0b1/sv-benchmarks/c/weaver/popl20-counter-determinism.wvr.c [2023-11-19 07:34:52,190 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f530851-54f1-4626-8dee-3d426376b0b1/bin/uautomizer-verify-uCwYo4JHxu/data/2ca695128/0f1cf62eb12247c68431e0619c7428f5/FLAG4f17ae995 [2023-11-19 07:34:52,207 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f530851-54f1-4626-8dee-3d426376b0b1/bin/uautomizer-verify-uCwYo4JHxu/data/2ca695128/0f1cf62eb12247c68431e0619c7428f5 [2023-11-19 07:34:52,214 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:34:52,216 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:34:52,220 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:34:52,220 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:34:52,225 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:34:52,229 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:34:52" (1/1) ... [2023-11-19 07:34:52,230 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6adf9174 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:52, skipping insertion in model container [2023-11-19 07:34:52,230 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:34:52" (1/1) ... [2023-11-19 07:34:52,264 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:34:52,466 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:34:52,485 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:34:52,526 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:34:52,535 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:34:52,535 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:34:52,544 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:34:52,544 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:52 WrapperNode [2023-11-19 07:34:52,545 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:34:52,546 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:34:52,546 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:34:52,546 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:34:52,555 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:52" (1/1) ... [2023-11-19 07:34:52,565 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:52" (1/1) ... [2023-11-19 07:34:52,594 INFO L138 Inliner]: procedures = 23, calls = 42, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 130 [2023-11-19 07:34:52,594 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:34:52,595 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:34:52,595 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:34:52,596 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:34:52,606 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:52" (1/1) ... [2023-11-19 07:34:52,607 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:52" (1/1) ... [2023-11-19 07:34:52,611 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:52" (1/1) ... [2023-11-19 07:34:52,611 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:52" (1/1) ... [2023-11-19 07:34:52,619 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:52" (1/1) ... [2023-11-19 07:34:52,624 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:52" (1/1) ... [2023-11-19 07:34:52,626 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:52" (1/1) ... [2023-11-19 07:34:52,628 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:52" (1/1) ... [2023-11-19 07:34:52,631 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:34:52,632 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:34:52,633 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:34:52,633 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:34:52,634 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:52" (1/1) ... [2023-11-19 07:34:52,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:34:52,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f530851-54f1-4626-8dee-3d426376b0b1/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:34:52,677 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f530851-54f1-4626-8dee-3d426376b0b1/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:34:52,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f530851-54f1-4626-8dee-3d426376b0b1/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:34:52,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:34:52,739 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:34:52,740 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:34:52,740 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:34:52,740 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:34:52,741 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-19 07:34:52,741 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-19 07:34:52,741 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-11-19 07:34:52,741 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-11-19 07:34:52,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:34:52,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:34:52,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:34:52,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:34:52,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:34:52,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:34:52,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:34:52,746 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:34:52,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:34:52,748 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 07:34:52,921 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:34:52,923 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:34:53,295 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:34:53,407 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:34:53,407 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-19 07:34:53,412 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:34:53 BoogieIcfgContainer [2023-11-19 07:34:53,412 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:34:53,415 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:34:53,415 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:34:53,419 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:34:53,419 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:34:52" (1/3) ... [2023-11-19 07:34:53,420 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ccf7dd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:34:53, skipping insertion in model container [2023-11-19 07:34:53,420 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:34:52" (2/3) ... [2023-11-19 07:34:53,421 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ccf7dd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:34:53, skipping insertion in model container [2023-11-19 07:34:53,421 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:34:53" (3/3) ... [2023-11-19 07:34:53,423 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-counter-determinism.wvr.c [2023-11-19 07:34:53,433 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:34:53,445 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:34:53,445 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-11-19 07:34:53,445 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:34:53,591 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-19 07:34:53,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 155 transitions, 338 flow [2023-11-19 07:34:53,772 INFO L124 PetriNetUnfolderBase]: 9/151 cut-off events. [2023-11-19 07:34:53,772 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-11-19 07:34:53,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 151 events. 