./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e7bb482b 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_76eb9d5e-f6ec-48a2-b72a-b8582a07a1ff/bin/uautomizer-verify-WvqO1wxjHP/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76eb9d5e-f6ec-48a2-b72a-b8582a07a1ff/bin/uautomizer-verify-WvqO1wxjHP/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76eb9d5e-f6ec-48a2-b72a-b8582a07a1ff/bin/uautomizer-verify-WvqO1wxjHP/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76eb9d5e-f6ec-48a2-b72a-b8582a07a1ff/bin/uautomizer-verify-WvqO1wxjHP/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76eb9d5e-f6ec-48a2-b72a-b8582a07a1ff/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76eb9d5e-f6ec-48a2-b72a-b8582a07a1ff/bin/uautomizer-verify-WvqO1wxjHP --witnessprinter.witness.filename witness.graphml --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 3465c34fa1c26a5c7a3494350123ab41e5828c33cb08ac3f67b81737d460e559 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-e7bb482 [2023-11-06 22:57:34,484 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-06 22:57:34,569 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76eb9d5e-f6ec-48a2-b72a-b8582a07a1ff/bin/uautomizer-verify-WvqO1wxjHP/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-06 22:57:34,578 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-06 22:57:34,579 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-06 22:57:34,621 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-06 22:57:34,622 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-06 22:57:34,622 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-06 22:57:34,623 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-06 22:57:34,624 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-06 22:57:34,627 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-06 22:57:34,628 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-06 22:57:34,628 INFO L153 SettingsManager]: * Use SBE=true [2023-11-06 22:57:34,633 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-06 22:57:34,634 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-06 22:57:34,634 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-06 22:57:34,635 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-06 22:57:34,636 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-06 22:57:34,636 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-06 22:57:34,637 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-06 22:57:34,637 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-06 22:57:34,638 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-06 22:57:34,638 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-06 22:57:34,638 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-06 22:57:34,639 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-06 22:57:34,640 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-06 22:57:34,641 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-06 22:57:34,642 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-06 22:57:34,642 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-06 22:57:34,642 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-06 22:57:34,644 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:57:34,644 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-06 22:57:34,644 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-06 22:57:34,644 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-11-06 22:57:34,644 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-06 22:57:34,645 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-06 22:57:34,645 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-06 22:57:34,645 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-06 22:57:34,645 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-06 22:57:34,645 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-06 22:57:34,646 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-06 22:57:34,646 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_76eb9d5e-f6ec-48a2-b72a-b8582a07a1ff/bin/uautomizer-verify-WvqO1wxjHP/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76eb9d5e-f6ec-48a2-b72a-b8582a07a1ff/bin/uautomizer-verify-WvqO1wxjHP Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3465c34fa1c26a5c7a3494350123ab41e5828c33cb08ac3f67b81737d460e559 [2023-11-06 22:57:34,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-06 22:57:34,925 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-06 22:57:34,929 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-06 22:57:34,930 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-06 22:57:34,931 INFO L274 PluginConnector]: CDTParser initialized [2023-11-06 22:57:34,932 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76eb9d5e-f6ec-48a2-b72a-b8582a07a1ff/bin/uautomizer-verify-WvqO1wxjHP/../../sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i [2023-11-06 22:57:38,117 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-06 22:57:38,453 INFO L384 CDTParser]: Found 1 translation units. [2023-11-06 22:57:38,458 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76eb9d5e-f6ec-48a2-b72a-b8582a07a1ff/sv-benchmarks/c/goblint-regression/28-race_reach_61-invariant_racing.i [2023-11-06 22:57:38,482 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76eb9d5e-f6ec-48a2-b72a-b8582a07a1ff/bin/uautomizer-verify-WvqO1wxjHP/data/d7e158982/70578d867b27435799bcdf4032327408/FLAGd02835475 [2023-11-06 22:57:38,499 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76eb9d5e-f6ec-48a2-b72a-b8582a07a1ff/bin/uautomizer-verify-WvqO1wxjHP/data/d7e158982/70578d867b27435799bcdf4032327408 [2023-11-06 22:57:38,506 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-06 22:57:38,507 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-06 22:57:38,511 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-06 22:57:38,511 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-06 22:57:38,516 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-06 22:57:38,519 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:57:38" (1/1) ... [2023-11-06 22:57:38,520 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45954fd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:38, skipping insertion in model container [2023-11-06 22:57:38,521 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:57:38" (1/1) ... [2023-11-06 22:57:38,579 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-06 22:57:39,034 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:57:39,055 INFO L202 MainTranslator]: Completed