./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.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_a67b9e97-e853-4aa3-9520-8ee7a4114ff1/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67b9e97-e853-4aa3-9520-8ee7a4114ff1/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_a67b9e97-e853-4aa3-9520-8ee7a4114ff1/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67b9e97-e853-4aa3-9520-8ee7a4114ff1/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67b9e97-e853-4aa3-9520-8ee7a4114ff1/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_a67b9e97-e853-4aa3-9520-8ee7a4114ff1/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 ebedbc62bd44b0c214a81c07c6f99e850a5d96675b77716f8547d1b39e8b2cf8 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:16:51,149 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:16:51,237 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67b9e97-e853-4aa3-9520-8ee7a4114ff1/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-12 02:16:51,242 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:16:51,243 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:16:51,267 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:16:51,268 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:16:51,268 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:16:51,269 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:16:51,270 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:16:51,270 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:16:51,271 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:16:51,272 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:16:51,272 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:16:51,273 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:16:51,273 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:16:51,274 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:16:51,275 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:16:51,275 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:16:51,276 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:16:51,276 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:16:51,277 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:16:51,278 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 02:16:51,278 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:16:51,279 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:16:51,280 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:16:51,280 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:16:51,281 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:16:51,282 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:16:51,282 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:16:51,283 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:16:51,283 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:16:51,284 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:16:51,284 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:16:51,285 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:16:51,285 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:16:51,286 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:16:51,286 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:16:51,287 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:16:51,287 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:16:51,288 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:16:51,289 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_a67b9e97-e853-4aa3-9520-8ee7a4114ff1/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67b9e97-e853-4aa3-9520-8ee7a4114ff1/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ebedbc62bd44b0c214a81c07c6f99e850a5d96675b77716f8547d1b39e8b2cf8 [2023-11-12 02:16:51,636 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:16:51,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:16:51,674 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:16:51,675 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:16:51,676 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:16:51,677 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67b9e97-e853-4aa3-9520-8ee7a4114ff1/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i [2023-11-12 02:16:55,068 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:16:55,354 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:16:55,355 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67b9e97-e853-4aa3-9520-8ee7a4114ff1/sv-benchmarks/c/goblint-regression/06-symbeq_02-funloop_norace.i [2023-11-12 02:16:55,377 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67b9e97-e853-4aa3-9520-8ee7a4114ff1/bin/uautomizer-verify-uTZkv6EMXl/data/c768a4965/ccd26efa5cf54ef1ade0f5412aa24f55/FLAGe34cb6b34 [2023-11-12 02:16:55,393 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67b9e97-e853-4aa3-9520-8ee7a4114ff1/bin/uautomizer-verify-uTZkv6EMXl/data/c768a4965/ccd26efa5cf54ef1ade0f5412aa24f55 [2023-11-12 02:16:55,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:16:55,397 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:16:55,399 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:16:55,399 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:16:55,405 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:16:55,406 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:16:55" (1/1) ... [2023-11-12 02:16:55,408 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49d392c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:55, skipping insertion in model container [2023-11-12 02:16:55,408 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:16:55" (1/1) ... [2023-11-12 02:16:55,486 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:16:56,024 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:16:56,062 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:16:56,131 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:16:56,216 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:16:56,216 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:56 WrapperNode [2023-11-12 02:16:56,216 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:16:56,218 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:16:56,218 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:16:56,218 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:16:56,227 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:56" (1/1) ... [2023-11-12 02:16:56,259 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:56" (1/1) ... [2023-11-12 02:16:56,298 INFO L138 Inliner]: procedures = 262, calls = 13, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 81 [2023-11-12 02:16:56,299 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:16:56,299 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:16:56,301 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:16:56,301 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:16:56,311 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:56" (1/1) ... [2023-11-12 02:16:56,313 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:56" (1/1) ... [2023-11-12 02:16:56,326 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:56" (1/1) ... [2023-11-12 02:16:56,336 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:56" (1/1) ... [2023-11-12 02:16:56,343 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:56" (1/1) ... [2023-11-12 02:16:56,359 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:56" (1/1) ... [2023-11-12 02:16:56,361 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:56" (1/1) ... [2023-11-12 02:16:56,363 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:56" (1/1) ... [2023-11-12 02:16:56,366 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:16:56,374 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:16:56,374 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:16:56,374 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:16:56,375 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:56" (1/1) ... [2023-11-12 02:16:56,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:16:56,396 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67b9e97-e853-4aa3-9520-8ee7a4114ff1/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:16:56,427 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67b9e97-e853-4aa3-9520-8ee7a4114ff1/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:16:56,468 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67b9e97-e853-4aa3-9520-8ee7a4114ff1/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:16:56,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:16:56,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:16:56,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:16:56,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:16:56,478 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-12 02:16:56,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:16:56,478 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-12 02:16:56,478 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-12 02:16:56,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:16:56,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:16:56,480 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 02:16:56,653 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:16:56,655 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:16:56,894 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:16:56,902 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:16:56,902 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-12 02:16:56,905 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:16:56 BoogieIcfgContainer [2023-11-12 02:16:56,905 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:16:56,908 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:16:56,908 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:16:56,921 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:16:56,922 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:16:55" (1/3) ... [2023-11-12 02:16:56,922 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21a1c8e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:16:56, skipping insertion in model container [2023-11-12 02:16:56,923 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:16:56" (2/3) ... [2023-11-12 02:16:56,923 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21a1c8e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:16:56, skipping insertion in model container [2023-11-12 02:16:56,924 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:16:56" (3/3) ... [2023-11-12 02:16:56,925 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_02-funloop_norace.i [2023-11-12 02:16:56,935 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:16:56,944 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:16:56,945 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-11-12 02:16:56,945 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:16:57,009 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:16:57,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 95 transitions, 194 flow [2023-11-12 02:16:57,099 INFO L124 PetriNetUnfolderBase]: 6/94 cut-off events. [2023-11-12 02:16:57,099 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:16:57,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 94 events. 6/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 144 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2023-11-12 02:16:57,106 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 95 transitions, 194 flow [2023-11-12 02:16:57,112 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 94 transitions, 191 flow [2023-11-12 02:16:57,116 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:16:57,127 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 94 transitions, 191 flow [2023-11-12 02:16:57,130 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 94 transitions, 191 flow [2023-11-12 02:16:57,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 94 transitions, 191 flow [2023-11-12 02:16:57,161 INFO L124 PetriNetUnfolderBase]: 6/94 cut-off events. [2023-11-12 02:16:57,161 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:16:57,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98 conditions, 94 events. 6/94 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 144 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2023-11-12 02:16:57,166 INFO L119 LiptonReduction]: Number of co-enabled transitions 2304 [2023-11-12 02:16:59,800 INFO L134 LiptonReduction]: Checked pairs total: 3124 [2023-11-12 02:16:59,801 INFO L136 LiptonReduction]: Total number of compositions: 92 [2023-11-12 02:16:59,820 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:16:59,827 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;@664b236c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:16:59,828 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-11-12 02:16:59,830 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:16:59,830 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-12 02:16:59,830 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:16:59,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:16:59,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-12 02:16:59,832 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-12 02:16:59,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:16:59,838 INFO L85 PathProgramCache]: Analyzing trace with hash 11877, now seen corresponding path program 1 times [2023-11-12 02:16:59,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:16:59,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926483240] [2023-11-12 02:16:59,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:16:59,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:16:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:00,078 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 02:17:00,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:00,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926483240] [2023-11-12 02:17:00,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926483240] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:00,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:00,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:17:00,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707442211] [2023-11-12 02:17:00,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:00,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:17:00,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:00,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:17:00,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:17:00,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 187 [2023-11-12 02:17:00,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 26 transitions, 55 flow. Second operand has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 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 02:17:00,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:00,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 187 [2023-11-12 02:17:00,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:00,241 INFO L124 PetriNetUnfolderBase]: 102/206 cut-off events. [2023-11-12 02:17:00,241 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:17:00,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 417 conditions, 206 events. 102/206 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 728 event pairs, 81 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 400. Up to 206 conditions per place. [2023-11-12 02:17:00,249 INFO L140 encePairwiseOnDemand]: 182/187 looper letters, 24 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2023-11-12 02:17:00,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 26 transitions, 107 flow [2023-11-12 02:17:00,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:17:00,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:17:00,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 285 transitions. [2023-11-12 02:17:00,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5080213903743316 [2023-11-12 02:17:00,274 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 285 transitions. [2023-11-12 02:17:00,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 285 transitions. [2023-11-12 02:17:00,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:00,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 285 transitions. [2023-11-12 02:17:00,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 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 02:17:00,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 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 02:17:00,294 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 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 02:17:00,296 INFO L175 Difference]: Start difference. First operand has 27 places, 26 transitions, 55 flow. Second operand 3 states and 285 transitions. [2023-11-12 02:17:00,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 26 transitions, 107 flow [2023-11-12 02:17:00,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 26 transitions, 106 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:17:00,302 INFO L231 Difference]: Finished difference. Result has 28 places, 26 transitions, 66 flow [2023-11-12 02:17:00,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=28, PETRI_TRANSITIONS=26} [2023-11-12 02:17:00,311 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-11-12 02:17:00,311 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 26 transitions, 66 flow [2023-11-12 02:17:00,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.66666666666667) internal successors, (257), 3 states have internal predecessors, (257), 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 02:17:00,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:00,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:17:00,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:17:00,313 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-12 02:17:00,315 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:00,315 INFO L85 PathProgramCache]: Analyzing trace with hash 369183, now seen corresponding path program 1 times [2023-11-12 02:17:00,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:00,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693297576] [2023-11-12 02:17:00,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:00,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:00,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:00,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:00,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693297576] [2023-11-12 02:17:00,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693297576] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:00,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:00,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:17:00,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089551690] [2023-11-12 02:17:00,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:00,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:17:00,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:00,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:17:00,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:17:00,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 187 [2023-11-12 02:17:00,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 26 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 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 02:17:00,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:00,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 187 [2023-11-12 02:17:00,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:00,526 INFO L124 PetriNetUnfolderBase]: 102/205 cut-off events. [2023-11-12 02:17:00,526 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:17:00,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 205 events. 102/205 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 725 event pairs, 81 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 410. Up to 203 conditions per place. [2023-11-12 02:17:00,530 INFO L140 encePairwiseOnDemand]: 184/187 looper letters, 23 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-11-12 02:17:00,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 25 transitions, 112 flow [2023-11-12 02:17:00,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:17:00,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:17:00,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 280 transitions. [2023-11-12 02:17:00,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49910873440285203 [2023-11-12 02:17:00,533 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 280 transitions. [2023-11-12 02:17:00,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 280 transitions. [2023-11-12 02:17:00,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:00,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 280 transitions. [2023-11-12 02:17:00,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 93.33333333333333) internal successors, (280), 3 states have internal predecessors, (280), 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 02:17:00,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 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 02:17:00,538 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 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 02:17:00,538 INFO L175 Difference]: Start difference. First operand has 28 places, 26 transitions, 66 flow. Second operand 3 states and 280 transitions. [2023-11-12 02:17:00,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 25 transitions, 112 flow [2023-11-12 02:17:00,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 25 transitions, 108 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-12 02:17:00,540 INFO L231 Difference]: Finished difference. Result has 28 places, 25 transitions, 62 flow [2023-11-12 02:17:00,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=62, PETRI_PLACES=28, PETRI_TRANSITIONS=25} [2023-11-12 02:17:00,541 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-11-12 02:17:00,542 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 25 transitions, 62 flow [2023-11-12 02:17:00,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 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 02:17:00,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:00,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:00,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:17:00,543 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-12 02:17:00,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:00,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1678589801, now seen corresponding path program 1 times [2023-11-12 02:17:00,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:00,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111638491] [2023-11-12 02:17:00,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:00,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:00,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:00,632 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:00,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:00,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111638491] [2023-11-12 02:17:00,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111638491] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:17:00,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315818120] [2023-11-12 02:17:00,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:00,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:17:00,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67b9e97-e853-4aa3-9520-8ee7a4114ff1/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:00,638 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67b9e97-e853-4aa3-9520-8ee7a4114ff1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:17:00,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67b9e97-e853-4aa3-9520-8ee7a4114ff1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:17:00,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:00,744 INFO L262 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:17:00,749 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:17:00,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:00,799 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:17:00,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:00,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315818120] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:17:00,818 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:17:00,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-12 02:17:00,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087837309] [2023-11-12 02:17:00,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:17:00,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:17:00,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:00,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:17:00,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:17:00,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 187 [2023-11-12 02:17:00,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 25 transitions, 62 flow. Second operand has 7 states, 7 states have (on average 85.71428571428571) internal successors, (600), 7 states have internal predecessors, (600), 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 02:17:00,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:00,858 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 187 [2023-11-12 02:17:00,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:00,987 INFO L124 PetriNetUnfolderBase]: 102/208 cut-off events. [2023-11-12 02:17:00,988 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-12 02:17:00,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 430 conditions, 208 events. 102/208 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 726 event pairs, 81 based on Foata normal form. 3/111 useless extension candidates. Maximal degree in co-relation 404. Up to 205 conditions per place. [2023-11-12 02:17:00,991 INFO L140 encePairwiseOnDemand]: 184/187 looper letters, 23 selfloop transitions, 5 changer transitions 0/28 dead transitions. [2023-11-12 02:17:00,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 28 transitions, 130 flow [2023-11-12 02:17:00,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:17:00,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:17:00,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 535 transitions. [2023-11-12 02:17:00,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4768270944741533 [2023-11-12 02:17:00,994 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 535 transitions. [2023-11-12 02:17:00,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 535 transitions. [2023-11-12 02:17:00,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:00,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 535 transitions. [2023-11-12 02:17:00,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 89.16666666666667) internal successors, (535), 6 states have internal predecessors, (535), 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 02:17:01,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 187.0) internal successors, (1309), 7 states have internal predecessors, (1309), 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 02:17:01,002 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 187.0) internal successors, (1309), 7 states have internal predecessors, (1309), 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 02:17:01,002 INFO L175 Difference]: Start difference. First operand has 28 places, 25 transitions, 62 flow. Second operand 6 states and 535 transitions. [2023-11-12 02:17:01,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 28 transitions, 130 flow [2023-11-12 02:17:01,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 28 transitions, 126 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:17:01,004 INFO L231 Difference]: Finished difference. Result has 34 places, 28 transitions, 94 flow [2023-11-12 02:17:01,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=94, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2023-11-12 02:17:01,005 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 7 predicate places. [2023-11-12 02:17:01,006 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 94 flow [2023-11-12 02:17:01,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 85.71428571428571) internal successors, (600), 7 states have internal predecessors, (600), 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 02:17:01,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:01,007 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:01,020 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67b9e97-e853-4aa3-9520-8ee7a4114ff1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:17:01,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67b9e97-e853-4aa3-9520-8ee7a4114ff1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:17:01,217 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-12 02:17:01,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:01,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1624959185, now seen corresponding path program 2 times [2023-11-12 02:17:01,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:01,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168442971] [2023-11-12 02:17:01,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:01,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:01,365 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:01,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:01,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168442971] [2023-11-12 02:17:01,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168442971] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:17:01,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897997041] [2023-11-12 02:17:01,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:17:01,367 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:17:01,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67b9e97-e853-4aa3-9520-8ee7a4114ff1/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:01,368 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67b9e97-e853-4aa3-9520-8ee7a4114ff1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:17:01,396 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67b9e97-e853-4aa3-9520-8ee7a4114ff1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:17:01,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-12 02:17:01,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:17:01,484 INFO L262 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-12 02:17:01,487 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:17:01,541 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-11-12 02:17:01,626 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:17:01,628 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 10 [2023-11-12 02:17:01,671 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-12 02:17:01,671 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:17:01,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897997041] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:01,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:17:01,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2023-11-12 02:17:01,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346745806] [2023-11-12 02:17:01,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:01,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:17:01,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:01,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:17:01,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:17:01,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 187 [2023-11-12 02:17:01,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 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 02:17:01,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:01,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 187 [2023-11-12 02:17:01,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:01,927 INFO L124 PetriNetUnfolderBase]: 136/276 cut-off events. [2023-11-12 02:17:01,927 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:17:01,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 579 conditions, 276 events. 136/276 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1073 event pairs, 24 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 546. Up to 211 conditions per place. [2023-11-12 02:17:01,930 INFO L140 encePairwiseOnDemand]: 181/187 looper letters, 42 selfloop transitions, 5 changer transitions 0/47 dead transitions. [2023-11-12 02:17:01,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 47 transitions, 226 flow [2023-11-12 02:17:01,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:17:01,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:17:01,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 377 transitions. [2023-11-12 02:17:01,933 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5040106951871658 [2023-11-12 02:17:01,933 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 377 transitions. [2023-11-12 02:17:01,933 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 377 transitions. [2023-11-12 02:17:01,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:01,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 377 transitions. [2023-11-12 02:17:01,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 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 02:17:01,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 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 02:17:01,938 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 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 02:17:01,939 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 94 flow. Second operand 4 states and 377 transitions. [2023-11-12 02:17:01,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 47 transitions, 226 flow [2023-11-12 02:17:01,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 47 transitions, 212 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-12 02:17:01,941 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 114 flow [2023-11-12 02:17:01,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=114, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2023-11-12 02:17:01,943 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2023-11-12 02:17:01,943 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 114 flow [2023-11-12 02:17:01,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 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 02:17:01,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:01,944 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:01,958 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67b9e97-e853-4aa3-9520-8ee7a4114ff1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:17:02,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67b9e97-e853-4aa3-9520-8ee7a4114ff1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:17:02,150 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-12 02:17:02,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:02,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1624967051, now seen corresponding path program 1 times [2023-11-12 02:17:02,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:02,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007507013] [2023-11-12 02:17:02,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:02,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:02,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:02,346 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:02,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:02,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007507013] [2023-11-12 02:17:02,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007507013] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:17:02,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [594038123] [2023-11-12 02:17:02,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:02,349 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:17:02,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67b9e97-e853-4aa3-9520-8ee7a4114ff1/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:02,351 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67b9e97-e853-4aa3-9520-8ee7a4114ff1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:17:02,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67b9e97-e853-4aa3-9520-8ee7a4114ff1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:17:02,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:02,442 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:17:02,444 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:17:02,478 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:02,478 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:17:02,546 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:17:02,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [594038123] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:17:02,546 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:17:02,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-12 02:17:02,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370689612] [2023-11-12 02:17:02,547 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:17:02,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-12 02:17:02,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:02,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-12 02:17:02,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-12 02:17:02,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 84 out of 187 [2023-11-12 02:17:02,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 114 flow. Second operand has 13 states, 13 states have (on average 85.38461538461539) internal successors, (1110), 13 states have internal predecessors, (1110), 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 02:17:02,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:02,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 84 of 187 [2023-11-12 02:17:02,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:02,716 INFO L124 PetriNetUnfolderBase]: 136/282 cut-off events. [2023-11-12 02:17:02,716 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2023-11-12 02:17:02,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 688 conditions, 282 events. 136/282 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1098 event pairs, 91 based on Foata normal form. 6/193 useless extension candidates. Maximal degree in co-relation 634. Up to 273 conditions per place. [2023-11-12 02:17:02,722 INFO L140 encePairwiseOnDemand]: 184/187 looper letters, 27 selfloop transitions, 11 changer transitions 0/38 dead transitions. [2023-11-12 02:17:02,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 38 transitions, 226 flow [2023-11-12 02:17:02,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-12 02:17:02,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-12 02:17:02,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1048 transitions. [2023-11-12 02:17:02,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46702317290552586 [2023-11-12 02:17:02,727 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1048 transitions. [2023-11-12 02:17:02,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1048 transitions. [2023-11-12 02:17:02,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:02,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1048 transitions. [2023-11-12 02:17:02,733 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 87.33333333333333) internal successors, (1048), 12 states have internal predecessors, (1048), 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 02:17:02,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 187.0) internal successors, (2431), 13 states have internal predecessors, (2431), 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 02:17:02,741 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 187.0) internal successors, (2431), 13 states have internal predecessors, (2431), 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 02:17:02,741 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 114 flow. Second operand 12 states and 1048 transitions. [2023-11-12 02:17:02,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 38 transitions, 226 flow [2023-11-12 02:17:02,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 38 transitions, 226 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-12 02:17:02,747 INFO L231 Difference]: Finished difference. Result has 55 places, 38 transitions, 198 flow [2023-11-12 02:17:02,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=198, PETRI_PLACES=55, PETRI_TRANSITIONS=38} [2023-11-12 02:17:02,750 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 28 predicate places. [2023-11-12 02:17:02,751 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 38 transitions, 198 flow [2023-11-12 02:17:02,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 85.38461538461539) internal successors, (1110), 13 states have internal predecessors, (1110), 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 02:17:02,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:02,752 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:02,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67b9e97-e853-4aa3-9520-8ee7a4114ff1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:17:02,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67b9e97-e853-4aa3-9520-8ee7a4114ff1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:17:02,958 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-12 02:17:02,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:02,959 INFO L85 PathProgramCache]: Analyzing trace with hash -294638027, now seen corresponding path program 2 times [2023-11-12 02:17:02,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:02,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023738929] [2023-11-12 02:17:02,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:02,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:03,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:03,278 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-12 02:17:03,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:03,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023738929] [2023-11-12 02:17:03,279 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023738929] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:03,279 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:03,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:17:03,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708126254] [2023-11-12 02:17:03,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:03,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:17:03,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:03,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:17:03,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:17:03,334 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 187 [2023-11-12 02:17:03,335 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 38 transitions, 198 flow. Second operand has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 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 02:17:03,335 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:03,335 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 187 [2023-11-12 02:17:03,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:03,460 INFO L124 PetriNetUnfolderBase]: 126/262 cut-off events. [2023-11-12 02:17:03,461 INFO L125 PetriNetUnfolderBase]: For 68/68 co-relation queries the response was YES. [2023-11-12 02:17:03,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 671 conditions, 262 events. 126/262 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 968 event pairs, 32 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 592. Up to 209 conditions per place. [2023-11-12 02:17:03,464 INFO L140 encePairwiseOnDemand]: 181/187 looper letters, 44 selfloop transitions, 6 changer transitions 0/50 dead transitions. [2023-11-12 02:17:03,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 50 transitions, 329 flow [2023-11-12 02:17:03,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:17:03,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:17:03,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 373 transitions. [2023-11-12 02:17:03,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49866310160427807 [2023-11-12 02:17:03,467 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 373 transitions. [2023-11-12 02:17:03,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 373 transitions. [2023-11-12 02:17:03,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:03,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 373 transitions. [2023-11-12 02:17:03,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 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 02:17:03,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 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 02:17:03,471 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 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 02:17:03,471 INFO L175 Difference]: Start difference. First operand has 55 places, 38 transitions, 198 flow. Second operand 4 states and 373 transitions. [2023-11-12 02:17:03,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 50 transitions, 329 flow [2023-11-12 02:17:03,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 50 transitions, 281 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-11-12 02:17:03,481 INFO L231 Difference]: Finished difference. Result has 55 places, 40 transitions, 182 flow [2023-11-12 02:17:03,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=182, PETRI_PLACES=55, PETRI_TRANSITIONS=40} [2023-11-12 02:17:03,483 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 28 predicate places. [2023-11-12 02:17:03,484 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 40 transitions, 182 flow [2023-11-12 02:17:03,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 84.4) internal successors, (422), 5 states have internal predecessors, (422), 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 02:17:03,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:03,485 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:03,485 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-12 02:17:03,485 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-12 02:17:03,485 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:03,486 INFO L85 PathProgramCache]: Analyzing trace with hash 328207332, now seen corresponding path program 1 times [2023-11-12 02:17:03,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:03,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333818283] [2023-11-12 02:17:03,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:03,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:03,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:03,555 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-12 02:17:03,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:03,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333818283] [2023-11-12 02:17:03,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333818283] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:03,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:03,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:17:03,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234113539] [2023-11-12 02:17:03,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:03,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:17:03,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:03,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:17:03,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:17:03,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 187 [2023-11-12 02:17:03,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 40 transitions, 182 flow. Second operand has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 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 02:17:03,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:03,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 187 [2023-11-12 02:17:03,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:03,708 INFO L124 PetriNetUnfolderBase]: 176/362 cut-off events. [2023-11-12 02:17:03,709 INFO L125 PetriNetUnfolderBase]: For 131/131 co-relation queries the response was YES. [2023-11-12 02:17:03,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 964 conditions, 362 events. 176/362 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1484 event pairs, 68 based on Foata normal form. 14/289 useless extension candidates. Maximal degree in co-relation 906. Up to 219 conditions per place. [2023-11-12 02:17:03,713 INFO L140 encePairwiseOnDemand]: 182/187 looper letters, 56 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2023-11-12 02:17:03,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 58 transitions, 360 flow [2023-11-12 02:17:03,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:17:03,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:17:03,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2023-11-12 02:17:03,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5418894830659536 [2023-11-12 02:17:03,716 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 304 transitions. [2023-11-12 02:17:03,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 304 transitions. [2023-11-12 02:17:03,716 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:03,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 304 transitions. [2023-11-12 02:17:03,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 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 02:17:03,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 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 02:17:03,720 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 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 02:17:03,720 INFO L175 Difference]: Start difference. First operand has 55 places, 40 transitions, 182 flow. Second operand 3 states and 304 transitions. [2023-11-12 02:17:03,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 58 transitions, 360 flow [2023-11-12 02:17:03,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 58 transitions, 354 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:17:03,724 INFO L231 Difference]: Finished difference. Result has 57 places, 41 transitions, 193 flow [2023-11-12 02:17:03,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=193, PETRI_PLACES=57, PETRI_TRANSITIONS=41} [2023-11-12 02:17:03,725 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 30 predicate places. [2023-11-12 02:17:03,726 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 41 transitions, 193 flow [2023-11-12 02:17:03,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 90.0) internal successors, (270), 3 states have internal predecessors, (270), 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 02:17:03,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:03,726 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:03,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:17:03,727 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-12 02:17:03,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:03,727 INFO L85 PathProgramCache]: Analyzing trace with hash 320646427, now seen corresponding path program 1 times [2023-11-12 02:17:03,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:03,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539116528] [2023-11-12 02:17:03,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:03,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:03,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:03,826 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-12 02:17:03,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:03,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539116528] [2023-11-12 02:17:03,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539116528] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:03,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:03,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:17:03,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691885555] [2023-11-12 02:17:03,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:03,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:17:03,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:03,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:17:03,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:17:03,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 187 [2023-11-12 02:17:03,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 41 transitions, 193 flow. Second operand has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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 02:17:03,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:03,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 187 [2023-11-12 02:17:03,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:04,011 INFO L124 PetriNetUnfolderBase]: 238/486 cut-off events. [2023-11-12 02:17:04,012 INFO L125 PetriNetUnfolderBase]: For 238/238 co-relation queries the response was YES. [2023-11-12 02:17:04,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1377 conditions, 486 events. 238/486 cut-off events. For 238/238 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2031 event pairs, 118 based on Foata normal form. 14/384 useless extension candidates. Maximal degree in co-relation 1318. Up to 333 conditions per place. [2023-11-12 02:17:04,018 INFO L140 encePairwiseOnDemand]: 182/187 looper letters, 58 selfloop transitions, 2 changer transitions 0/60 dead transitions. [2023-11-12 02:17:04,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 60 transitions, 390 flow [2023-11-12 02:17:04,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:17:04,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:17:04,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 298 transitions. [2023-11-12 02:17:04,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5311942959001783 [2023-11-12 02:17:04,021 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 298 transitions. [2023-11-12 02:17:04,021 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 298 transitions. [2023-11-12 02:17:04,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:04,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 298 transitions. [2023-11-12 02:17:04,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 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 02:17:04,024 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 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 02:17:04,024 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 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 02:17:04,025 INFO L175 Difference]: Start difference. First operand has 57 places, 41 transitions, 193 flow. Second operand 3 states and 298 transitions. [2023-11-12 02:17:04,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 60 transitions, 390 flow [2023-11-12 02:17:04,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 60 transitions, 386 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:17:04,030 INFO L231 Difference]: Finished difference. Result has 59 places, 42 transitions, 207 flow [2023-11-12 02:17:04,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=207, PETRI_PLACES=59, PETRI_TRANSITIONS=42} [2023-11-12 02:17:04,033 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 32 predicate places. [2023-11-12 02:17:04,034 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 42 transitions, 207 flow [2023-11-12 02:17:04,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 3 states have internal predecessors, (264), 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 02:17:04,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:04,034 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:04,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:17:04,035 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-12 02:17:04,035 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:04,035 INFO L85 PathProgramCache]: Analyzing trace with hash 1918308732, now seen corresponding path program 1 times [2023-11-12 02:17:04,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:04,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579137957] [2023-11-12 02:17:04,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:04,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:04,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:04,555 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-12 02:17:04,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:04,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579137957] [2023-11-12 02:17:04,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579137957] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:04,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:04,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:17:04,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761801643] [2023-11-12 02:17:04,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:04,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:17:04,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:04,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:17:04,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:17:04,763 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 187 [2023-11-12 02:17:04,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 42 transitions, 207 flow. Second operand has 8 states, 8 states have (on average 79.375) internal successors, (635), 8 states have internal predecessors, (635), 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 02:17:04,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:04,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 187 [2023-11-12 02:17:04,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:05,089 INFO L124 PetriNetUnfolderBase]: 263/548 cut-off events. [2023-11-12 02:17:05,089 INFO L125 PetriNetUnfolderBase]: For 290/290 co-relation queries the response was YES. [2023-11-12 02:17:05,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1654 conditions, 548 events. 263/548 cut-off events. For 290/290 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2441 event pairs, 109 based on Foata normal form. 0/424 useless extension candidates. Maximal degree in co-relation 1594. Up to 430 conditions per place. [2023-11-12 02:17:05,097 INFO L140 encePairwiseOnDemand]: 179/187 looper letters, 55 selfloop transitions, 14 changer transitions 0/69 dead transitions. [2023-11-12 02:17:05,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 69 transitions, 452 flow [2023-11-12 02:17:05,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:17:05,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:17:05,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 602 transitions. [2023-11-12 02:17:05,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45989304812834225 [2023-11-12 02:17:05,102 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 602 transitions. [2023-11-12 02:17:05,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 602 transitions. [2023-11-12 02:17:05,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:05,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 602 transitions. [2023-11-12 02:17:05,105 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 86.0) internal successors, (602), 7 states have internal predecessors, (602), 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 02:17:05,110 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 187.0) internal successors, (1496), 8 states have internal predecessors, (1496), 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 02:17:05,111 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 187.0) internal successors, (1496), 8 states have internal predecessors, (1496), 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 02:17:05,111 INFO L175 Difference]: Start difference. First operand has 59 places, 42 transitions, 207 flow. Second operand 7 states and 602 transitions. [2023-11-12 02:17:05,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 69 transitions, 452 flow [2023-11-12 02:17:05,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 69 transitions, 446 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:17:05,118 INFO L231 Difference]: Finished difference. Result has 68 places, 50 transitions, 308 flow [2023-11-12 02:17:05,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=308, PETRI_PLACES=68, PETRI_TRANSITIONS=50} [2023-11-12 02:17:05,120 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 41 predicate places. [2023-11-12 02:17:05,120 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 50 transitions, 308 flow [2023-11-12 02:17:05,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 79.375) internal successors, (635), 8 states have internal predecessors, (635), 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 02:17:05,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:05,121 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:05,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:17:05,122 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-12 02:17:05,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:05,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1433477851, now seen corresponding path program 1 times [2023-11-12 02:17:05,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:05,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401555115] [2023-11-12 02:17:05,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:05,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:05,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:05,537 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-12 02:17:05,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:05,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401555115] [2023-11-12 02:17:05,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401555115] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:05,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:05,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:17:05,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41352743] [2023-11-12 02:17:05,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:05,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:17:05,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:05,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:17:05,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:17:05,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 187 [2023-11-12 02:17:05,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 50 transitions, 308 flow. Second operand has 7 states, 7 states have (on average 81.57142857142857) internal successors, (571), 7 states have internal predecessors, (571), 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 02:17:05,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:05,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 187 [2023-11-12 02:17:05,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:05,977 INFO L124 PetriNetUnfolderBase]: 286/591 cut-off events. [2023-11-12 02:17:05,978 INFO L125 PetriNetUnfolderBase]: For 755/755 co-relation queries the response was YES. [2023-11-12 02:17:05,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2001 conditions, 591 events. 286/591 cut-off events. For 755/755 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2657 event pairs, 90 based on Foata normal form. 17/504 useless extension candidates. Maximal degree in co-relation 1936. Up to 352 conditions per place. [2023-11-12 02:17:05,985 INFO L140 encePairwiseOnDemand]: 176/187 looper letters, 56 selfloop transitions, 18 changer transitions 0/74 dead transitions. [2023-11-12 02:17:05,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 74 transitions, 556 flow [2023-11-12 02:17:05,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:17:05,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:17:05,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 618 transitions. [2023-11-12 02:17:05,989 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4721161191749427 [2023-11-12 02:17:05,990 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 618 transitions. [2023-11-12 02:17:05,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 618 transitions. [2023-11-12 02:17:05,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:05,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 618 transitions. [2023-11-12 02:17:05,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.28571428571429) internal successors, (618), 7 states have internal predecessors, (618), 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 02:17:05,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 187.0) internal successors, (1496), 8 states have internal predecessors, (1496), 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 02:17:05,997 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 187.0) internal successors, (1496), 8 states have internal predecessors, (1496), 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 02:17:05,997 INFO L175 Difference]: Start difference. First operand has 68 places, 50 transitions, 308 flow. Second operand 7 states and 618 transitions. [2023-11-12 02:17:05,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 74 transitions, 556 flow [2023-11-12 02:17:06,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 74 transitions, 526 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-11-12 02:17:06,003 INFO L231 Difference]: Finished difference. Result has 74 places, 53 transitions, 369 flow [2023-11-12 02:17:06,003 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=369, PETRI_PLACES=74, PETRI_TRANSITIONS=53} [2023-11-12 02:17:06,004 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 47 predicate places. [2023-11-12 02:17:06,004 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 53 transitions, 369 flow [2023-11-12 02:17:06,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.57142857142857) internal successors, (571), 7 states have internal predecessors, (571), 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 02:17:06,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:06,005 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:06,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:17:06,006 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-12 02:17:06,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:06,006 INFO L85 PathProgramCache]: Analyzing trace with hash -1440837872, now seen corresponding path program 2 times [2023-11-12 02:17:06,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:06,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194024873] [2023-11-12 02:17:06,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:06,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:06,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:06,517 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-12 02:17:06,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:06,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194024873] [2023-11-12 02:17:06,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194024873] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:06,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:06,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:17:06,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906720959] [2023-11-12 02:17:06,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:06,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:17:06,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:06,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:17:06,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:17:06,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 78 out of 187 [2023-11-12 02:17:06,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 53 transitions, 369 flow. Second operand has 8 states, 8 states have (on average 79.375) internal successors, (635), 8 states have internal predecessors, (635), 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 02:17:06,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:06,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 78 of 187 [2023-11-12 02:17:06,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:07,170 INFO L124 PetriNetUnfolderBase]: 326/672 cut-off events. [2023-11-12 02:17:07,170 INFO L125 PetriNetUnfolderBase]: For 1429/1429 co-relation queries the response was YES. [2023-11-12 02:17:07,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2563 conditions, 672 events. 326/672 cut-off events. For 1429/1429 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3192 event pairs, 81 based on Foata normal form. 14/575 useless extension candidates. Maximal degree in co-relation 2495. Up to 482 conditions per place. [2023-11-12 02:17:07,181 INFO L140 encePairwiseOnDemand]: 179/187 looper letters, 70 selfloop transitions, 27 changer transitions 0/97 dead transitions. [2023-11-12 02:17:07,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 97 transitions, 775 flow [2023-11-12 02:17:07,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 02:17:07,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-12 02:17:07,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 932 transitions. [2023-11-12 02:17:07,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4530870199319397 [2023-11-12 02:17:07,186 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 932 transitions. [2023-11-12 02:17:07,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 932 transitions. [2023-11-12 02:17:07,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:07,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 932 transitions. [2023-11-12 02:17:07,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 84.72727272727273) internal successors, (932), 11 states have internal predecessors, (932), 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 02:17:07,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 187.0) internal successors, (2244), 12 states have internal predecessors, (2244), 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 02:17:07,197 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 187.0) internal successors, (2244), 12 states have internal predecessors, (2244), 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 02:17:07,197 INFO L175 Difference]: Start difference. First operand has 74 places, 53 transitions, 369 flow. Second operand 11 states and 932 transitions. [2023-11-12 02:17:07,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 97 transitions, 775 flow [2023-11-12 02:17:07,204 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 97 transitions, 743 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-12 02:17:07,206 INFO L231 Difference]: Finished difference. Result has 85 places, 65 transitions, 531 flow [2023-11-12 02:17:07,207 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=531, PETRI_PLACES=85, PETRI_TRANSITIONS=65} [2023-11-12 02:17:07,207 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 58 predicate places. [2023-11-12 02:17:07,208 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 65 transitions, 531 flow [2023-11-12 02:17:07,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 79.375) internal successors, (635), 8 states have internal predecessors, (635), 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 02:17:07,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:07,209 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:07,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-12 02:17:07,210 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-12 02:17:07,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:07,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1440837871, now seen corresponding path program 2 times [2023-11-12 02:17:07,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:07,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788325606] [2023-11-12 02:17:07,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:07,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:07,626 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-12 02:17:07,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:07,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788325606] [2023-11-12 02:17:07,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788325606] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:07,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:07,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:17:07,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933929579] [2023-11-12 02:17:07,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:07,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:17:07,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:07,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:17:07,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:17:07,754 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 187 [2023-11-12 02:17:07,755 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 65 transitions, 531 flow. Second operand has 7 states, 7 states have (on average 81.57142857142857) internal successors, (571), 7 states have internal predecessors, (571), 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 02:17:07,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:07,755 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 187 [2023-11-12 02:17:07,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:08,124 INFO L124 PetriNetUnfolderBase]: 406/813 cut-off events. [2023-11-12 02:17:08,124 INFO L125 PetriNetUnfolderBase]: For 3268/3268 co-relation queries the response was YES. [2023-11-12 02:17:08,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3427 conditions, 813 events. 406/813 cut-off events. For 3268/3268 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3962 event pairs, 57 based on Foata normal form. 32/718 useless extension candidates. Maximal degree in co-relation 3353. Up to 339 conditions per place. [2023-11-12 02:17:08,138 INFO L140 encePairwiseOnDemand]: 177/187 looper letters, 74 selfloop transitions, 33 changer transitions 0/107 dead transitions. [2023-11-12 02:17:08,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 107 transitions, 961 flow [2023-11-12 02:17:08,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:17:08,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-12 02:17:08,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 798 transitions. [2023-11-12 02:17:08,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4741532976827095 [2023-11-12 02:17:08,142 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 798 transitions. [2023-11-12 02:17:08,142 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 798 transitions. [2023-11-12 02:17:08,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:08,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 798 transitions. [2023-11-12 02:17:08,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 88.66666666666667) internal successors, (798), 9 states have internal predecessors, (798), 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 02:17:08,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 187.0) internal successors, (1870), 10 states have internal predecessors, (1870), 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 02:17:08,151 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 187.0) internal successors, (1870), 10 states have internal predecessors, (1870), 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 02:17:08,151 INFO L175 Difference]: Start difference. First operand has 85 places, 65 transitions, 531 flow. Second operand 9 states and 798 transitions. [2023-11-12 02:17:08,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 107 transitions, 961 flow [2023-11-12 02:17:08,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 107 transitions, 874 flow, removed 12 selfloop flow, removed 7 redundant places. [2023-11-12 02:17:08,166 INFO L231 Difference]: Finished difference. Result has 90 places, 71 transitions, 624 flow [2023-11-12 02:17:08,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=624, PETRI_PLACES=90, PETRI_TRANSITIONS=71} [2023-11-12 02:17:08,167 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 63 predicate places. [2023-11-12 02:17:08,167 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 71 transitions, 624 flow [2023-11-12 02:17:08,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.57142857142857) internal successors, (571), 7 states have internal predecessors, (571), 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 02:17:08,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:08,168 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:08,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-12 02:17:08,168 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-12 02:17:08,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:08,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1438846237, now seen corresponding path program 1 times [2023-11-12 02:17:08,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:08,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671377664] [2023-11-12 02:17:08,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:08,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:08,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:08,604 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-12 02:17:08,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:08,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671377664] [2023-11-12 02:17:08,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671377664] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:08,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:08,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:17:08,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924158489] [2023-11-12 02:17:08,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:08,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:17:08,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:08,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:17:08,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:17:08,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 187 [2023-11-12 02:17:08,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 71 transitions, 624 flow. Second operand has 8 states, 8 states have (on average 77.375) internal successors, (619), 8 states have internal predecessors, (619), 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 02:17:08,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:08,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 187 [2023-11-12 02:17:08,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:09,235 INFO L124 PetriNetUnfolderBase]: 424/863 cut-off events. [2023-11-12 02:17:09,235 INFO L125 PetriNetUnfolderBase]: For 4449/4449 co-relation queries the response was YES. [2023-11-12 02:17:09,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4096 conditions, 863 events. 424/863 cut-off events. For 4449/4449 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4389 event pairs, 146 based on Foata normal form. 0/732 useless extension candidates. Maximal degree in co-relation 4022. Up to 712 conditions per place. [2023-11-12 02:17:09,249 INFO L140 encePairwiseOnDemand]: 178/187 looper letters, 82 selfloop transitions, 27 changer transitions 0/109 dead transitions. [2023-11-12 02:17:09,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 109 transitions, 1182 flow [2023-11-12 02:17:09,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:17:09,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-12 02:17:09,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 669 transitions. [2023-11-12 02:17:09,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44719251336898397 [2023-11-12 02:17:09,253 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 669 transitions. [2023-11-12 02:17:09,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 669 transitions. [2023-11-12 02:17:09,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:09,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 669 transitions. [2023-11-12 02:17:09,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 83.625) internal successors, (669), 8 states have internal predecessors, (669), 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 02:17:09,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 187.0) internal successors, (1683), 9 states have internal predecessors, (1683), 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 02:17:09,260 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 187.0) internal successors, (1683), 9 states have internal predecessors, (1683), 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 02:17:09,260 INFO L175 Difference]: Start difference. First operand has 90 places, 71 transitions, 624 flow. Second operand 8 states and 669 transitions. [2023-11-12 02:17:09,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 109 transitions, 1182 flow [2023-11-12 02:17:09,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 109 transitions, 1136 flow, removed 13 selfloop flow, removed 4 redundant places. [2023-11-12 02:17:09,280 INFO L231 Difference]: Finished difference. Result has 97 places, 85 transitions, 860 flow [2023-11-12 02:17:09,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=593, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=860, PETRI_PLACES=97, PETRI_TRANSITIONS=85} [2023-11-12 02:17:09,281 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 70 predicate places. [2023-11-12 02:17:09,281 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 85 transitions, 860 flow [2023-11-12 02:17:09,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 77.375) internal successors, (619), 8 states have internal predecessors, (619), 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 02:17:09,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:09,282 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:09,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 02:17:09,282 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-12 02:17:09,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:09,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1438846248, now seen corresponding path program 1 times [2023-11-12 02:17:09,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:09,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963566185] [2023-11-12 02:17:09,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:09,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:09,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:09,577 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-12 02:17:09,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:09,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963566185] [2023-11-12 02:17:09,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963566185] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:09,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:09,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:17:09,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903690283] [2023-11-12 02:17:09,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:09,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:17:09,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:09,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:17:09,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:17:09,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 187 [2023-11-12 02:17:09,697 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 85 transitions, 860 flow. Second operand has 7 states, 7 states have (on average 81.57142857142857) internal successors, (571), 7 states have internal predecessors, (571), 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 02:17:09,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:09,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 187 [2023-11-12 02:17:09,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:10,045 INFO L124 PetriNetUnfolderBase]: 463/931 cut-off events. [2023-11-12 02:17:10,045 INFO L125 PetriNetUnfolderBase]: For 5717/5717 co-relation queries the response was YES. [2023-11-12 02:17:10,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4749 conditions, 931 events. 463/931 cut-off events. For 5717/5717 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4904 event pairs, 101 based on Foata normal form. 21/864 useless extension candidates. Maximal degree in co-relation 4670. Up to 593 conditions per place. [2023-11-12 02:17:10,062 INFO L140 encePairwiseOnDemand]: 176/187 looper letters, 90 selfloop transitions, 29 changer transitions 0/119 dead transitions. [2023-11-12 02:17:10,062 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 119 transitions, 1437 flow [2023-11-12 02:17:10,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:17:10,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:17:10,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 618 transitions. [2023-11-12 02:17:10,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4721161191749427 [2023-11-12 02:17:10,065 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 618 transitions. [2023-11-12 02:17:10,066 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 618 transitions. [2023-11-12 02:17:10,066 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:10,066 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 618 transitions. [2023-11-12 02:17:10,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 88.28571428571429) internal successors, (618), 7 states have internal predecessors, (618), 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 02:17:10,071 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 187.0) internal successors, (1496), 8 states have internal predecessors, (1496), 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 02:17:10,072 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 187.0) internal successors, (1496), 8 states have internal predecessors, (1496), 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 02:17:10,072 INFO L175 Difference]: Start difference. First operand has 97 places, 85 transitions, 860 flow. Second operand 7 states and 618 transitions. [2023-11-12 02:17:10,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 119 transitions, 1437 flow [2023-11-12 02:17:10,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 119 transitions, 1390 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-11-12 02:17:10,095 INFO L231 Difference]: Finished difference. Result has 101 places, 89 transitions, 960 flow [2023-11-12 02:17:10,096 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=960, PETRI_PLACES=101, PETRI_TRANSITIONS=89} [2023-11-12 02:17:10,096 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 74 predicate places. [2023-11-12 02:17:10,097 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 89 transitions, 960 flow [2023-11-12 02:17:10,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.57142857142857) internal successors, (571), 7 states have internal predecessors, (571), 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 02:17:10,097 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:10,098 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:10,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-12 02:17:10,098 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-12 02:17:10,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:10,098 INFO L85 PathProgramCache]: Analyzing trace with hash -1435483357, now seen corresponding path program 2 times [2023-11-12 02:17:10,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:10,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4944305] [2023-11-12 02:17:10,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:10,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:10,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:10,434 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-12 02:17:10,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:10,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4944305] [2023-11-12 02:17:10,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4944305] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:10,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:10,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:17:10,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481991582] [2023-11-12 02:17:10,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:10,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:17:10,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:10,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:17:10,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:17:10,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 187 [2023-11-12 02:17:10,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 89 transitions, 960 flow. Second operand has 8 states, 8 states have (on average 77.375) internal successors, (619), 8 states have internal predecessors, (619), 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 02:17:10,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:10,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 187 [2023-11-12 02:17:10,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:11,098 INFO L124 PetriNetUnfolderBase]: 451/913 cut-off events. [2023-11-12 02:17:11,099 INFO L125 PetriNetUnfolderBase]: For 6527/6527 co-relation queries the response was YES. [2023-11-12 02:17:11,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5052 conditions, 913 events. 451/913 cut-off events. For 6527/6527 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4703 event pairs, 144 based on Foata normal form. 12/837 useless extension candidates. Maximal degree in co-relation 4971. Up to 711 conditions per place. [2023-11-12 02:17:11,116 INFO L140 encePairwiseOnDemand]: 179/187 looper letters, 88 selfloop transitions, 38 changer transitions 0/126 dead transitions. [2023-11-12 02:17:11,116 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 126 transitions, 1509 flow [2023-11-12 02:17:11,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-12 02:17:11,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-12 02:17:11,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 908 transitions. [2023-11-12 02:17:11,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4414195430238211 [2023-11-12 02:17:11,121 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 908 transitions. [2023-11-12 02:17:11,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 908 transitions. [2023-11-12 02:17:11,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:11,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 908 transitions. [2023-11-12 02:17:11,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 82.54545454545455) internal successors, (908), 11 states have internal predecessors, (908), 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 02:17:11,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 187.0) internal successors, (2244), 12 states have internal predecessors, (2244), 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 02:17:11,132 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 187.0) internal successors, (2244), 12 states have internal predecessors, (2244), 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 02:17:11,132 INFO L175 Difference]: Start difference. First operand has 101 places, 89 transitions, 960 flow. Second operand 11 states and 908 transitions. [2023-11-12 02:17:11,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 126 transitions, 1509 flow [2023-11-12 02:17:11,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 126 transitions, 1462 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-12 02:17:11,159 INFO L231 Difference]: Finished difference. Result has 111 places, 96 transitions, 1118 flow [2023-11-12 02:17:11,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=917, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1118, PETRI_PLACES=111, PETRI_TRANSITIONS=96} [2023-11-12 02:17:11,160 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 84 predicate places. [2023-11-12 02:17:11,160 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 96 transitions, 1118 flow [2023-11-12 02:17:11,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 77.375) internal successors, (619), 8 states have internal predecessors, (619), 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 02:17:11,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:11,161 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:11,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-12 02:17:11,161 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-12 02:17:11,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:11,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1435483368, now seen corresponding path program 2 times [2023-11-12 02:17:11,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:11,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510679118] [2023-11-12 02:17:11,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:11,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:11,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:11,458 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-12 02:17:11,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:11,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1510679118] [2023-11-12 02:17:11,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1510679118] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:17:11,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:17:11,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:17:11,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509535135] [2023-11-12 02:17:11,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:17:11,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:17:11,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:11,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:17:11,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:17:11,566 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 80 out of 187 [2023-11-12 02:17:11,567 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 96 transitions, 1118 flow. Second operand has 7 states, 7 states have (on average 81.57142857142857) internal successors, (571), 7 states have internal predecessors, (571), 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 02:17:11,567 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:11,567 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 80 of 187 [2023-11-12 02:17:11,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:12,048 INFO L124 PetriNetUnfolderBase]: 494/980 cut-off events. [2023-11-12 02:17:12,048 INFO L125 PetriNetUnfolderBase]: For 8865/8865 co-relation queries the response was YES. [2023-11-12 02:17:12,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5802 conditions, 980 events. 494/980 cut-off events. For 8865/8865 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 5060 event pairs, 78 based on Foata normal form. 33/917 useless extension candidates. Maximal degree in co-relation 5715. Up to 465 conditions per place. [2023-11-12 02:17:12,069 INFO L140 encePairwiseOnDemand]: 177/187 looper letters, 87 selfloop transitions, 48 changer transitions 0/135 dead transitions. [2023-11-12 02:17:12,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 135 transitions, 1713 flow [2023-11-12 02:17:12,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-12 02:17:12,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-11-12 02:17:12,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 796 transitions. [2023-11-12 02:17:12,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47296494355317886 [2023-11-12 02:17:12,073 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 796 transitions. [2023-11-12 02:17:12,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 796 transitions. [2023-11-12 02:17:12,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:12,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 796 transitions. [2023-11-12 02:17:12,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 88.44444444444444) internal successors, (796), 9 states have internal predecessors, (796), 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 02:17:12,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 187.0) internal successors, (1870), 10 states have internal predecessors, (1870), 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 02:17:12,082 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 187.0) internal successors, (1870), 10 states have internal predecessors, (1870), 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 02:17:12,082 INFO L175 Difference]: Start difference. First operand has 111 places, 96 transitions, 1118 flow. Second operand 9 states and 796 transitions. [2023-11-12 02:17:12,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 135 transitions, 1713 flow [2023-11-12 02:17:12,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 135 transitions, 1664 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-11-12 02:17:12,118 INFO L231 Difference]: Finished difference. Result has 119 places, 100 transitions, 1279 flow [2023-11-12 02:17:12,119 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=1002, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1279, PETRI_PLACES=119, PETRI_TRANSITIONS=100} [2023-11-12 02:17:12,119 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 92 predicate places. [2023-11-12 02:17:12,119 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 100 transitions, 1279 flow [2023-11-12 02:17:12,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.57142857142857) internal successors, (571), 7 states have internal predecessors, (571), 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 02:17:12,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:12,120 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:12,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-12 02:17:12,121 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-12 02:17:12,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:12,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1096405078, now seen corresponding path program 1 times [2023-11-12 02:17:12,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:12,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810741332] [2023-11-12 02:17:12,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:12,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:12,444 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-12 02:17:12,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:12,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810741332] [2023-11-12 02:17:12,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810741332] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:17:12,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1082002668] [2023-11-12 02:17:12,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:12,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:17:12,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67b9e97-e853-4aa3-9520-8ee7a4114ff1/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:12,449 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67b9e97-e853-4aa3-9520-8ee7a4114ff1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:17:12,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67b9e97-e853-4aa3-9520-8ee7a4114ff1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:17:12,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:12,591 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-12 02:17:12,593 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:17:12,601 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-11-12 02:17:12,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:17:12,678 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 10 [2023-11-12 02:17:12,755 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2023-11-12 02:17:18,705 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-12 02:17:18,705 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:17:23,250 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-12 02:17:23,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1082002668] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:17:23,250 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:17:23,251 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-11-12 02:17:23,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103958059] [2023-11-12 02:17:23,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:17:23,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-12 02:17:23,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:23,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-12 02:17:23,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=246, Unknown=9, NotChecked=0, Total=342 [2023-11-12 02:17:23,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 187 [2023-11-12 02:17:23,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 100 transitions, 1279 flow. Second operand has 19 states, 19 states have (on average 67.63157894736842) internal successors, (1285), 19 states have internal predecessors, (1285), 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 02:17:23,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:17:23,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 187 [2023-11-12 02:17:23,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:17:25,751 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 02:17:27,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 02:17:29,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 02:17:31,869 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 02:17:33,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-11-12 02:17:35,038 INFO L124 PetriNetUnfolderBase]: 474/941 cut-off events. [2023-11-12 02:17:35,039 INFO L125 PetriNetUnfolderBase]: For 10423/10423 co-relation queries the response was YES. [2023-11-12 02:17:35,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6064 conditions, 941 events. 474/941 cut-off events. For 10423/10423 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4764 event pairs, 114 based on Foata normal form. 19/864 useless extension candidates. Maximal degree in co-relation 5973. Up to 661 conditions per place. [2023-11-12 02:17:35,060 INFO L140 encePairwiseOnDemand]: 175/187 looper letters, 126 selfloop transitions, 58 changer transitions 0/184 dead transitions. [2023-11-12 02:17:35,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 184 transitions, 2541 flow [2023-11-12 02:17:35,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-12 02:17:35,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-11-12 02:17:35,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 958 transitions. [2023-11-12 02:17:35,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39407651172357056 [2023-11-12 02:17:35,064 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 958 transitions. [2023-11-12 02:17:35,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 958 transitions. [2023-11-12 02:17:35,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:17:35,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 958 transitions. [2023-11-12 02:17:35,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 73.6923076923077) internal successors, (958), 13 states have internal predecessors, (958), 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 02:17:35,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 187.0) internal successors, (2618), 14 states have internal predecessors, (2618), 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 02:17:35,073 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 187.0) internal successors, (2618), 14 states have internal predecessors, (2618), 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 02:17:35,074 INFO L175 Difference]: Start difference. First operand has 119 places, 100 transitions, 1279 flow. Second operand 13 states and 958 transitions. [2023-11-12 02:17:35,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 184 transitions, 2541 flow [2023-11-12 02:17:35,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 184 transitions, 2459 flow, removed 28 selfloop flow, removed 4 redundant places. [2023-11-12 02:17:35,128 INFO L231 Difference]: Finished difference. Result has 134 places, 130 transitions, 1860 flow [2023-11-12 02:17:35,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=1230, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1860, PETRI_PLACES=134, PETRI_TRANSITIONS=130} [2023-11-12 02:17:35,129 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 107 predicate places. [2023-11-12 02:17:35,130 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 130 transitions, 1860 flow [2023-11-12 02:17:35,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 67.63157894736842) internal successors, (1285), 19 states have internal predecessors, (1285), 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 02:17:35,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:17:35,132 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:17:35,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67b9e97-e853-4aa3-9520-8ee7a4114ff1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:17:35,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67b9e97-e853-4aa3-9520-8ee7a4114ff1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-12 02:17:35,333 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-11-12 02:17:35,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:17:35,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1874653664, now seen corresponding path program 1 times [2023-11-12 02:17:35,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:17:35,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257070860] [2023-11-12 02:17:35,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:35,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:17:35,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:35,697 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-12 02:17:35,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:17:35,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257070860] [2023-11-12 02:17:35,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257070860] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:17:35,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790128192] [2023-11-12 02:17:35,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:17:35,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:17:35,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67b9e97-e853-4aa3-9520-8ee7a4114ff1/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:17:35,701 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67b9e97-e853-4aa3-9520-8ee7a4114ff1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:17:35,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a67b9e97-e853-4aa3-9520-8ee7a4114ff1/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:17:35,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:17:35,834 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 25 conjunts are in the unsatisfiable core [2023-11-12 02:17:35,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:17:35,850 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-11-12 02:17:35,945 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-12 02:17:35,946 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 10 [2023-11-12 02:17:36,023 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 17 [2023-11-12 02:17:42,014 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-12 02:17:42,014 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:17:46,538 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-11-12 02:17:46,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790128192] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:17:46,539 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:17:46,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 17 [2023-11-12 02:17:46,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173726119] [2023-11-12 02:17:46,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:17:46,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-12 02:17:46,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:17:46,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-12 02:17:46,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=246, Unknown=9, NotChecked=0, Total=342 [2023-11-12 02:17:48,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0]