9/151 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 233 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 100. Up to 2 conditions per place. [2023-11-19 07:34:53,783 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 155 transitions, 338 flow [2023-11-19 07:34:53,790 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 125 transitions, 271 flow [2023-11-19 07:34:53,794 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:34:53,805 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 130 places, 125 transitions, 271 flow [2023-11-19 07:34:53,809 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 130 places, 125 transitions, 271 flow [2023-11-19 07:34:53,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 125 transitions, 271 flow [2023-11-19 07:34:53,853 INFO L124 PetriNetUnfolderBase]: 8/125 cut-off events. [2023-11-19 07:34:53,853 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-19 07:34:53,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 125 events. 8/125 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 230 event pairs, 0 based on Foata normal form. 0/101 useless extension candidates. Maximal degree in co-relation 100. Up to 2 conditions per place. [2023-11-19 07:34:53,862 INFO L119 LiptonReduction]: Number of co-enabled transitions 6264 [2023-11-19 07:34:58,886 INFO L134 LiptonReduction]: Checked pairs total: 6443 [2023-11-19 07:34:58,887 INFO L136 LiptonReduction]: Total number of compositions: 110 [2023-11-19 07:34:58,917 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:34:58,927 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;@9755d79, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:34:58,927 INFO L358 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2023-11-19 07:34:58,956 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:34:58,956 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2023-11-19 07:34:58,956 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:34:58,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:34:58,957 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:34:58,958 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-19 07:34:58,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:34:58,969 INFO L85 PathProgramCache]: Analyzing trace with hash 19835856, now seen corresponding path program 1 times [2023-11-19 07:34:58,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:34:58,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293008229] [2023-11-19 07:34:58,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:34:58,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:34:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:34:59,295 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 07:34:59,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:34:59,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293008229] [2023-11-19 07:34:59,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293008229] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:34:59,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:34:59,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:34:59,299 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134910063] [2023-11-19 07:34:59,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:34:59,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:34:59,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:34:59,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:34:59,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:34:59,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 265 [2023-11-19 07:34:59,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 43 transitions, 107 flow. Second operand has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 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 07:34:59,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:34:59,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 265 [2023-11-19 07:34:59,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:02,238 INFO L124 PetriNetUnfolderBase]: 18167/23634 cut-off events. [2023-11-19 07:35:02,239 INFO L125 PetriNetUnfolderBase]: For 1282/1282 co-relation queries the response was YES. [2023-11-19 07:35:02,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48488 conditions, 23634 events. 18167/23634 cut-off events. For 1282/1282 co-relation queries the response was YES. Maximal size of possible extension queue 1088. Compared 119974 event pairs, 4111 based on Foata normal form. 0/10020 useless extension candidates. Maximal degree in co-relation 41018. Up to 19063 conditions per place. [2023-11-19 07:35:02,512 INFO L140 encePairwiseOnDemand]: 253/265 looper letters, 69 selfloop transitions, 4 changer transitions 0/73 dead transitions. [2023-11-19 07:35:02,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 73 transitions, 331 flow [2023-11-19 07:35:02,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:35:02,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:35:02,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 467 transitions. [2023-11-19 07:35:02,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5874213836477987 [2023-11-19 07:35:02,539 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 467 transitions. [2023-11-19 07:35:02,540 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 467 transitions. [2023-11-19 07:35:02,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:02,548 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 467 transitions. [2023-11-19 07:35:02,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 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 07:35:02,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 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 07:35:02,561 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 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 07:35:02,564 INFO L175 Difference]: Start difference. First operand has 52 places, 43 transitions, 107 flow. Second operand 3 states and 467 transitions. [2023-11-19 07:35:02,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 73 transitions, 331 flow [2023-11-19 07:35:02,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 73 transitions, 307 flow, removed 0 selfloop flow, removed 7 redundant places. [2023-11-19 07:35:02,599 INFO L231 Difference]: Finished difference. Result has 46 places, 44 transitions, 126 flow [2023-11-19 07:35:02,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=46, PETRI_TRANSITIONS=44} [2023-11-19 07:35:02,605 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -6 predicate places. [2023-11-19 07:35:02,606 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 44 transitions, 126 flow [2023-11-19 07:35:02,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.33333333333334) internal successors, (388), 3 states have internal predecessors, (388), 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 07:35:02,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:02,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:35:02,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:35:02,608 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-19 07:35:02,608 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:02,609 INFO L85 PathProgramCache]: Analyzing trace with hash 614913351, now seen corresponding path program 1 times [2023-11-19 07:35:02,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:02,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575694097] [2023-11-19 07:35:02,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:02,610 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:02,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:02,772 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 07:35:02,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:02,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575694097] [2023-11-19 07:35:02,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575694097] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:35:02,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1320289352] [2023-11-19 07:35:02,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:02,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:35:02,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f530851-54f1-4626-8dee-3d426376b0b1/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:35:02,777 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f530851-54f1-4626-8dee-3d426376b0b1/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:35:02,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f530851-54f1-4626-8dee-3d426376b0b1/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:35:02,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:02,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:35:02,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:35:02,912 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 07:35:02,913 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:35:02,934 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 07:35:02,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1320289352] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:35:02,935 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:35:02,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-19 07:35:02,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059339119] [2023-11-19 07:35:02,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:35:02,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:35:02,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:02,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:35:02,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:35:02,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 265 [2023-11-19 07:35:02,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 44 transitions, 126 flow. Second operand has 7 states, 7 states have (on average 127.42857142857143) internal successors, (892), 7 states have internal predecessors, (892), 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 07:35:02,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:02,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 265 [2023-11-19 07:35:02,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:07,922 INFO L124 PetriNetUnfolderBase]: 39553/50438 cut-off events. [2023-11-19 07:35:07,922 INFO L125 PetriNetUnfolderBase]: For 1472/1472 co-relation queries the response was YES. [2023-11-19 07:35:07,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119559 conditions, 50438 events. 39553/50438 cut-off events. For 1472/1472 co-relation queries the response was YES. Maximal size of possible extension queue 2101. Compared 262949 event pairs, 11263 based on Foata normal form. 0/24094 useless extension candidates. Maximal degree in co-relation 24054. Up to 21269 conditions per place. [2023-11-19 07:35:08,404 INFO L140 encePairwiseOnDemand]: 260/265 looper letters, 171 selfloop transitions, 13 changer transitions 0/184 dead transitions. [2023-11-19 07:35:08,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 184 transitions, 844 flow [2023-11-19 07:35:08,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:35:08,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:35:08,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1071 transitions. [2023-11-19 07:35:08,415 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5773584905660377 [2023-11-19 07:35:08,416 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1071 transitions. [2023-11-19 07:35:08,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1071 transitions. [2023-11-19 07:35:08,417 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:08,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1071 transitions. [2023-11-19 07:35:08,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 153.0) internal successors, (1071), 7 states have internal predecessors, (1071), 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 07:35:08,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 265.0) internal successors, (2120), 8 states have internal predecessors, (2120), 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 07:35:08,430 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 265.0) internal successors, (2120), 8 states have internal predecessors, (2120), 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 07:35:08,430 INFO L175 Difference]: Start difference. First operand has 46 places, 44 transitions, 126 flow. Second operand 7 states and 1071 transitions. [2023-11-19 07:35:08,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 184 transitions, 844 flow [2023-11-19 07:35:08,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 184 transitions, 842 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:35:08,439 INFO L231 Difference]: Finished difference. Result has 54 places, 52 transitions, 194 flow [2023-11-19 07:35:08,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=194, PETRI_PLACES=54, PETRI_TRANSITIONS=52} [2023-11-19 07:35:08,440 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 2 predicate places. [2023-11-19 07:35:08,440 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 52 transitions, 194 flow [2023-11-19 07:35:08,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 127.42857142857143) internal successors, (892), 7 states have internal predecessors, (892), 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 07:35:08,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:08,442 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 07:35:08,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f530851-54f1-4626-8dee-3d426376b0b1/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:35:08,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f530851-54f1-4626-8dee-3d426376b0b1/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:35:08,664 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-19 07:35:08,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:08,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1882445320, now seen corresponding path program 1 times [2023-11-19 07:35:08,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:08,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198133852] [2023-11-19 07:35:08,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:08,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:08,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:08,836 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:08,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:08,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198133852] [2023-11-19 07:35:08,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198133852] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:35:08,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120838114] [2023-11-19 07:35:08,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:08,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:35:08,843 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f530851-54f1-4626-8dee-3d426376b0b1/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:35:08,844 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f530851-54f1-4626-8dee-3d426376b0b1/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:35:08,872 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f530851-54f1-4626-8dee-3d426376b0b1/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:35:08,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:08,941 INFO L262 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:35:08,943 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:35:08,963 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:08,963 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:35:08,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120838114] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:08,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:35:08,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-11-19 07:35:08,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776169017] [2023-11-19 07:35:08,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:08,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:35:08,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:08,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:35:08,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:35:08,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 265 [2023-11-19 07:35:08,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 52 transitions, 194 flow. Second operand has 5 states, 5 states have (on average 127.2) internal successors, (636), 5 states have internal predecessors, (636), 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 07:35:08,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:08,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 265 [2023-11-19 07:35:08,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:12,796 INFO L124 PetriNetUnfolderBase]: 35705/45988 cut-off events. [2023-11-19 07:35:12,797 INFO L125 PetriNetUnfolderBase]: For 3202/3202 co-relation queries the response was YES. [2023-11-19 07:35:12,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 118601 conditions, 45988 events. 