pre-run [2023-11-06 22:57:39,127 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-06 22:57:39,174 INFO L206 MainTranslator]: Completed translation [2023-11-06 22:57:39,175 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:39 WrapperNode [2023-11-06 22:57:39,175 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-06 22:57:39,176 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-06 22:57:39,177 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-06 22:57:39,177 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-06 22:57:39,185 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:39" (1/1) ... [2023-11-06 22:57:39,200 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:39" (1/1) ... [2023-11-06 22:57:39,223 INFO L138 Inliner]: procedures = 170, calls = 33, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 108 [2023-11-06 22:57:39,224 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-06 22:57:39,225 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-06 22:57:39,225 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-06 22:57:39,225 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-06 22:57:39,234 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:39" (1/1) ... [2023-11-06 22:57:39,234 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:39" (1/1) ... [2023-11-06 22:57:39,246 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:39" (1/1) ... [2023-11-06 22:57:39,246 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:39" (1/1) ... [2023-11-06 22:57:39,253 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:39" (1/1) ... [2023-11-06 22:57:39,262 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:39" (1/1) ... [2023-11-06 22:57:39,265 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:39" (1/1) ... [2023-11-06 22:57:39,266 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:39" (1/1) ... [2023-11-06 22:57:39,270 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-06 22:57:39,271 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-06 22:57:39,271 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-06 22:57:39,271 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-06 22:57:39,278 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:39" (1/1) ... [2023-11-06 22:57:39,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-06 22:57:39,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76eb9d5e-f6ec-48a2-b72a-b8582a07a1ff/bin/uautomizer-verify-WvqO1wxjHP/z3 [2023-11-06 22:57:39,314 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76eb9d5e-f6ec-48a2-b72a-b8582a07a1ff/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-06 22:57:39,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76eb9d5e-f6ec-48a2-b72a-b8582a07a1ff/bin/uautomizer-verify-WvqO1wxjHP/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-06 22:57:39,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-06 22:57:39,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-06 22:57:39,359 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-06 22:57:39,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-06 22:57:39,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-06 22:57:39,359 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-06 22:57:39,360 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-06 22:57:39,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-06 22:57:39,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-06 22:57:39,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-06 22:57:39,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-06 22:57:39,362 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-06 22:57:39,494 INFO L236 CfgBuilder]: Building ICFG [2023-11-06 22:57:39,496 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-06 22:57:39,811 INFO L277 CfgBuilder]: Performing block encoding [2023-11-06 22:57:39,819 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-06 22:57:39,819 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-11-06 22:57:39,822 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:57:39 BoogieIcfgContainer [2023-11-06 22:57:39,822 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-06 22:57:39,824 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-06 22:57:39,824 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-06 22:57:39,827 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-06 22:57:39,828 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:57:38" (1/3) ... [2023-11-06 22:57:39,828 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b7d22e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:57:39, skipping insertion in model container [2023-11-06 22:57:39,829 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:57:39" (2/3) ... [2023-11-06 22:57:39,829 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b7d22e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:57:39, skipping insertion in model container [2023-11-06 22:57:39,829 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:57:39" (3/3) ... [2023-11-06 22:57:39,830 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_61-invariant_racing.i [2023-11-06 22:57:39,838 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-06 22:57:39,849 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-06 22:57:39,849 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-06 22:57:39,849 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-06 22:57:39,923 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-06 22:57:39,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 139 places, 156 transitions, 319 flow [2023-11-06 22:57:40,103 INFO L124 PetriNetUnfolderBase]: 32/228 cut-off events. [2023-11-06 22:57:40,105 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:57:40,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 228 events. 32/228 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 765 event pairs, 0 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 120. Up to 6 conditions per place. [2023-11-06 22:57:40,113 INFO L82 GeneralOperation]: Start removeDead. Operand has 139 places, 156 transitions, 319 flow [2023-11-06 22:57:40,126 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 137 places, 153 transitions, 313 flow [2023-11-06 22:57:40,129 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:57:40,145 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 153 transitions, 313 flow [2023-11-06 22:57:40,149 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 153 transitions, 313 flow [2023-11-06 22:57:40,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 153 transitions, 313 flow [2023-11-06 22:57:40,254 INFO L124 PetriNetUnfolderBase]: 31/225 cut-off events. [2023-11-06 22:57:40,255 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:57:40,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 225 events. 31/225 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 762 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 120. Up to 6 conditions per place. [2023-11-06 22:57:40,264 INFO L119 LiptonReduction]: Number of co-enabled transitions 6396 [2023-11-06 22:57:43,613 INFO L134 LiptonReduction]: Checked pairs total: 16007 [2023-11-06 22:57:43,613 INFO L136 LiptonReduction]: Total number of compositions: 128 [2023-11-06 22:57:43,629 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:57:43,636 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=LoopsAndPotentialCycles, 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;@119edf78, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:57:43,636 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-06 22:57:43,641 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:57:43,641 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-11-06 22:57:43,641 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:57:43,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:43,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-06 22:57:43,643 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:57:43,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:43,648 INFO L85 PathProgramCache]: Analyzing trace with hash 18135509, now seen corresponding path program 1 times [2023-11-06 22:57:43,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:43,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535522196] [2023-11-06 22:57:43,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:43,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:43,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:43,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:43,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:43,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535522196] [2023-11-06 22:57:43,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535522196] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:43,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:43,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-06 22:57:43,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135694872] [2023-11-06 22:57:43,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:43,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:57:43,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:43,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:57:43,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:57:43,989 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 284 [2023-11-06 22:57:43,992 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 66 transitions, 139 flow. Second operand has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 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) [2023-11-06 22:57:43,993 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:57:43,993 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 284 [2023-11-06 22:57:43,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:57:44,250 INFO L124 PetriNetUnfolderBase]: 341/756 cut-off events. [2023-11-06 22:57:44,250 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-06 22:57:44,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1465 conditions, 756 events. 341/756 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3798 event pairs, 0 based on Foata normal form. 55/618 useless extension candidates. Maximal degree in co-relation 1430. Up to 684 conditions per place. [2023-11-06 22:57:44,263 INFO L140 encePairwiseOnDemand]: 263/284 looper letters, 58 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-11-06 22:57:44,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 65 transitions, 257 flow [2023-11-06 22:57:44,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:57:44,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:57:44,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 472 transitions. [2023-11-06 22:57:44,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5539906103286385 [2023-11-06 22:57:44,287 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 472 transitions. [2023-11-06 22:57:44,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 472 transitions. [2023-11-06 22:57:44,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:57:44,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 472 transitions. [2023-11-06 22:57:44,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 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) [2023-11-06 22:57:44,305 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 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) [2023-11-06 22:57:44,307 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 284.0) internal successors, (1136), 4 states have internal predecessors, (1136), 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) [2023-11-06 22:57:44,309 INFO L175 Difference]: Start difference. First operand has 53 places, 66 transitions, 139 flow. Second operand 3 states and 472 transitions. [2023-11-06 22:57:44,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 65 transitions, 257 flow [2023-11-06 22:57:44,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 65 transitions, 257 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:57:44,316 INFO L231 Difference]: Finished difference. Result has 52 places, 47 transitions, 109 flow [2023-11-06 22:57:44,318 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=284, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=52, PETRI_TRANSITIONS=47} [2023-11-06 22:57:44,322 INFO L281 CegarLoopForPetriNet]: 53 programPoint places, -1 predicate places. [2023-11-06 22:57:44,323 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 47 transitions, 109 flow [2023-11-06 22:57:44,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 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) [2023-11-06 22:57:44,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:44,324 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-06 22:57:44,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-06 22:57:44,324 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 14 more)] === [2023-11-06 22:57:44,325 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:44,325 INFO L85 PathProgramCache]: Analyzing trace with hash 248381622, now seen corresponding path program 1 times [2023-11-06 22:57:44,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:44,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082928781] [2023-11-06 22:57:44,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:44,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:44,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:57:44,354 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:57:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:57:44,394 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:57:44,394 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:57:44,396 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-06 22:57:44,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 17 remaining) [2023-11-06 22:57:44,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 17 remaining) [2023-11-06 22:57:44,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 17 remaining) [2023-11-06 22:57:44,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 17 remaining) [2023-11-06 22:57:44,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 17 remaining) [2023-11-06 22:57:44,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 17 remaining) [2023-11-06 22:57:44,400 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 17 remaining) [2023-11-06 22:57:44,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 17 remaining) [2023-11-06 22:57:44,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 17 remaining) [2023-11-06 22:57:44,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 17 remaining) [2023-11-06 22:57:44,401 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 17 remaining) [2023-11-06 22:57:44,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 17 remaining) [2023-11-06 22:57:44,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 17 remaining) [2023-11-06 22:57:44,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 17 remaining) [2023-11-06 22:57:44,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 17 remaining) [2023-11-06 22:57:44,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 17 remaining) [2023-11-06 22:57:44,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-06 22:57:44,404 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-06 22:57:44,406 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:57:44,407 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-06 22:57:44,433 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-06 22:57:44,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 197 transitions, 410 flow [2023-11-06 22:57:44,493 INFO L124 PetriNetUnfolderBase]: 54/379 cut-off events. [2023-11-06 22:57:44,494 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 22:57:44,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 379 events. 54/379 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1420 event pairs, 0 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 230. Up to 9 conditions per place. [2023-11-06 22:57:44,498 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 197 transitions, 410 flow [2023-11-06 22:57:44,503 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 174 places, 197 transitions, 410 flow [2023-11-06 22:57:44,504 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:57:44,504 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 174 places, 197 transitions, 410 flow [2023-11-06 22:57:44,504 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 174 places, 197 transitions, 410 flow [2023-11-06 22:57:44,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 197 transitions, 410 flow [2023-11-06 22:57:44,556 INFO L124 PetriNetUnfolderBase]: 54/379 cut-off events. [2023-11-06 22:57:44,556 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-06 22:57:44,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 391 conditions, 379 events. 54/379 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1420 event pairs, 0 based on Foata normal form. 0/291 useless extension candidates. Maximal degree in co-relation 230. Up to 9 conditions per place. [2023-11-06 22:57:44,576 INFO L119 LiptonReduction]: Number of co-enabled transitions 17316 [2023-11-06 22:57:47,925 INFO L134 LiptonReduction]: Checked pairs total: 50759 [2023-11-06 22:57:47,926 INFO L136 LiptonReduction]: Total number of compositions: 150 [2023-11-06 22:57:47,929 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:57:47,931 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=LoopsAndPotentialCycles, 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;@119edf78, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:57:47,931 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-11-06 22:57:47,934 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:57:47,934 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2023-11-06 22:57:47,934 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:57:47,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:47,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:57:47,935 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:57:47,936 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:47,936 INFO L85 PathProgramCache]: Analyzing trace with hash 931961012, now seen corresponding path program 1 times [2023-11-06 22:57:47,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:47,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345271684] [2023-11-06 22:57:47,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:47,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:47,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:47,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:47,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:47,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345271684] [2023-11-06 22:57:47,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345271684] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:47,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:47,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:57:47,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277048823] [2023-11-06 22:57:47,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:47,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:57:47,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:47,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:57:47,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:57:48,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 347 [2023-11-06 22:57:48,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 98 transitions, 212 flow. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 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) [2023-11-06 22:57:48,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:57:48,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 347 [2023-11-06 22:57:48,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:57:50,225 INFO L124 PetriNetUnfolderBase]: 11284/17547 cut-off events. [2023-11-06 22:57:50,226 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2023-11-06 22:57:50,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34881 conditions, 17547 events. 11284/17547 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 726. Compared 127380 event pairs, 9578 based on Foata normal form. 2366/14248 useless extension candidates. Maximal degree in co-relation 20368. Up to 17242 conditions per place. [2023-11-06 22:57:50,349 INFO L140 encePairwiseOnDemand]: 320/347 looper letters, 75 selfloop transitions, 2 changer transitions 0/90 dead transitions. [2023-11-06 22:57:50,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 90 transitions, 350 flow [2023-11-06 22:57:50,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:57:50,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:57:50,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 594 transitions. [2023-11-06 22:57:50,353 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5706051873198847 [2023-11-06 22:57:50,353 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 594 transitions. [2023-11-06 22:57:50,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 594 transitions. [2023-11-06 22:57:50,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:57:50,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 594 transitions. [2023-11-06 22:57:50,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 198.0) internal successors, (594), 3 states have internal predecessors, (594), 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) [2023-11-06 22:57:50,361 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 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) [2023-11-06 22:57:50,362 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 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) [2023-11-06 22:57:50,363 INFO L175 Difference]: Start difference. First operand has 77 places, 98 transitions, 212 flow. Second operand 3 states and 594 transitions. [2023-11-06 22:57:50,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 90 transitions, 350 flow [2023-11-06 22:57:50,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 90 transitions, 350 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-06 22:57:50,368 INFO L231 Difference]: Finished difference. Result has 79 places, 76 transitions, 182 flow [2023-11-06 22:57:50,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=79, PETRI_TRANSITIONS=76} [2023-11-06 22:57:50,370 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 2 predicate places. [2023-11-06 22:57:50,370 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 76 transitions, 182 flow [2023-11-06 22:57:50,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 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) [2023-11-06 22:57:50,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:50,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-06 22:57:50,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-06 22:57:50,372 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:57:50,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:50,373 INFO L85 PathProgramCache]: Analyzing trace with hash 916943635, now seen corresponding path program 1 times [2023-11-06 22:57:50,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:50,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95009109] [2023-11-06 22:57:50,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:50,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:50,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:50,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:50,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:50,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95009109] [2023-11-06 22:57:50,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95009109] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:50,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:50,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:57:50,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262870023] [2023-11-06 22:57:50,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:50,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:57:50,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:50,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:57:50,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:57:50,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 347 [2023-11-06 22:57:50,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 76 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 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) [2023-11-06 22:57:50,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:57:50,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 347 [2023-11-06 22:57:50,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:57:52,394 INFO L124 PetriNetUnfolderBase]: 9580/16141 cut-off events. [2023-11-06 22:57:52,394 INFO L125 PetriNetUnfolderBase]: For 149/149 co-relation queries the response was YES. [2023-11-06 22:57:52,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32072 conditions, 16141 events. 9580/16141 cut-off events. For 149/149 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 120685 event pairs, 5191 based on Foata normal form. 0/12289 useless extension candidates. Maximal degree in co-relation 32034. Up to 10896 conditions per place. [2023-11-06 22:57:52,477 INFO L140 encePairwiseOnDemand]: 322/347 looper letters, 91 selfloop transitions, 10 changer transitions 0/112 dead transitions. [2023-11-06 22:57:52,477 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 112 transitions, 462 flow [2023-11-06 22:57:52,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:57:52,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:57:52,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 586 transitions. [2023-11-06 22:57:52,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5629202689721422 [2023-11-06 22:57:52,481 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 586 transitions. [2023-11-06 22:57:52,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 586 transitions. [2023-11-06 22:57:52,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:57:52,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 586 transitions. [2023-11-06 22:57:52,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 195.33333333333334) internal successors, (586), 3 states have internal predecessors, (586), 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) [2023-11-06 22:57:52,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 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) [2023-11-06 22:57:52,488 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 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) [2023-11-06 22:57:52,488 INFO L175 Difference]: Start difference. First operand has 79 places, 76 transitions, 182 flow. Second operand 3 states and 586 transitions. [2023-11-06 22:57:52,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 112 transitions, 462 flow [2023-11-06 22:57:52,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 112 transitions, 460 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-06 22:57:52,497 INFO L231 Difference]: Finished difference. Result has 80 places, 82 transitions, 274 flow [2023-11-06 22:57:52,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=274, PETRI_PLACES=80, PETRI_TRANSITIONS=82} [2023-11-06 22:57:52,500 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 3 predicate places. [2023-11-06 22:57:52,500 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 82 transitions, 274 flow [2023-11-06 22:57:52,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 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) [2023-11-06 22:57:52,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:52,501 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-06 22:57:52,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-06 22:57:52,503 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:57:52,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:52,503 INFO L85 PathProgramCache]: Analyzing trace with hash 1785473076, now seen corresponding path program 1 times [2023-11-06 22:57:52,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:52,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777553536] [2023-11-06 22:57:52,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:52,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:52,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:52,574 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:57:52,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:52,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777553536] [2023-11-06 22:57:52,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777553536] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:52,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:52,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:57:52,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836388323] [2023-11-06 22:57:52,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:52,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:57:52,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:52,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:57:52,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:57:52,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 347 [2023-11-06 22:57:52,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 82 transitions, 274 flow. Second operand has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 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) [2023-11-06 22:57:52,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:57:52,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 347 [2023-11-06 22:57:52,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:57:54,405 INFO L124 PetriNetUnfolderBase]: 9217/15704 cut-off events. [2023-11-06 22:57:54,405 INFO L125 PetriNetUnfolderBase]: For 3447/3517 co-relation queries the response was YES. [2023-11-06 22:57:54,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37510 conditions, 15704 events. 9217/15704 cut-off events. For 3447/3517 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 118229 event pairs, 6544 based on Foata normal form. 0/13590 useless extension candidates. Maximal degree in co-relation 31471. Up to 14861 conditions per place. [2023-11-06 22:57:54,502 INFO L140 encePairwiseOnDemand]: 344/347 looper letters, 70 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2023-11-06 22:57:54,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 86 transitions, 426 flow [2023-11-06 22:57:54,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:57:54,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:57:54,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 551 transitions. [2023-11-06 22:57:54,506 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5292987512007685 [2023-11-06 22:57:54,506 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 551 transitions. [2023-11-06 22:57:54,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 551 transitions. [2023-11-06 22:57:54,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:57:54,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 551 transitions. [2023-11-06 22:57:54,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 183.66666666666666) internal successors, (551), 3 states have internal predecessors, (551), 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) [2023-11-06 22:57:54,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 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) [2023-11-06 22:57:54,514 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 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) [2023-11-06 22:57:54,514 INFO L175 Difference]: Start difference. First operand has 80 places, 82 transitions, 274 flow. Second operand 3 states and 551 transitions. [2023-11-06 22:57:54,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 86 transitions, 426 flow [2023-11-06 22:57:54,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 86 transitions, 406 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:57:54,644 INFO L231 Difference]: Finished difference. Result has 79 places, 81 transitions, 254 flow [2023-11-06 22:57:54,644 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=254, PETRI_PLACES=79, PETRI_TRANSITIONS=81} [2023-11-06 22:57:54,645 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 2 predicate places. [2023-11-06 22:57:54,646 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 81 transitions, 254 flow [2023-11-06 22:57:54,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 164.33333333333334) internal successors, (493), 3 states have internal predecessors, (493), 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) [2023-11-06 22:57:54,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:54,647 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-11-06 22:57:54,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-06 22:57:54,647 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:57:54,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:54,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1785473075, now seen corresponding path program 1 times [2023-11-06 22:57:54,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:54,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763835361] [2023-11-06 22:57:54,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:54,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:54,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:57:54,691 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-06 22:57:54,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:57:54,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763835361] [2023-11-06 22:57:54,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763835361] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:57:54,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:57:54,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:57:54,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774458704] [2023-11-06 22:57:54,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:57:54,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:57:54,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:57:54,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:57:54,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:57:54,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 347 [2023-11-06 22:57:54,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 81 transitions, 254 flow. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 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) [2023-11-06 22:57:54,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:57:54,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 347 [2023-11-06 22:57:54,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-06 22:57:56,417 INFO L124 PetriNetUnfolderBase]: 9204/15680 cut-off events. [2023-11-06 22:57:56,417 INFO L125 PetriNetUnfolderBase]: For 1743/1813 co-relation queries the response was YES. [2023-11-06 22:57:56,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36356 conditions, 15680 events. 9204/15680 cut-off events. For 1743/1813 co-relation queries the response was YES. Maximal size of possible extension queue 560. Compared 118038 event pairs, 6508 based on Foata normal form. 0/13003 useless extension candidates. Maximal degree in co-relation 30493. Up to 14901 conditions per place. [2023-11-06 22:57:56,505 INFO L140 encePairwiseOnDemand]: 343/347 looper letters, 68 selfloop transitions, 4 changer transitions 0/86 dead transitions. [2023-11-06 22:57:56,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 86 transitions, 408 flow [2023-11-06 22:57:56,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-06 22:57:56,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-06 22:57:56,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 548 transitions. [2023-11-06 22:57:56,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.526416906820365 [2023-11-06 22:57:56,508 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 548 transitions. [2023-11-06 22:57:56,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 548 transitions. [2023-11-06 22:57:56,509 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-06 22:57:56,509 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 548 transitions. [2023-11-06 22:57:56,511 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 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) [2023-11-06 22:57:56,514 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 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) [2023-11-06 22:57:56,515 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 347.0) internal successors, (1388), 4 states have internal predecessors, (1388), 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) [2023-11-06 22:57:56,515 INFO L175 Difference]: Start difference. First operand has 79 places, 81 transitions, 254 flow. Second operand 3 states and 548 transitions. [2023-11-06 22:57:56,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 86 transitions, 408 flow [2023-11-06 22:57:56,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 86 transitions, 404 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-06 22:57:56,524 INFO L231 Difference]: Finished difference. Result has 79 places, 81 transitions, 262 flow [2023-11-06 22:57:56,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=347, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=79, PETRI_TRANSITIONS=81} [2023-11-06 22:57:56,528 INFO L281 CegarLoopForPetriNet]: 77 programPoint places, 2 predicate places. [2023-11-06 22:57:56,528 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 81 transitions, 262 flow [2023-11-06 22:57:56,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 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) [2023-11-06 22:57:56,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:57:56,529 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-06 22:57:56,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-06 22:57:56,530 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-11-06 22:57:56,530 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:57:56,530 INFO L85 PathProgramCache]: Analyzing trace with hash -2147248882, now seen corresponding path program 1 times [2023-11-06 22:57:56,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:57:56,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708966957] [2023-11-06 22:57:56,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:57:56,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:57:56,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:57:56,560 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-06 22:57:56,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-06 22:57:56,592 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-06 22:57:56,593 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-06 22:57:56,593 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 21 remaining) [2023-11-06 22:57:56,594 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-11-06 22:57:56,594 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-11-06 22:57:56,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-11-06 22:57:56,596 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-11-06 22:57:56,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-11-06 22:57:56,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-11-06 22:57:56,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 21 remaining) [2023-11-06 22:57:56,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 21 remaining) [2023-11-06 22:57:56,597 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 21 remaining) [2023-11-06 22:57:56,598 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 21 remaining) [2023-11-06 22:57:56,598 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2023-11-06 22:57:56,598 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2023-11-06 22:57:56,598 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-11-06 22:57:56,598 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-11-06 22:57:56,599 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-11-06 22:57:56,599 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-11-06 22:57:56,599 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-11-06 22:57:56,599 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-11-06 22:57:56,600 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-11-06 22:57:56,600 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-11-06 22:57:56,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-06 22:57:56,602 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-06 22:57:56,603 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-06 22:57:56,603 INFO L519 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-06 22:57:56,646 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-06 22:57:56,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 238 transitions, 503 flow [2023-11-06 22:57:56,740 INFO L124 PetriNetUnfolderBase]: 81/573 cut-off events. [2023-11-06 22:57:56,741 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-06 22:57:56,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 598 conditions, 573 events. 81/573 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2370 event pairs, 1 based on Foata normal form. 0/440 useless extension candidates. Maximal degree in co-relation 387. Up to 16 conditions per place. [2023-11-06 22:57:56,747 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 238 transitions, 503 flow [2023-11-06 22:57:56,759 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 238 transitions, 503 flow [2023-11-06 22:57:56,759 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-06 22:57:56,760 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 209 places, 238 transitions, 503 flow [2023-11-06 22:57:56,760 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 209 places, 238 transitions, 503 flow [2023-11-06 22:57:56,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 238 transitions, 503 flow [2023-11-06 22:57:56,828 INFO L124 PetriNetUnfolderBase]: 81/573 cut-off events. [2023-11-06 22:57:56,829 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-11-06 22:57:56,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 598 conditions, 573 events. 81/573 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2370 event pairs, 1 based on Foata normal form. 0/440 useless extension candidates. Maximal degree in co-relation 387. Up to 16 conditions per place. [2023-11-06 22:57:56,863 INFO L119 LiptonReduction]: Number of co-enabled transitions 30888 [2023-11-06 22:58:00,578 INFO L134 LiptonReduction]: Checked pairs total: 97996 [2023-11-06 22:58:00,582 INFO L136 LiptonReduction]: Total number of compositions: 181 [2023-11-06 22:58:00,584 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-06 22:58:00,592 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=LoopsAndPotentialCycles, 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;@119edf78, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-06 22:58:00,593 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-11-06 22:58:00,595 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-06 22:58:00,595 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2023-11-06 22:58:00,595 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-06 22:58:00,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-06 22:58:00,596 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-06 22:58:00,596 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-11-06 22:58:00,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-11-06 22:58:00,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1370453415, now seen corresponding path program 1 times [2023-11-06 22:58:00,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-06 22:58:00,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222528711] [2023-11-06 22:58:00,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-06 22:58:00,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-06 22:58:00,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-06 22:58:00,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-06 22:58:00,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-06 22:58:00,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222528711] [2023-11-06 22:58:00,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222528711] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-06 22:58:00,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-06 22:58:00,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-06 22:58:00,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609094185] [2023-11-06 22:58:00,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-06 22:58:00,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-06 22:58:00,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-06 22:58:00,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-06 22:58:00,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-06 22:58:00,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 195 out of 419 [2023-11-06 22:58:00,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 123 transitions, 273 flow. Second operand has 3 states, 3 states have (on average 196.33333333333334) internal successors, (589), 3 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) [2023-11-06 22:58:00,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-06 22:58:00,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 195 of 419 [2023-11-06 22:58:00,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand