./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-lit/sssc12.i --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_3a877e70-c44b-4f8e-ae08-fed98646c998/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a877e70-c44b-4f8e-ae08-fed98646c998/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_3a877e70-c44b-4f8e-ae08-fed98646c998/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a877e70-c44b-4f8e-ae08-fed98646c998/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-lit/sssc12.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a877e70-c44b-4f8e-ae08-fed98646c998/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_3a877e70-c44b-4f8e-ae08-fed98646c998/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 f04269da33313e0538e960083eba1e7b90d9e89847d2a89d06392d6991a3ed98 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:28:50,487 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:28:50,557 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a877e70-c44b-4f8e-ae08-fed98646c998/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-12 02:28:50,563 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:28:50,563 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:28:50,589 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:28:50,590 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:28:50,591 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:28:50,592 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:28:50,593 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:28:50,594 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:28:50,594 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:28:50,595 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:28:50,596 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:28:50,596 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:28:50,597 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:28:50,597 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:28:50,598 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:28:50,599 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:28:50,599 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:28:50,600 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:28:50,601 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:28:50,601 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 02:28:50,602 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:28:50,602 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:28:50,603 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:28:50,604 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:28:50,604 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:28:50,605 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:28:50,605 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:28:50,606 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:28:50,606 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:28:50,607 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:28:50,607 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:28:50,608 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:28:50,608 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:28:50,609 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:28:50,609 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:28:50,609 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:28:50,610 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:28:50,610 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:28:50,610 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_3a877e70-c44b-4f8e-ae08-fed98646c998/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a877e70-c44b-4f8e-ae08-fed98646c998/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f04269da33313e0538e960083eba1e7b90d9e89847d2a89d06392d6991a3ed98 [2023-11-12 02:28:50,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:28:50,891 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:28:50,894 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:28:50,895 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:28:50,896 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:28:50,897 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a877e70-c44b-4f8e-ae08-fed98646c998/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/pthread-lit/sssc12.i [2023-11-12 02:28:54,224 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:28:54,579 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:28:54,586 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a877e70-c44b-4f8e-ae08-fed98646c998/sv-benchmarks/c/pthread-lit/sssc12.i [2023-11-12 02:28:54,611 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a877e70-c44b-4f8e-ae08-fed98646c998/bin/uautomizer-verify-uTZkv6EMXl/data/4c0305dc9/e99c07afd2bb44d3a28bbb1425c8d46d/FLAGaf85d9ba8 [2023-11-12 02:28:54,625 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a877e70-c44b-4f8e-ae08-fed98646c998/bin/uautomizer-verify-uTZkv6EMXl/data/4c0305dc9/e99c07afd2bb44d3a28bbb1425c8d46d [2023-11-12 02:28:54,628 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:28:54,630 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:28:54,632 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:28:54,632 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:28:54,641 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:28:54,642 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:28:54" (1/1) ... [2023-11-12 02:28:54,646 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f741178 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:54, skipping insertion in model container [2023-11-12 02:28:54,646 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:28:54" (1/1) ... [2023-11-12 02:28:54,726 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:28:55,342 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:28:55,353 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:28:55,402 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:28:55,474 WARN L672 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:28:55,474 WARN L672 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-12 02:28:55,483 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:28:55,483 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:55 WrapperNode [2023-11-12 02:28:55,484 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:28:55,485 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:28:55,486 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:28:55,486 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:28:55,494 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:55" (1/1) ... [2023-11-12 02:28:55,532 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:55" (1/1) ... [2023-11-12 02:28:55,572 INFO L138 Inliner]: procedures = 275, calls = 24, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 91 [2023-11-12 02:28:55,572 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:28:55,573 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:28:55,573 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:28:55,573 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:28:55,582 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:55" (1/1) ... [2023-11-12 02:28:55,583 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:55" (1/1) ... [2023-11-12 02:28:55,599 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:55" (1/1) ... [2023-11-12 02:28:55,600 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:55" (1/1) ... [2023-11-12 02:28:55,612 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:55" (1/1) ... [2023-11-12 02:28:55,626 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:55" (1/1) ... [2023-11-12 02:28:55,628 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:55" (1/1) ... [2023-11-12 02:28:55,629 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:55" (1/1) ... [2023-11-12 02:28:55,632 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:28:55,637 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:28:55,637 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:28:55,638 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:28:55,639 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:55" (1/1) ... [2023-11-12 02:28:55,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:28:55,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a877e70-c44b-4f8e-ae08-fed98646c998/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:28:55,686 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a877e70-c44b-4f8e-ae08-fed98646c998/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:28:55,697 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3a877e70-c44b-4f8e-ae08-fed98646c998/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:28:55,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-12 02:28:55,724 INFO L130 BoogieDeclarations]: Found specification of procedure thr [2023-11-12 02:28:55,724 INFO L138 BoogieDeclarations]: Found implementation of procedure thr [2023-11-12 02:28:55,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:28:55,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:28:55,725 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-12 02:28:55,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:28:55,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:28:55,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:28:55,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:28:55,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:28:55,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:28:55,728 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 02:28:55,864 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:28:55,866 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:28:56,114 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:28:56,160 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:28:56,169 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-12 02:28:56,185 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:28:56 BoogieIcfgContainer [2023-11-12 02:28:56,186 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:28:56,190 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:28:56,190 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:28:56,194 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:28:56,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:28:54" (1/3) ... [2023-11-12 02:28:56,195 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f1ea7b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:28:56, skipping insertion in model container [2023-11-12 02:28:56,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:28:55" (2/3) ... [2023-11-12 02:28:56,195 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f1ea7b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:28:56, skipping insertion in model container [2023-11-12 02:28:56,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:28:56" (3/3) ... [2023-11-12 02:28:56,197 INFO L112 eAbstractionObserver]: Analyzing ICFG sssc12.i [2023-11-12 02:28:56,210 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:28:56,221 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:28:56,222 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-12 02:28:56,223 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:28:56,308 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:28:56,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 94 transitions, 192 flow [2023-11-12 02:28:56,398 INFO L124 PetriNetUnfolderBase]: 8/106 cut-off events. [2023-11-12 02:28:56,399 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:28:56,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 106 events. 8/106 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 106 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 62. Up to 4 conditions per place. [2023-11-12 02:28:56,405 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 94 transitions, 192 flow [2023-11-12 02:28:56,410 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 94 transitions, 192 flow [2023-11-12 02:28:56,414 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:28:56,425 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 90 places, 94 transitions, 192 flow [2023-11-12 02:28:56,428 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 90 places, 94 transitions, 192 flow [2023-11-12 02:28:56,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 90 places, 94 transitions, 192 flow [2023-11-12 02:28:56,463 INFO L124 PetriNetUnfolderBase]: 8/106 cut-off events. [2023-11-12 02:28:56,464 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:28:56,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 106 events. 8/106 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 106 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 62. Up to 4 conditions per place. [2023-11-12 02:28:56,467 INFO L119 LiptonReduction]: Number of co-enabled transitions 1440 [2023-11-12 02:29:00,559 INFO L134 LiptonReduction]: Checked pairs total: 1244 [2023-11-12 02:29:00,560 INFO L136 LiptonReduction]: Total number of compositions: 108 [2023-11-12 02:29:00,587 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:29:00,599 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;@7482b511, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:29:00,599 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-12 02:29:00,603 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:29:00,604 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2023-11-12 02:29:00,604 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:29:00,604 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:29:00,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-12 02:29:00,605 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-12 02:29:00,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:00,615 INFO L85 PathProgramCache]: Analyzing trace with hash 13804362, now seen corresponding path program 1 times [2023-11-12 02:29:00,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:00,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834090801] [2023-11-12 02:29:00,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:00,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:00,962 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 02:29:00,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:00,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834090801] [2023-11-12 02:29:00,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834090801] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:00,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:00,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:29:00,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140585216] [2023-11-12 02:29:00,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:00,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:29:00,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:01,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:29:01,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:29:01,090 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 202 [2023-11-12 02:29:01,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 15 transitions, 34 flow. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 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 02:29:01,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:29:01,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 202 [2023-11-12 02:29:01,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:29:01,132 INFO L124 PetriNetUnfolderBase]: 9/24 cut-off events. [2023-11-12 02:29:01,132 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:29:01,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 24 events. 9/24 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 38 event pairs, 0 based on Foata normal form. 0/18 useless extension candidates. Maximal degree in co-relation 40. Up to 19 conditions per place. [2023-11-12 02:29:01,134 INFO L140 encePairwiseOnDemand]: 194/202 looper letters, 8 selfloop transitions, 2 changer transitions 0/11 dead transitions. [2023-11-12 02:29:01,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 13 places, 11 transitions, 46 flow [2023-11-12 02:29:01,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:29:01,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:29:01,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 248 transitions. [2023-11-12 02:29:01,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40924092409240925 [2023-11-12 02:29:01,152 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 248 transitions. [2023-11-12 02:29:01,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 248 transitions. [2023-11-12 02:29:01,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:29:01,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 248 transitions. [2023-11-12 02:29:01,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.66666666666667) internal successors, (248), 3 states have internal predecessors, (248), 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 02:29:01,167 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 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 02:29:01,168 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 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 02:29:01,170 INFO L175 Difference]: Start difference. First operand has 17 places, 15 transitions, 34 flow. Second operand 3 states and 248 transitions. [2023-11-12 02:29:01,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 13 places, 11 transitions, 46 flow [2023-11-12 02:29:01,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 13 places, 11 transitions, 46 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:29:01,175 INFO L231 Difference]: Finished difference. Result has 13 places, 9 transitions, 26 flow [2023-11-12 02:29:01,177 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=11, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=26, PETRI_PLACES=13, PETRI_TRANSITIONS=9} [2023-11-12 02:29:01,181 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, -4 predicate places. [2023-11-12 02:29:01,182 INFO L495 AbstractCegarLoop]: Abstraction has has 13 places, 9 transitions, 26 flow [2023-11-12 02:29:01,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 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 02:29:01,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:29:01,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:29:01,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:29:01,184 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-12 02:29:01,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:01,185 INFO L85 PathProgramCache]: Analyzing trace with hash 427936260, now seen corresponding path program 1 times [2023-11-12 02:29:01,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:01,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585164088] [2023-11-12 02:29:01,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:01,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:01,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:01,383 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 02:29:01,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:01,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585164088] [2023-11-12 02:29:01,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585164088] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:01,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:01,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:29:01,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797553460] [2023-11-12 02:29:01,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:01,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:29:01,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:01,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:29:01,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:29:01,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 202 [2023-11-12 02:29:01,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 13 places, 9 transitions, 26 flow. Second operand has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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 02:29:01,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:29:01,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 202 [2023-11-12 02:29:01,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:29:01,452 INFO L124 PetriNetUnfolderBase]: 7/19 cut-off events. [2023-11-12 02:29:01,453 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:29:01,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47 conditions, 19 events. 7/19 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 23 event pairs, 4 based on Foata normal form. 0/16 useless extension candidates. Maximal degree in co-relation 33. Up to 18 conditions per place. [2023-11-12 02:29:01,454 INFO L140 encePairwiseOnDemand]: 200/202 looper letters, 6 selfloop transitions, 1 changer transitions 0/8 dead transitions. [2023-11-12 02:29:01,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 8 transitions, 38 flow [2023-11-12 02:29:01,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:29:01,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:29:01,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 254 transitions. [2023-11-12 02:29:01,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41914191419141916 [2023-11-12 02:29:01,465 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 254 transitions. [2023-11-12 02:29:01,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 254 transitions. [2023-11-12 02:29:01,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:29:01,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 254 transitions. [2023-11-12 02:29:01,470 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 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 02:29:01,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 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 02:29:01,476 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 202.0) internal successors, (808), 4 states have internal predecessors, (808), 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 02:29:01,477 INFO L175 Difference]: Start difference. First operand has 13 places, 9 transitions, 26 flow. Second operand 3 states and 254 transitions. [2023-11-12 02:29:01,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 8 transitions, 38 flow [2023-11-12 02:29:01,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 12 places, 8 transitions, 34 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:29:01,479 INFO L231 Difference]: Finished difference. Result has 12 places, 8 transitions, 22 flow [2023-11-12 02:29:01,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=202, PETRI_DIFFERENCE_MINUEND_FLOW=20, PETRI_DIFFERENCE_MINUEND_PLACES=10, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=22, PETRI_PLACES=12, PETRI_TRANSITIONS=8} [2023-11-12 02:29:01,481 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, -5 predicate places. [2023-11-12 02:29:01,482 INFO L495 AbstractCegarLoop]: Abstraction has has 12 places, 8 transitions, 22 flow [2023-11-12 02:29:01,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 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 02:29:01,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:29:01,489 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-12 02:29:01,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:29:01,490 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 10 more)] === [2023-11-12 02:29:01,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:01,498 INFO L85 PathProgramCache]: Analyzing trace with hash 381044211, now seen corresponding path program 1 times [2023-11-12 02:29:01,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:01,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385657074] [2023-11-12 02:29:01,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:01,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:01,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:29:01,521 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:29:01,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:29:01,552 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:29:01,552 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:29:01,554 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-11-12 02:29:01,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 13 remaining) [2023-11-12 02:29:01,556 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 13 remaining) [2023-11-12 02:29:01,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 13 remaining) [2023-11-12 02:29:01,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 13 remaining) [2023-11-12 02:29:01,557 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 13 remaining) [2023-11-12 02:29:01,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 13 remaining) [2023-11-12 02:29:01,558 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 13 remaining) [2023-11-12 02:29:01,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 13 remaining) [2023-11-12 02:29:01,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 13 remaining) [2023-11-12 02:29:01,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 13 remaining) [2023-11-12 02:29:01,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 13 remaining) [2023-11-12 02:29:01,560 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 13 remaining) [2023-11-12 02:29:01,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:29:01,561 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-12 02:29:01,564 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 02:29:01,564 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-12 02:29:01,599 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:29:01,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 143 transitions, 296 flow [2023-11-12 02:29:01,643 INFO L124 PetriNetUnfolderBase]: 14/169 cut-off events. [2023-11-12 02:29:01,643 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:29:01,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 169 events. 14/169 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 377 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 110. Up to 6 conditions per place. [2023-11-12 02:29:01,646 INFO L82 GeneralOperation]: Start removeDead. Operand has 136 places, 143 transitions, 296 flow [2023-11-12 02:29:01,649 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 143 transitions, 296 flow [2023-11-12 02:29:01,649 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:29:01,649 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 143 transitions, 296 flow [2023-11-12 02:29:01,650 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 143 transitions, 296 flow [2023-11-12 02:29:01,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 143 transitions, 296 flow [2023-11-12 02:29:01,680 INFO L124 PetriNetUnfolderBase]: 14/169 cut-off events. [2023-11-12 02:29:01,680 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:29:01,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 169 events. 14/169 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 377 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 110. Up to 6 conditions per place. [2023-11-12 02:29:01,690 INFO L119 LiptonReduction]: Number of co-enabled transitions 7584 [2023-11-12 02:29:05,151 INFO L134 LiptonReduction]: Checked pairs total: 22056 [2023-11-12 02:29:05,151 INFO L136 LiptonReduction]: Total number of compositions: 133 [2023-11-12 02:29:05,154 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:29:05,155 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;@7482b511, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:29:05,155 INFO L358 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2023-11-12 02:29:05,157 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:29:05,158 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-11-12 02:29:05,158 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:29:05,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:29:05,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:29:05,158 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-12 02:29:05,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:05,159 INFO L85 PathProgramCache]: Analyzing trace with hash 734424619, now seen corresponding path program 1 times [2023-11-12 02:29:05,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:05,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687314892] [2023-11-12 02:29:05,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:05,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:05,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:05,234 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 02:29:05,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:05,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687314892] [2023-11-12 02:29:05,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687314892] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:05,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:05,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:29:05,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655418384] [2023-11-12 02:29:05,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:05,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:29:05,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:05,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:29:05,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:29:05,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 276 [2023-11-12 02:29:05,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 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 02:29:05,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:29:05,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 276 [2023-11-12 02:29:05,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:29:05,537 INFO L124 PetriNetUnfolderBase]: 540/990 cut-off events. [2023-11-12 02:29:05,537 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2023-11-12 02:29:05,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1909 conditions, 990 events. 540/990 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 5591 event pairs, 248 based on Foata normal form. 32/806 useless extension candidates. Maximal degree in co-relation 806. Up to 476 conditions per place. [2023-11-12 02:29:05,549 INFO L140 encePairwiseOnDemand]: 262/276 looper letters, 43 selfloop transitions, 7 changer transitions 0/65 dead transitions. [2023-11-12 02:29:05,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 65 transitions, 245 flow [2023-11-12 02:29:05,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:29:05,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:29:05,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 402 transitions. [2023-11-12 02:29:05,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4855072463768116 [2023-11-12 02:29:05,552 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 402 transitions. [2023-11-12 02:29:05,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 402 transitions. [2023-11-12 02:29:05,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:29:05,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 402 transitions. [2023-11-12 02:29:05,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 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 02:29:05,557 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 276.0) internal successors, (1104), 4 states have internal predecessors, (1104), 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 02:29:05,558 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 276.0) internal successors, (1104), 4 states have internal predecessors, (1104), 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 02:29:05,558 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 102 flow. Second operand 3 states and 402 transitions. [2023-11-12 02:29:05,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 65 transitions, 245 flow [2023-11-12 02:29:05,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 65 transitions, 245 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:29:05,561 INFO L231 Difference]: Finished difference. Result has 48 places, 49 transitions, 156 flow [2023-11-12 02:29:05,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=48, PETRI_TRANSITIONS=49} [2023-11-12 02:29:05,563 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 1 predicate places. [2023-11-12 02:29:05,563 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 49 transitions, 156 flow [2023-11-12 02:29:05,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 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 02:29:05,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:29:05,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 02:29:05,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:29:05,564 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-12 02:29:05,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:05,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1292327314, now seen corresponding path program 1 times [2023-11-12 02:29:05,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:05,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252658493] [2023-11-12 02:29:05,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:05,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:05,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:29:05,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:05,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252658493] [2023-11-12 02:29:05,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252658493] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:05,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:05,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:29:05,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093948988] [2023-11-12 02:29:05,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:05,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:29:05,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:05,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:29:05,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:29:05,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 276 [2023-11-12 02:29:05,687 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 49 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 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 02:29:05,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:29:05,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 276 [2023-11-12 02:29:05,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:29:05,878 INFO L124 PetriNetUnfolderBase]: 432/784 cut-off events. [2023-11-12 02:29:05,879 INFO L125 PetriNetUnfolderBase]: For 281/281 co-relation queries the response was YES. [2023-11-12 02:29:05,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1697 conditions, 784 events. 432/784 cut-off events. For 281/281 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4097 event pairs, 172 based on Foata normal form. 52/663 useless extension candidates. Maximal degree in co-relation 890. Up to 356 conditions per place. [2023-11-12 02:29:05,887 INFO L140 encePairwiseOnDemand]: 265/276 looper letters, 39 selfloop transitions, 7 changer transitions 0/61 dead transitions. [2023-11-12 02:29:05,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 61 transitions, 269 flow [2023-11-12 02:29:05,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:29:05,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:29:05,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2023-11-12 02:29:05,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47342995169082125 [2023-11-12 02:29:05,890 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 392 transitions. [2023-11-12 02:29:05,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 392 transitions. [2023-11-12 02:29:05,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:29:05,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 392 transitions. [2023-11-12 02:29:05,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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 02:29:05,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 276.0) internal successors, (1104), 4 states have internal predecessors, (1104), 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 02:29:05,896 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 276.0) internal successors, (1104), 4 states have internal predecessors, (1104), 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 02:29:05,896 INFO L175 Difference]: Start difference. First operand has 48 places, 49 transitions, 156 flow. Second operand 3 states and 392 transitions. [2023-11-12 02:29:05,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 61 transitions, 269 flow [2023-11-12 02:29:05,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 61 transitions, 255 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:29:05,900 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 140 flow [2023-11-12 02:29:05,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2023-11-12 02:29:05,902 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 1 predicate places. [2023-11-12 02:29:05,902 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 140 flow [2023-11-12 02:29:05,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 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 02:29:05,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:29:05,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:05,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:29:05,903 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-12 02:29:05,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:05,904 INFO L85 PathProgramCache]: Analyzing trace with hash -363169451, now seen corresponding path program 1 times [2023-11-12 02:29:05,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:05,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085120318] [2023-11-12 02:29:05,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:05,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:05,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:05,971 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 02:29:05,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:05,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085120318] [2023-11-12 02:29:05,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085120318] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:05,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:05,972 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:29:05,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661338483] [2023-11-12 02:29:05,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:05,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:29:05,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:05,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:29:05,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:29:06,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 276 [2023-11-12 02:29:06,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 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 02:29:06,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:29:06,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 276 [2023-11-12 02:29:06,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:29:06,151 INFO L124 PetriNetUnfolderBase]: 421/816 cut-off events. [2023-11-12 02:29:06,152 INFO L125 PetriNetUnfolderBase]: For 171/181 co-relation queries the response was YES. [2023-11-12 02:29:06,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1691 conditions, 816 events. 421/816 cut-off events. For 171/181 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4719 event pairs, 168 based on Foata normal form. 0/674 useless extension candidates. Maximal degree in co-relation 940. Up to 371 conditions per place. [2023-11-12 02:29:06,160 INFO L140 encePairwiseOnDemand]: 272/276 looper letters, 36 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-11-12 02:29:06,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 57 transitions, 249 flow [2023-11-12 02:29:06,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:29:06,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:29:06,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 392 transitions. [2023-11-12 02:29:06,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47342995169082125 [2023-11-12 02:29:06,163 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 392 transitions. [2023-11-12 02:29:06,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 392 transitions. [2023-11-12 02:29:06,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:29:06,164 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 392 transitions. [2023-11-12 02:29:06,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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 02:29:06,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 276.0) internal successors, (1104), 4 states have internal predecessors, (1104), 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 02:29:06,169 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 276.0) internal successors, (1104), 4 states have internal predecessors, (1104), 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 02:29:06,169 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 140 flow. Second operand 3 states and 392 transitions. [2023-11-12 02:29:06,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 57 transitions, 249 flow [2023-11-12 02:29:06,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 57 transitions, 249 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:29:06,172 INFO L231 Difference]: Finished difference. Result has 51 places, 45 transitions, 150 flow [2023-11-12 02:29:06,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=276, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=51, PETRI_TRANSITIONS=45} [2023-11-12 02:29:06,174 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 4 predicate places. [2023-11-12 02:29:06,174 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 45 transitions, 150 flow [2023-11-12 02:29:06,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 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 02:29:06,175 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:29:06,175 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-12 02:29:06,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:29:06,175 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-12 02:29:06,176 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:06,176 INFO L85 PathProgramCache]: Analyzing trace with hash -2021680720, now seen corresponding path program 1 times [2023-11-12 02:29:06,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:06,176 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832642727] [2023-11-12 02:29:06,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:06,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:06,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:29:06,190 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:29:06,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:29:06,204 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:29:06,205 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:29:06,205 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 19 remaining) [2023-11-12 02:29:06,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 19 remaining) [2023-11-12 02:29:06,205 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 19 remaining) [2023-11-12 02:29:06,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 19 remaining) [2023-11-12 02:29:06,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 19 remaining) [2023-11-12 02:29:06,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 19 remaining) [2023-11-12 02:29:06,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 19 remaining) [2023-11-12 02:29:06,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 19 remaining) [2023-11-12 02:29:06,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 19 remaining) [2023-11-12 02:29:06,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 19 remaining) [2023-11-12 02:29:06,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 19 remaining) [2023-11-12 02:29:06,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 19 remaining) [2023-11-12 02:29:06,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 19 remaining) [2023-11-12 02:29:06,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 19 remaining) [2023-11-12 02:29:06,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 19 remaining) [2023-11-12 02:29:06,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 19 remaining) [2023-11-12 02:29:06,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 19 remaining) [2023-11-12 02:29:06,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 19 remaining) [2023-11-12 02:29:06,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 19 remaining) [2023-11-12 02:29:06,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:29:06,209 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-12 02:29:06,210 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 02:29:06,210 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-12 02:29:06,238 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:29:06,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 192 transitions, 402 flow [2023-11-12 02:29:06,277 INFO L124 PetriNetUnfolderBase]: 20/232 cut-off events. [2023-11-12 02:29:06,277 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-12 02:29:06,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 232 events. 20/232 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 666 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 173. Up to 8 conditions per place. [2023-11-12 02:29:06,279 INFO L82 GeneralOperation]: Start removeDead. Operand has 182 places, 192 transitions, 402 flow [2023-11-12 02:29:06,282 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 182 places, 192 transitions, 402 flow [2023-11-12 02:29:06,283 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:29:06,283 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 182 places, 192 transitions, 402 flow [2023-11-12 02:29:06,283 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 182 places, 192 transitions, 402 flow [2023-11-12 02:29:06,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 192 transitions, 402 flow [2023-11-12 02:29:06,318 INFO L124 PetriNetUnfolderBase]: 20/232 cut-off events. [2023-11-12 02:29:06,318 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-12 02:29:06,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 232 events. 20/232 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 666 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 173. Up to 8 conditions per place. [2023-11-12 02:29:06,332 INFO L119 LiptonReduction]: Number of co-enabled transitions 18432 [2023-11-12 02:29:10,566 INFO L134 LiptonReduction]: Checked pairs total: 51270 [2023-11-12 02:29:10,566 INFO L136 LiptonReduction]: Total number of compositions: 173 [2023-11-12 02:29:10,569 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:29:10,570 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;@7482b511, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:29:10,570 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-11-12 02:29:10,573 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:29:10,573 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-11-12 02:29:10,573 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:29:10,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:29:10,573 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:29:10,573 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-12 02:29:10,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:10,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1129824977, now seen corresponding path program 1 times [2023-11-12 02:29:10,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:10,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084294415] [2023-11-12 02:29:10,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:10,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:10,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:10,619 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 02:29:10,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:10,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084294415] [2023-11-12 02:29:10,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084294415] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:10,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:10,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:29:10,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354719634] [2023-11-12 02:29:10,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:10,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:29:10,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:10,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:29:10,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:29:10,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 365 [2023-11-12 02:29:10,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 66 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 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 02:29:10,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:29:10,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 365 [2023-11-12 02:29:10,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:29:12,781 INFO L124 PetriNetUnfolderBase]: 10292/15280 cut-off events. [2023-11-12 02:29:12,781 INFO L125 PetriNetUnfolderBase]: For 1099/1099 co-relation queries the response was YES. [2023-11-12 02:29:12,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30190 conditions, 15280 events. 10292/15280 cut-off events. For 1099/1099 co-relation queries the response was YES. Maximal size of possible extension queue 996. Compared 104952 event pairs, 4256 based on Foata normal form. 464/12298 useless extension candidates. Maximal degree in co-relation 4756. Up to 7441 conditions per place. [2023-11-12 02:29:12,938 INFO L140 encePairwiseOnDemand]: 345/365 looper letters, 64 selfloop transitions, 10 changer transitions 0/95 dead transitions. [2023-11-12 02:29:12,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 95 transitions, 368 flow [2023-11-12 02:29:12,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:29:12,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:29:12,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 541 transitions. [2023-11-12 02:29:12,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4940639269406393 [2023-11-12 02:29:12,942 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 541 transitions. [2023-11-12 02:29:12,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 541 transitions. [2023-11-12 02:29:12,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:29:12,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 541 transitions. [2023-11-12 02:29:12,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 180.33333333333334) internal successors, (541), 3 states have internal predecessors, (541), 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 02:29:12,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 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 02:29:12,953 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 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 02:29:12,954 INFO L175 Difference]: Start difference. First operand has 67 places, 66 transitions, 150 flow. Second operand 3 states and 541 transitions. [2023-11-12 02:29:12,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 95 transitions, 368 flow [2023-11-12 02:29:12,956 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 95 transitions, 364 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-11-12 02:29:12,958 INFO L231 Difference]: Finished difference. Result has 67 places, 71 transitions, 228 flow [2023-11-12 02:29:12,959 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=67, PETRI_TRANSITIONS=71} [2023-11-12 02:29:12,961 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 0 predicate places. [2023-11-12 02:29:12,962 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 71 transitions, 228 flow [2023-11-12 02:29:12,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 152.66666666666666) internal successors, (458), 3 states have internal predecessors, (458), 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 02:29:12,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:29:12,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 02:29:12,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:29:12,963 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-12 02:29:12,964 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:12,964 INFO L85 PathProgramCache]: Analyzing trace with hash 664836801, now seen corresponding path program 1 times [2023-11-12 02:29:12,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:12,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [199434919] [2023-11-12 02:29:12,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:12,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:13,019 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 02:29:13,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:13,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [199434919] [2023-11-12 02:29:13,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [199434919] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:13,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:13,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:29:13,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092266856] [2023-11-12 02:29:13,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:13,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:29:13,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:13,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:29:13,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:29:13,092 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 151 out of 365 [2023-11-12 02:29:13,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 71 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 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 02:29:13,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:29:13,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 151 of 365 [2023-11-12 02:29:13,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:29:14,754 INFO L124 PetriNetUnfolderBase]: 8030/11898 cut-off events. [2023-11-12 02:29:14,754 INFO L125 PetriNetUnfolderBase]: For 4609/4609 co-relation queries the response was YES. [2023-11-12 02:29:14,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26567 conditions, 11898 events. 8030/11898 cut-off events. For 4609/4609 co-relation queries the response was YES. Maximal size of possible extension queue 753. Compared 77471 event pairs, 2978 based on Foata normal form. 770/9994 useless extension candidates. Maximal degree in co-relation 16797. Up to 6313 conditions per place. [2023-11-12 02:29:14,859 INFO L140 encePairwiseOnDemand]: 349/365 looper letters, 73 selfloop transitions, 13 changer transitions 0/107 dead transitions. [2023-11-12 02:29:14,859 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 107 transitions, 512 flow [2023-11-12 02:29:14,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:29:14,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:29:14,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 533 transitions. [2023-11-12 02:29:14,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4867579908675799 [2023-11-12 02:29:14,862 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 533 transitions. [2023-11-12 02:29:14,863 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 533 transitions. [2023-11-12 02:29:14,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:29:14,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 533 transitions. [2023-11-12 02:29:14,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 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 02:29:14,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 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 02:29:14,869 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 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 02:29:14,869 INFO L175 Difference]: Start difference. First operand has 67 places, 71 transitions, 228 flow. Second operand 3 states and 533 transitions. [2023-11-12 02:29:14,869 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 107 transitions, 512 flow [2023-11-12 02:29:14,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 107 transitions, 486 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:29:14,887 INFO L231 Difference]: Finished difference. Result has 69 places, 83 transitions, 356 flow [2023-11-12 02:29:14,888 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=356, PETRI_PLACES=69, PETRI_TRANSITIONS=83} [2023-11-12 02:29:14,889 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 2 predicate places. [2023-11-12 02:29:14,890 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 83 transitions, 356 flow [2023-11-12 02:29:14,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 153.0) internal successors, (459), 3 states have internal predecessors, (459), 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 02:29:14,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:29:14,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:14,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:29:14,891 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-12 02:29:14,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:14,892 INFO L85 PathProgramCache]: Analyzing trace with hash 2059990283, now seen corresponding path program 1 times [2023-11-12 02:29:14,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:14,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800582510] [2023-11-12 02:29:14,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:14,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:14,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:14,976 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 02:29:14,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:14,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800582510] [2023-11-12 02:29:14,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800582510] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:14,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:14,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:29:14,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569796190] [2023-11-12 02:29:14,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:14,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:29:14,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:14,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:29:14,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:29:15,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 365 [2023-11-12 02:29:15,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 83 transitions, 356 flow. Second operand has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 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 02:29:15,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:29:15,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 365 [2023-11-12 02:29:15,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:29:16,366 INFO L124 PetriNetUnfolderBase]: 7281/11037 cut-off events. [2023-11-12 02:29:16,366 INFO L125 PetriNetUnfolderBase]: For 6342/9153 co-relation queries the response was YES. [2023-11-12 02:29:16,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25691 conditions, 11037 events. 7281/11037 cut-off events. For 6342/9153 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 73768 event pairs, 3236 based on Foata normal form. 214/8784 useless extension candidates. Maximal degree in co-relation 21363. Up to 5497 conditions per place. [2023-11-12 02:29:16,461 INFO L140 encePairwiseOnDemand]: 361/365 looper letters, 75 selfloop transitions, 2 changer transitions 0/114 dead transitions. [2023-11-12 02:29:16,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 114 transitions, 642 flow [2023-11-12 02:29:16,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:29:16,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:29:16,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 539 transitions. [2023-11-12 02:29:16,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4922374429223744 [2023-11-12 02:29:16,465 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 539 transitions. [2023-11-12 02:29:16,465 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 539 transitions. [2023-11-12 02:29:16,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:29:16,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 539 transitions. [2023-11-12 02:29:16,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.66666666666666) internal successors, (539), 3 states have internal predecessors, (539), 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 02:29:16,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 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 02:29:16,472 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 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 02:29:16,473 INFO L175 Difference]: Start difference. First operand has 69 places, 83 transitions, 356 flow. Second operand 3 states and 539 transitions. [2023-11-12 02:29:16,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 114 transitions, 642 flow [2023-11-12 02:29:16,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 114 transitions, 604 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:29:16,484 INFO L231 Difference]: Finished difference. Result has 70 places, 83 transitions, 340 flow [2023-11-12 02:29:16,485 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=340, PETRI_PLACES=70, PETRI_TRANSITIONS=83} [2023-11-12 02:29:16,489 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 3 predicate places. [2023-11-12 02:29:16,489 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 83 transitions, 340 flow [2023-11-12 02:29:16,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 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 02:29:16,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:29:16,490 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:16,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:29:16,490 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-12 02:29:16,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:16,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1590238886, now seen corresponding path program 1 times [2023-11-12 02:29:16,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:16,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147586953] [2023-11-12 02:29:16,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:16,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:16,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:16,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:29:16,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:16,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147586953] [2023-11-12 02:29:16,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147586953] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:16,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:16,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:29:16,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503168166] [2023-11-12 02:29:16,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:16,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:29:16,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:16,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:29:16,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:29:16,609 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 365 [2023-11-12 02:29:16,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 83 transitions, 340 flow. Second operand has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 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 02:29:16,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:29:16,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 365 [2023-11-12 02:29:16,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:29:18,622 INFO L124 PetriNetUnfolderBase]: 7773/12210 cut-off events. [2023-11-12 02:29:18,622 INFO L125 PetriNetUnfolderBase]: For 5441/7409 co-relation queries the response was YES. [2023-11-12 02:29:18,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28068 conditions, 12210 events. 7773/12210 cut-off events. For 5441/7409 co-relation queries the response was YES. Maximal size of possible extension queue 706. Compared 88902 event pairs, 3371 based on Foata normal form. 220/10360 useless extension candidates. Maximal degree in co-relation 14446. Up to 6216 conditions per place. [2023-11-12 02:29:18,710 INFO L140 encePairwiseOnDemand]: 361/365 looper letters, 74 selfloop transitions, 2 changer transitions 0/113 dead transitions. [2023-11-12 02:29:18,710 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 113 transitions, 612 flow [2023-11-12 02:29:18,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:29:18,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:29:18,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 538 transitions. [2023-11-12 02:29:18,713 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.491324200913242 [2023-11-12 02:29:18,714 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 538 transitions. [2023-11-12 02:29:18,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 538 transitions. [2023-11-12 02:29:18,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:29:18,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 538 transitions. [2023-11-12 02:29:18,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 179.33333333333334) internal successors, (538), 3 states have internal predecessors, (538), 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 02:29:18,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 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 02:29:18,720 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 365.0) internal successors, (1460), 4 states have internal predecessors, (1460), 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 02:29:18,720 INFO L175 Difference]: Start difference. First operand has 70 places, 83 transitions, 340 flow. Second operand 3 states and 538 transitions. [2023-11-12 02:29:18,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 113 transitions, 612 flow [2023-11-12 02:29:18,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 113 transitions, 606 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:29:18,727 INFO L231 Difference]: Finished difference. Result has 71 places, 83 transitions, 346 flow [2023-11-12 02:29:18,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=346, PETRI_PLACES=71, PETRI_TRANSITIONS=83} [2023-11-12 02:29:18,728 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 4 predicate places. [2023-11-12 02:29:18,728 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 83 transitions, 346 flow [2023-11-12 02:29:18,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.0) internal successors, (489), 3 states have internal predecessors, (489), 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 02:29:18,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:29:18,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:29:18,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:29:18,729 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-12 02:29:18,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:18,730 INFO L85 PathProgramCache]: Analyzing trace with hash -979887308, now seen corresponding path program 1 times [2023-11-12 02:29:18,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:18,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940671122] [2023-11-12 02:29:18,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:18,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:18,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:18,801 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 02:29:18,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:18,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940671122] [2023-11-12 02:29:18,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940671122] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:18,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:18,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:29:18,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499107625] [2023-11-12 02:29:18,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:18,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:29:18,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:18,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:29:18,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:29:18,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 365 [2023-11-12 02:29:18,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 83 transitions, 346 flow. Second operand has 4 states, 4 states have (on average 147.25) internal successors, (589), 4 states have internal predecessors, (589), 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 02:29:18,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:29:18,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 365 [2023-11-12 02:29:18,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:29:20,995 INFO L124 PetriNetUnfolderBase]: 13773/20191 cut-off events. [2023-11-12 02:29:20,996 INFO L125 PetriNetUnfolderBase]: For 11517/11517 co-relation queries the response was YES. [2023-11-12 02:29:21,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51035 conditions, 20191 events. 13773/20191 cut-off events. For 11517/11517 co-relation queries the response was YES. Maximal size of possible extension queue 1323. Compared 143721 event pairs, 2523 based on Foata normal form. 0/17472 useless extension candidates. Maximal degree in co-relation 50844. Up to 9846 conditions per place. [2023-11-12 02:29:21,116 INFO L140 encePairwiseOnDemand]: 357/365 looper letters, 140 selfloop transitions, 10 changer transitions 0/170 dead transitions. [2023-11-12 02:29:21,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 170 transitions, 991 flow [2023-11-12 02:29:21,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:29:21,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:29:21,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 842 transitions. [2023-11-12 02:29:21,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46136986301369864 [2023-11-12 02:29:21,121 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 842 transitions. [2023-11-12 02:29:21,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 842 transitions. [2023-11-12 02:29:21,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:29:21,122 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 842 transitions. [2023-11-12 02:29:21,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 168.4) internal successors, (842), 5 states have internal predecessors, (842), 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 02:29:21,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 365.0) internal successors, (2190), 6 states have internal predecessors, (2190), 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 02:29:21,129 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 365.0) internal successors, (2190), 6 states have internal predecessors, (2190), 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 02:29:21,130 INFO L175 Difference]: Start difference. First operand has 71 places, 83 transitions, 346 flow. Second operand 5 states and 842 transitions. [2023-11-12 02:29:21,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 170 transitions, 991 flow [2023-11-12 02:29:21,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 170 transitions, 981 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:29:21,140 INFO L231 Difference]: Finished difference. Result has 74 places, 88 transitions, 396 flow [2023-11-12 02:29:21,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=365, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=396, PETRI_PLACES=74, PETRI_TRANSITIONS=88} [2023-11-12 02:29:21,141 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 7 predicate places. [2023-11-12 02:29:21,141 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 88 transitions, 396 flow [2023-11-12 02:29:21,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 147.25) internal successors, (589), 4 states have internal predecessors, (589), 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 02:29:21,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:29:21,142 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-11-12 02:29:21,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 02:29:21,142 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-12 02:29:21,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:21,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1472739418, now seen corresponding path program 1 times [2023-11-12 02:29:21,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:21,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285905751] [2023-11-12 02:29:21,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:21,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:21,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:29:21,158 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-12 02:29:21,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-12 02:29:21,171 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-12 02:29:21,171 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-12 02:29:21,172 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2023-11-12 02:29:21,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2023-11-12 02:29:21,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2023-11-12 02:29:21,172 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2023-11-12 02:29:21,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2023-11-12 02:29:21,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2023-11-12 02:29:21,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2023-11-12 02:29:21,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2023-11-12 02:29:21,173 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2023-11-12 02:29:21,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2023-11-12 02:29:21,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2023-11-12 02:29:21,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2023-11-12 02:29:21,174 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2023-11-12 02:29:21,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2023-11-12 02:29:21,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2023-11-12 02:29:21,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2023-11-12 02:29:21,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2023-11-12 02:29:21,175 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2023-11-12 02:29:21,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2023-11-12 02:29:21,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2023-11-12 02:29:21,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2023-11-12 02:29:21,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2023-11-12 02:29:21,176 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2023-11-12 02:29:21,177 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2023-11-12 02:29:21,177 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thrErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2023-11-12 02:29:21,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 02:29:21,177 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-12 02:29:21,178 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-12 02:29:21,178 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-12 02:29:21,222 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:29:21,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 241 transitions, 510 flow [2023-11-12 02:29:21,392 INFO L124 PetriNetUnfolderBase]: 26/295 cut-off events. [2023-11-12 02:29:21,392 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-12 02:29:21,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 295 events. 26/295 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 965 event pairs, 0 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 240. Up to 10 conditions per place. [2023-11-12 02:29:21,394 INFO L82 GeneralOperation]: Start removeDead. Operand has 228 places, 241 transitions, 510 flow [2023-11-12 02:29:21,402 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 228 places, 241 transitions, 510 flow [2023-11-12 02:29:21,402 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:29:21,402 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 228 places, 241 transitions, 510 flow [2023-11-12 02:29:21,402 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 228 places, 241 transitions, 510 flow [2023-11-12 02:29:21,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 241 transitions, 510 flow [2023-11-12 02:29:21,452 INFO L124 PetriNetUnfolderBase]: 26/295 cut-off events. [2023-11-12 02:29:21,452 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-12 02:29:21,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 314 conditions, 295 events. 26/295 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 965 event pairs, 0 based on Foata normal form. 0/240 useless extension candidates. Maximal degree in co-relation 240. Up to 10 conditions per place. [2023-11-12 02:29:21,474 INFO L119 LiptonReduction]: Number of co-enabled transitions 33984 [2023-11-12 02:29:26,292 INFO L134 LiptonReduction]: Checked pairs total: 108182 [2023-11-12 02:29:26,293 INFO L136 LiptonReduction]: Total number of compositions: 215 [2023-11-12 02:29:26,294 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:29:26,295 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;@7482b511, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:29:26,295 INFO L358 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2023-11-12 02:29:26,297 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:29:26,297 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-11-12 02:29:26,297 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:29:26,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:29:26,298 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-12 02:29:26,298 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thrErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, thrErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 28 more)] === [2023-11-12 02:29:26,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:29:26,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1605093615, now seen corresponding path program 1 times [2023-11-12 02:29:26,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:29:26,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039469044] [2023-11-12 02:29:26,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:29:26,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:29:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:29:26,408 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 02:29:26,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:29:26,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039469044] [2023-11-12 02:29:26,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039469044] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:29:26,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:29:26,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:29:26,409 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464122051] [2023-11-12 02:29:26,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:29:26,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:29:26,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:29:26,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:29:26,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:29:26,494 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 188 out of 456 [2023-11-12 02:29:26,495 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 86 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 189.66666666666666) internal successors, (569), 3 states have internal predecessors, (569), 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 02:29:26,495 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:29:26,496 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 188 of 456 [2023-11-12 02:29:26,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:29:39,953 INFO L124 PetriNetUnfolderBase]: 111541/144305 cut-off events. [2023-11-12 02:29:39,953 INFO L125 PetriNetUnfolderBase]: For 13703/13703 co-relation queries the response was YES.