35705/45988 cut-off events. For 3202/3202 co-relation queries the response was YES. Maximal size of possible extension queue 1965. Compared 250558 event pairs, 5367 based on Foata normal form. 1204/27322 useless extension candidates. Maximal degree in co-relation 63091. Up to 27042 conditions per place. [2023-11-19 07:35:13,071 INFO L140 encePairwiseOnDemand]: 261/265 looper letters, 116 selfloop transitions, 8 changer transitions 0/124 dead transitions. [2023-11-19 07:35:13,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 124 transitions, 599 flow [2023-11-19 07:35:13,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:35:13,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:35:13,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 752 transitions. [2023-11-19 07:35:13,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5675471698113208 [2023-11-19 07:35:13,077 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 752 transitions. [2023-11-19 07:35:13,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 752 transitions. [2023-11-19 07:35:13,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:13,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 752 transitions. [2023-11-19 07:35:13,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.4) internal successors, (752), 5 states have internal predecessors, (752), 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 07:35:13,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 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 07:35:13,086 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 265.0) internal successors, (1590), 6 states have internal predecessors, (1590), 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 07:35:13,087 INFO L175 Difference]: Start difference. First operand has 54 places, 52 transitions, 194 flow. Second operand 5 states and 752 transitions. [2023-11-19 07:35:13,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 124 transitions, 599 flow [2023-11-19 07:35:13,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 124 transitions, 595 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 07:35:13,355 INFO L231 Difference]: Finished difference. Result has 55 places, 48 transitions, 179 flow [2023-11-19 07:35:13,356 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=179, PETRI_PLACES=55, PETRI_TRANSITIONS=48} [2023-11-19 07:35:13,357 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2023-11-19 07:35:13,358 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 48 transitions, 179 flow [2023-11-19 07:35:13,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.2) internal successors, (636), 5 states have internal predecessors, (636), 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 07:35:13,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:13,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:35:13,380 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f530851-54f1-4626-8dee-3d426376b0b1/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-19 07:35:13,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f530851-54f1-4626-8dee-3d426376b0b1/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:35:13,580 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-19 07:35:13,581 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:13,581 INFO L85 PathProgramCache]: Analyzing trace with hash 614913312, now seen corresponding path program 1 times [2023-11-19 07:35:13,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:13,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685011888] [2023-11-19 07:35:13,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:13,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:13,646 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 07:35:13,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:13,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685011888] [2023-11-19 07:35:13,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685011888] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:13,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:13,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:35:13,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416154389] [2023-11-19 07:35:13,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:13,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:35:13,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:13,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:35:13,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:35:13,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 265 [2023-11-19 07:35:13,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 48 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 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 07:35:13,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:13,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 265 [2023-11-19 07:35:13,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:16,592 INFO L124 PetriNetUnfolderBase]: 27537/35412 cut-off events. [2023-11-19 07:35:16,592 INFO L125 PetriNetUnfolderBase]: For 32363/32363 co-relation queries the response was YES. [2023-11-19 07:35:16,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96691 conditions, 35412 events. 27537/35412 cut-off events. For 32363/32363 co-relation queries the response was YES. Maximal size of possible extension queue 1434. Compared 169810 event pairs, 21823 based on Foata normal form. 0/22174 useless extension candidates. Maximal degree in co-relation 52738. Up to 35412 conditions per place. [2023-11-19 07:35:16,773 INFO L140 encePairwiseOnDemand]: 263/265 looper letters, 46 selfloop transitions, 1 changer transitions 0/47 dead transitions. [2023-11-19 07:35:16,773 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 47 transitions, 269 flow [2023-11-19 07:35:16,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:35:16,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:35:16,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 424 transitions. [2023-11-19 07:35:16,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2023-11-19 07:35:16,781 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 424 transitions. [2023-11-19 07:35:16,782 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 424 transitions. [2023-11-19 07:35:16,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:16,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 424 transitions. [2023-11-19 07:35:16,785 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 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 07:35:16,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 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 07:35:16,791 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 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 07:35:16,791 INFO L175 Difference]: Start difference. First operand has 55 places, 48 transitions, 179 flow. Second operand 3 states and 424 transitions. [2023-11-19 07:35:16,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 47 transitions, 269 flow [2023-11-19 07:35:16,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 47 transitions, 257 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-19 07:35:16,805 INFO L231 Difference]: Finished difference. Result has 53 places, 47 transitions, 165 flow [2023-11-19 07:35:16,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=53, PETRI_TRANSITIONS=47} [2023-11-19 07:35:16,809 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2023-11-19 07:35:16,809 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 47 transitions, 165 flow [2023-11-19 07:35:16,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 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 07:35:16,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:16,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:35:16,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:35:16,811 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-19 07:35:16,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:16,811 INFO L85 PathProgramCache]: Analyzing trace with hash 614913313, now seen corresponding path program 1 times [2023-11-19 07:35:16,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:16,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684965516] [2023-11-19 07:35:16,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:16,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:16,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:16,888 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 07:35:16,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:16,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684965516] [2023-11-19 07:35:16,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684965516] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:35:16,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751020594] [2023-11-19 07:35:16,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:16,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:35:16,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f530851-54f1-4626-8dee-3d426376b0b1/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:35:16,891 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f530851-54f1-4626-8dee-3d426376b0b1/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:35:16,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f530851-54f1-4626-8dee-3d426376b0b1/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:35:16,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:16,974 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:35:16,975 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:35:16,990 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 07:35:16,990 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:35:17,010 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 07:35:17,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751020594] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:35:17,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:35:17,016 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-19 07:35:17,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396259063] [2023-11-19 07:35:17,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:35:17,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:35:17,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:17,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:35:17,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:35:17,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 265 [2023-11-19 07:35:17,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 47 transitions, 165 flow. Second operand has 7 states, 7 states have (on average 130.0) internal successors, (910), 7 states have internal predecessors, (910), 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 07:35:17,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:17,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 265 [2023-11-19 07:35:17,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:22,160 INFO L124 PetriNetUnfolderBase]: 50467/65522 cut-off events. [2023-11-19 07:35:22,161 INFO L125 PetriNetUnfolderBase]: For 26271/26271 co-relation queries the response was YES. [2023-11-19 07:35:22,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176228 conditions, 65522 events. 50467/65522 cut-off events. For 26271/26271 co-relation queries the response was YES. Maximal size of possible extension queue 2250. Compared 358074 event pairs, 9603 based on Foata normal form. 5990/47318 useless extension candidates. Maximal degree in co-relation 176217. Up to 16207 conditions per place. [2023-11-19 07:35:22,440 INFO L140 encePairwiseOnDemand]: 257/265 looper letters, 167 selfloop transitions, 25 changer transitions 0/192 dead transitions. [2023-11-19 07:35:22,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 192 transitions, 1002 flow [2023-11-19 07:35:22,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:35:22,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:35:22,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 951 transitions. [2023-11-19 07:35:22,445 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5981132075471698 [2023-11-19 07:35:22,445 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 951 transitions. [2023-11-19 07:35:22,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 951 transitions. [2023-11-19 07:35:22,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:22,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 951 transitions. [2023-11-19 07:35:22,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 158.5) internal successors, (951), 6 states have internal predecessors, (951), 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 07:35:22,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 265.0) internal successors, (1855), 7 states have internal predecessors, (1855), 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 07:35:22,453 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 265.0) internal successors, (1855), 7 states have internal predecessors, (1855), 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 07:35:22,453 INFO L175 Difference]: Start difference. First operand has 53 places, 47 transitions, 165 flow. Second operand 6 states and 951 transitions. [2023-11-19 07:35:22,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 192 transitions, 1002 flow [2023-11-19 07:35:22,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 192 transitions, 983 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-11-19 07:35:22,924 INFO L231 Difference]: Finished difference. Result has 61 places, 67 transitions, 414 flow [2023-11-19 07:35:22,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=414, PETRI_PLACES=61, PETRI_TRANSITIONS=67} [2023-11-19 07:35:22,925 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2023-11-19 07:35:22,925 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 67 transitions, 414 flow [2023-11-19 07:35:22,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 130.0) internal successors, (910), 7 states have internal predecessors, (910), 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 07:35:22,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:22,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:35:22,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f530851-54f1-4626-8dee-3d426376b0b1/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:35:23,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f530851-54f1-4626-8dee-3d426376b0b1/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:35:23,127 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-19 07:35:23,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:23,127 INFO L85 PathProgramCache]: Analyzing trace with hash 846378183, now seen corresponding path program 1 times [2023-11-19 07:35:23,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:23,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982413133] [2023-11-19 07:35:23,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:23,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:23,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:23,173 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 07:35:23,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:23,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982413133] [2023-11-19 07:35:23,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982413133] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:35:23,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:35:23,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:35:23,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365612804] [2023-11-19 07:35:23,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:35:23,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:35:23,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:23,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:35:23,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:35:23,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 265 [2023-11-19 07:35:23,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 67 transitions, 414 flow. Second operand has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 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 07:35:23,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:23,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 265 [2023-11-19 07:35:23,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:35:29,383 INFO L124 PetriNetUnfolderBase]: 55723/72098 cut-off events. [2023-11-19 07:35:29,383 INFO L125 PetriNetUnfolderBase]: For 102280/102280 co-relation queries the response was YES. [2023-11-19 07:35:29,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230094 conditions, 72098 events. 55723/72098 cut-off events. For 102280/102280 co-relation queries the response was YES. Maximal size of possible extension queue 2441. Compared 385744 event pairs, 33971 based on Foata normal form. 0/46874 useless extension candidates. Maximal degree in co-relation 230078. Up to 62603 conditions per place. [2023-11-19 07:35:29,765 INFO L140 encePairwiseOnDemand]: 260/265 looper letters, 100 selfloop transitions, 5 changer transitions 0/105 dead transitions. [2023-11-19 07:35:29,766 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 105 transitions, 807 flow [2023-11-19 07:35:29,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:35:29,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:35:29,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 447 transitions. [2023-11-19 07:35:29,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5622641509433962 [2023-11-19 07:35:29,769 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 447 transitions. [2023-11-19 07:35:29,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 447 transitions. [2023-11-19 07:35:29,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:35:29,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 447 transitions. [2023-11-19 07:35:29,772 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.0) internal successors, (447), 3 states have internal predecessors, (447), 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 07:35:29,774 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 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 07:35:29,775 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 265.0) internal successors, (1060), 4 states have internal predecessors, (1060), 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 07:35:29,775 INFO L175 Difference]: Start difference. First operand has 61 places, 67 transitions, 414 flow. Second operand 3 states and 447 transitions. [2023-11-19 07:35:29,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 105 transitions, 807 flow [2023-11-19 07:35:34,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 105 transitions, 753 flow, removed 27 selfloop flow, removed 0 redundant places. [2023-11-19 07:35:34,201 INFO L231 Difference]: Finished difference. Result has 64 places, 71 transitions, 433 flow [2023-11-19 07:35:34,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=265, PETRI_DIFFERENCE_MINUEND_FLOW=374, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=433, PETRI_PLACES=64, PETRI_TRANSITIONS=71} [2023-11-19 07:35:34,202 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 12 predicate places. [2023-11-19 07:35:34,203 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 71 transitions, 433 flow [2023-11-19 07:35:34,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.66666666666666) internal successors, (386), 3 states have internal predecessors, (386), 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 07:35:34,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:35:34,203 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-11-19 07:35:34,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:35:34,204 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 33 more)] === [2023-11-19 07:35:34,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:35:34,204 INFO L85 PathProgramCache]: Analyzing trace with hash 848754704, now seen corresponding path program 2 times [2023-11-19 07:35:34,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:35:34,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548174618] [2023-11-19 07:35:34,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:35:34,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:35:34,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:35:34,294 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:34,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:35:34,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548174618] [2023-11-19 07:35:34,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548174618] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:35:34,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85428853] [2023-11-19 07:35:34,296 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:35:34,296 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:35:34,296 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f530851-54f1-4626-8dee-3d426376b0b1/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:35:34,297 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f530851-54f1-4626-8dee-3d426376b0b1/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:35:34,320 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6f530851-54f1-4626-8dee-3d426376b0b1/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:35:34,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:35:34,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:35:34,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:35:34,395 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:35:34,428 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:34,429 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:35:34,509 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:35:34,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85428853] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:35:34,510 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:35:34,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-11-19 07:35:34,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720185727] [2023-11-19 07:35:34,514 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:35:34,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:35:34,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:35:34,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:35:34,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:35:34,533 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 265 [2023-11-19 07:35:34,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 71 transitions, 433 flow. Second operand has 13 states, 13 states have (on average 129.53846153846155) internal successors, (1684), 13 states have internal predecessors, (1684), 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 07:35:34,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:35:34,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 265 [2023-11-19 07:35:34,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand