./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.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_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/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_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/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_6732c8d2-b99c-416e-888a-b1241061d96d/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 4a65477eb93c2031bed3e6d454d38e75e9833f23496d456d5084dd6ae5f38687 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:24:05,998 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:24:06,119 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-12 02:24:06,124 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:24:06,129 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:24:06,168 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:24:06,169 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:24:06,170 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:24:06,171 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:24:06,176 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:24:06,177 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:24:06,178 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:24:06,178 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:24:06,180 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:24:06,181 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:24:06,181 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:24:06,182 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:24:06,182 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:24:06,182 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:24:06,183 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:24:06,183 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:24:06,184 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:24:06,184 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 02:24:06,186 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:24:06,186 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:24:06,187 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:24:06,187 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:24:06,188 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:24:06,189 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:24:06,189 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:24:06,190 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:24:06,191 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:24:06,191 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:24:06,191 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:24:06,191 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:24:06,192 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:24:06,192 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:24:06,192 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:24:06,192 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:24:06,193 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:24:06,193 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:24:06,193 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_6732c8d2-b99c-416e-888a-b1241061d96d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4a65477eb93c2031bed3e6d454d38e75e9833f23496d456d5084dd6ae5f38687 [2023-11-12 02:24:06,509 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:24:06,538 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:24:06,545 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:24:06,546 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:24:06,547 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:24:06,548 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2023-11-12 02:24:09,612 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:24:09,962 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:24:09,963 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/sv-benchmarks/c/goblint-regression/13-privatized_69-refine-protected-loop-interval_true.i [2023-11-12 02:24:09,980 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/data/5b4c83605/a9df56eb80a84e74b7485a5ed0e29dec/FLAGfea61cc6b [2023-11-12 02:24:09,998 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/data/5b4c83605/a9df56eb80a84e74b7485a5ed0e29dec [2023-11-12 02:24:10,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:24:10,003 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:24:10,004 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:24:10,005 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:24:10,011 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:24:10,014 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:24:10" (1/1) ... [2023-11-12 02:24:10,016 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76b7a099 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:10, skipping insertion in model container [2023-11-12 02:24:10,016 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:24:10" (1/1) ... [2023-11-12 02:24:10,066 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:24:10,523 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:24:10,538 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:24:10,608 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:24:10,671 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:24:10,672 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:10 WrapperNode [2023-11-12 02:24:10,672 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:24:10,674 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:24:10,674 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:24:10,674 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:24:10,682 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:10" (1/1) ... [2023-11-12 02:24:10,721 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:10" (1/1) ... [2023-11-12 02:24:10,758 INFO L138 Inliner]: procedures = 165, calls = 25, calls flagged for inlining = 8, calls inlined = 9, statements flattened = 109 [2023-11-12 02:24:10,759 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:24:10,759 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:24:10,760 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:24:10,760 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:24:10,770 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:10" (1/1) ... [2023-11-12 02:24:10,771 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:10" (1/1) ... [2023-11-12 02:24:10,779 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:10" (1/1) ... [2023-11-12 02:24:10,780 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:10" (1/1) ... [2023-11-12 02:24:10,795 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:10" (1/1) ... [2023-11-12 02:24:10,805 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:10" (1/1) ... [2023-11-12 02:24:10,808 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:10" (1/1) ... [2023-11-12 02:24:10,815 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:10" (1/1) ... [2023-11-12 02:24:10,818 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:24:10,825 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:24:10,825 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:24:10,825 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:24:10,826 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:10" (1/1) ... [2023-11-12 02:24:10,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:24:10,847 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:24:10,866 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:24:10,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:24:10,923 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2023-11-12 02:24:10,923 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2023-11-12 02:24:10,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:24:10,924 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-12 02:24:10,924 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:24:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:24:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:24:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:24:10,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:24:10,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:24:10,927 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 02:24:11,114 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:24:11,116 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:24:11,387 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:24:11,400 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:24:11,403 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-12 02:24:11,409 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:24:11 BoogieIcfgContainer [2023-11-12 02:24:11,410 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:24:11,415 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:24:11,416 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:24:11,419 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:24:11,420 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:24:10" (1/3) ... [2023-11-12 02:24:11,420 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c1cb4e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:24:11, skipping insertion in model container [2023-11-12 02:24:11,421 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:24:10" (2/3) ... [2023-11-12 02:24:11,421 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c1cb4e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:24:11, skipping insertion in model container [2023-11-12 02:24:11,421 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:24:11" (3/3) ... [2023-11-12 02:24:11,422 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_69-refine-protected-loop-interval_true.i [2023-11-12 02:24:11,430 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:24:11,440 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:24:11,440 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-12 02:24:11,440 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:24:11,512 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-12 02:24:11,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 131 transitions, 266 flow [2023-11-12 02:24:11,635 INFO L124 PetriNetUnfolderBase]: 12/130 cut-off events. [2023-11-12 02:24:11,636 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:24:11,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 130 events. 12/130 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 300 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 99. Up to 2 conditions per place. [2023-11-12 02:24:11,644 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 131 transitions, 266 flow [2023-11-12 02:24:11,651 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 130 transitions, 263 flow [2023-11-12 02:24:11,655 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:24:11,666 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 130 transitions, 263 flow [2023-11-12 02:24:11,669 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 122 places, 130 transitions, 263 flow [2023-11-12 02:24:11,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 130 transitions, 263 flow [2023-11-12 02:24:11,712 INFO L124 PetriNetUnfolderBase]: 12/130 cut-off events. [2023-11-12 02:24:11,712 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:24:11,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 130 events. 12/130 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 302 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 99. Up to 2 conditions per place. [2023-11-12 02:24:11,720 INFO L119 LiptonReduction]: Number of co-enabled transitions 4720 [2023-11-12 02:24:15,697 INFO L134 LiptonReduction]: Checked pairs total: 8001 [2023-11-12 02:24:15,697 INFO L136 LiptonReduction]: Total number of compositions: 135 [2023-11-12 02:24:15,715 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:24:15,722 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;@19f92016, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:24:15,722 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-12 02:24:15,728 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:24:15,728 INFO L124 PetriNetUnfolderBase]: 5/21 cut-off events. [2023-11-12 02:24:15,728 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:24:15,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:15,729 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 02:24:15,730 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-12 02:24:15,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:15,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1357084004, now seen corresponding path program 1 times [2023-11-12 02:24:15,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:15,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200940700] [2023-11-12 02:24:15,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:15,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:16,054 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 02:24:16,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:16,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200940700] [2023-11-12 02:24:16,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200940700] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:16,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:24:16,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:24:16,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534406708] [2023-11-12 02:24:16,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:16,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:24:16,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:16,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:24:16,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:24:16,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 266 [2023-11-12 02:24:16,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 32 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 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 02:24:16,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:16,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 266 [2023-11-12 02:24:16,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:16,240 INFO L124 PetriNetUnfolderBase]: 157/294 cut-off events. [2023-11-12 02:24:16,240 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:24:16,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 584 conditions, 294 events. 157/294 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1104 event pairs, 86 based on Foata normal form. 11/203 useless extension candidates. Maximal degree in co-relation 575. Up to 244 conditions per place. [2023-11-12 02:24:16,246 INFO L140 encePairwiseOnDemand]: 256/266 looper letters, 32 selfloop transitions, 3 changer transitions 1/39 dead transitions. [2023-11-12 02:24:16,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 39 transitions, 153 flow [2023-11-12 02:24:16,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:24:16,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:24:16,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 385 transitions. [2023-11-12 02:24:16,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824561403508772 [2023-11-12 02:24:16,275 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 385 transitions. [2023-11-12 02:24:16,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 385 transitions. [2023-11-12 02:24:16,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:16,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 385 transitions. [2023-11-12 02:24:16,290 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 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 02:24:16,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 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 02:24:16,299 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 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 02:24:16,301 INFO L175 Difference]: Start difference. First operand has 29 places, 32 transitions, 67 flow. Second operand 3 states and 385 transitions. [2023-11-12 02:24:16,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 39 transitions, 153 flow [2023-11-12 02:24:16,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 39 transitions, 152 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:24:16,308 INFO L231 Difference]: Finished difference. Result has 31 places, 31 transitions, 88 flow [2023-11-12 02:24:16,310 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=31, PETRI_TRANSITIONS=31} [2023-11-12 02:24:16,316 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 2 predicate places. [2023-11-12 02:24:16,316 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 31 transitions, 88 flow [2023-11-12 02:24:16,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 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 02:24:16,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:16,317 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:24:16,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:24:16,318 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-12 02:24:16,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:16,321 INFO L85 PathProgramCache]: Analyzing trace with hash -361939189, now seen corresponding path program 1 times [2023-11-12 02:24:16,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:16,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456747383] [2023-11-12 02:24:16,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:16,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:16,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:16,444 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 02:24:16,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:16,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456747383] [2023-11-12 02:24:16,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456747383] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:16,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:24:16,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:24:16,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306506065] [2023-11-12 02:24:16,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:16,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:24:16,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:16,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:24:16,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:24:16,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 266 [2023-11-12 02:24:16,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 31 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 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 02:24:16,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:16,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 266 [2023-11-12 02:24:16,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:16,585 INFO L124 PetriNetUnfolderBase]: 168/325 cut-off events. [2023-11-12 02:24:16,585 INFO L125 PetriNetUnfolderBase]: For 43/50 co-relation queries the response was YES. [2023-11-12 02:24:16,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 325 events. 168/325 cut-off events. For 43/50 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1395 event pairs, 16 based on Foata normal form. 0/243 useless extension candidates. Maximal degree in co-relation 714. Up to 271 conditions per place. [2023-11-12 02:24:16,590 INFO L140 encePairwiseOnDemand]: 261/266 looper letters, 42 selfloop transitions, 2 changer transitions 1/49 dead transitions. [2023-11-12 02:24:16,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 49 transitions, 224 flow [2023-11-12 02:24:16,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:24:16,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:24:16,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 389 transitions. [2023-11-12 02:24:16,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.487468671679198 [2023-11-12 02:24:16,593 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 389 transitions. [2023-11-12 02:24:16,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 389 transitions. [2023-11-12 02:24:16,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:16,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 389 transitions. [2023-11-12 02:24:16,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:24:16,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 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 02:24:16,599 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 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 02:24:16,599 INFO L175 Difference]: Start difference. First operand has 31 places, 31 transitions, 88 flow. Second operand 3 states and 389 transitions. [2023-11-12 02:24:16,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 49 transitions, 224 flow [2023-11-12 02:24:16,602 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 49 transitions, 214 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:24:16,604 INFO L231 Difference]: Finished difference. Result has 32 places, 32 transitions, 98 flow [2023-11-12 02:24:16,604 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=32, PETRI_TRANSITIONS=32} [2023-11-12 02:24:16,605 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 3 predicate places. [2023-11-12 02:24:16,605 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 32 transitions, 98 flow [2023-11-12 02:24:16,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 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 02:24:16,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:16,606 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:24:16,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:24:16,607 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-12 02:24:16,607 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:16,608 INFO L85 PathProgramCache]: Analyzing trace with hash 2133494374, now seen corresponding path program 1 times [2023-11-12 02:24:16,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:16,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810188039] [2023-11-12 02:24:16,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:16,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:16,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:16,800 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:16,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:16,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810188039] [2023-11-12 02:24:16,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810188039] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:24:16,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673932004] [2023-11-12 02:24:16,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:16,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:24:16,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:24:16,806 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:24:16,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:24:16,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:16,897 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:24:16,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:24:16,955 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:16,956 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:24:16,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673932004] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:16,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:24:16,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-12 02:24:16,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256064847] [2023-11-12 02:24:16,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:16,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:24:16,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:16,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:24:16,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:24:17,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 266 [2023-11-12 02:24:17,005 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 32 transitions, 98 flow. Second operand has 5 states, 5 states have (on average 107.2) internal successors, (536), 5 states have internal predecessors, (536), 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 02:24:17,005 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:17,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 266 [2023-11-12 02:24:17,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:17,232 INFO L124 PetriNetUnfolderBase]: 300/595 cut-off events. [2023-11-12 02:24:17,233 INFO L125 PetriNetUnfolderBase]: For 107/107 co-relation queries the response was YES. [2023-11-12 02:24:17,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1458 conditions, 595 events. 300/595 cut-off events. For 107/107 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 2281 event pairs, 65 based on Foata normal form. 20/514 useless extension candidates. Maximal degree in co-relation 1446. Up to 229 conditions per place. [2023-11-12 02:24:17,239 INFO L140 encePairwiseOnDemand]: 252/266 looper letters, 60 selfloop transitions, 19 changer transitions 1/82 dead transitions. [2023-11-12 02:24:17,240 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 82 transitions, 402 flow [2023-11-12 02:24:17,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:24:17,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-12 02:24:17,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 821 transitions. [2023-11-12 02:24:17,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44092373791621914 [2023-11-12 02:24:17,244 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 821 transitions. [2023-11-12 02:24:17,244 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 821 transitions. [2023-11-12 02:24:17,245 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:17,245 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 821 transitions. [2023-11-12 02:24:17,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 117.28571428571429) internal successors, (821), 7 states have internal predecessors, (821), 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 02:24:17,252 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 266.0) internal successors, (2128), 8 states have internal predecessors, (2128), 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 02:24:17,254 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 266.0) internal successors, (2128), 8 states have internal predecessors, (2128), 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 02:24:17,254 INFO L175 Difference]: Start difference. First operand has 32 places, 32 transitions, 98 flow. Second operand 7 states and 821 transitions. [2023-11-12 02:24:17,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 82 transitions, 402 flow [2023-11-12 02:24:17,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 82 transitions, 398 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:24:17,258 INFO L231 Difference]: Finished difference. Result has 41 places, 47 transitions, 243 flow [2023-11-12 02:24:17,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=243, PETRI_PLACES=41, PETRI_TRANSITIONS=47} [2023-11-12 02:24:17,259 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 12 predicate places. [2023-11-12 02:24:17,259 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 47 transitions, 243 flow [2023-11-12 02:24:17,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 107.2) internal successors, (536), 5 states have internal predecessors, (536), 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 02:24:17,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:17,261 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:24:17,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-12 02:24:17,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:24:17,474 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-12 02:24:17,474 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:17,474 INFO L85 PathProgramCache]: Analyzing trace with hash 2133494435, now seen corresponding path program 1 times [2023-11-12 02:24:17,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:17,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174919645] [2023-11-12 02:24:17,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:17,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:17,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:17,576 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:24:17,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:17,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174919645] [2023-11-12 02:24:17,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174919645] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:17,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:24:17,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:24:17,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264993168] [2023-11-12 02:24:17,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:17,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:24:17,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:17,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:24:17,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:24:17,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 266 [2023-11-12 02:24:17,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 47 transitions, 243 flow. Second operand has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 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 02:24:17,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:17,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 266 [2023-11-12 02:24:17,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:17,792 INFO L124 PetriNetUnfolderBase]: 351/722 cut-off events. [2023-11-12 02:24:17,792 INFO L125 PetriNetUnfolderBase]: For 671/673 co-relation queries the response was YES. [2023-11-12 02:24:17,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2231 conditions, 722 events. 351/722 cut-off events. For 671/673 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 3093 event pairs, 82 based on Foata normal form. 45/701 useless extension candidates. Maximal degree in co-relation 2214. Up to 378 conditions per place. [2023-11-12 02:24:17,801 INFO L140 encePairwiseOnDemand]: 254/266 looper letters, 54 selfloop transitions, 16 changer transitions 0/75 dead transitions. [2023-11-12 02:24:17,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 75 transitions, 514 flow [2023-11-12 02:24:17,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:24:17,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:24:17,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 385 transitions. [2023-11-12 02:24:17,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824561403508772 [2023-11-12 02:24:17,805 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 385 transitions. [2023-11-12 02:24:17,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 385 transitions. [2023-11-12 02:24:17,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:17,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 385 transitions. [2023-11-12 02:24:17,807 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 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 02:24:17,809 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 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 02:24:17,810 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 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 02:24:17,811 INFO L175 Difference]: Start difference. First operand has 41 places, 47 transitions, 243 flow. Second operand 3 states and 385 transitions. [2023-11-12 02:24:17,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 75 transitions, 514 flow [2023-11-12 02:24:17,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 75 transitions, 508 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-11-12 02:24:17,823 INFO L231 Difference]: Finished difference. Result has 45 places, 60 transitions, 418 flow [2023-11-12 02:24:17,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=418, PETRI_PLACES=45, PETRI_TRANSITIONS=60} [2023-11-12 02:24:17,825 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 16 predicate places. [2023-11-12 02:24:17,825 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 60 transitions, 418 flow [2023-11-12 02:24:17,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.33333333333333) internal successors, (346), 3 states have internal predecessors, (346), 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 02:24:17,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:17,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:24:17,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:24:17,827 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-12 02:24:17,829 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:17,829 INFO L85 PathProgramCache]: Analyzing trace with hash 855043857, now seen corresponding path program 1 times [2023-11-12 02:24:17,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:17,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660579087] [2023-11-12 02:24:17,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:17,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:17,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:17,968 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 02:24:17,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:17,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660579087] [2023-11-12 02:24:17,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660579087] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:17,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:24:17,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:24:17,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403719603] [2023-11-12 02:24:17,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:17,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:24:17,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:17,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:24:17,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:24:18,000 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 266 [2023-11-12 02:24:18,001 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 60 transitions, 418 flow. Second operand has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 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 02:24:18,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:18,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 266 [2023-11-12 02:24:18,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:18,124 INFO L124 PetriNetUnfolderBase]: 70/178 cut-off events. [2023-11-12 02:24:18,124 INFO L125 PetriNetUnfolderBase]: For 188/188 co-relation queries the response was YES. [2023-11-12 02:24:18,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 598 conditions, 178 events. 70/178 cut-off events. For 188/188 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 542 event pairs, 4 based on Foata normal form. 26/182 useless extension candidates. Maximal degree in co-relation 577. Up to 124 conditions per place. [2023-11-12 02:24:18,127 INFO L140 encePairwiseOnDemand]: 262/266 looper letters, 31 selfloop transitions, 4 changer transitions 1/41 dead transitions. [2023-11-12 02:24:18,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 297 flow [2023-11-12 02:24:18,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:24:18,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:24:18,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 368 transitions. [2023-11-12 02:24:18,131 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46115288220551376 [2023-11-12 02:24:18,131 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 368 transitions. [2023-11-12 02:24:18,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 368 transitions. [2023-11-12 02:24:18,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:18,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 368 transitions. [2023-11-12 02:24:18,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 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 02:24:18,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 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 02:24:18,137 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 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 02:24:18,137 INFO L175 Difference]: Start difference. First operand has 45 places, 60 transitions, 418 flow. Second operand 3 states and 368 transitions. [2023-11-12 02:24:18,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 297 flow [2023-11-12 02:24:18,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 41 transitions, 263 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-11-12 02:24:18,142 INFO L231 Difference]: Finished difference. Result has 39 places, 35 transitions, 175 flow [2023-11-12 02:24:18,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=175, PETRI_PLACES=39, PETRI_TRANSITIONS=35} [2023-11-12 02:24:18,145 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 10 predicate places. [2023-11-12 02:24:18,146 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 35 transitions, 175 flow [2023-11-12 02:24:18,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.66666666666667) internal successors, (350), 3 states have internal predecessors, (350), 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 02:24:18,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:18,147 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:24:18,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:24:18,148 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-12 02:24:18,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:18,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1713813767, now seen corresponding path program 1 times [2023-11-12 02:24:18,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:18,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701388138] [2023-11-12 02:24:18,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:18,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:18,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:18,235 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:18,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:18,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701388138] [2023-11-12 02:24:18,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701388138] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:24:18,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798963966] [2023-11-12 02:24:18,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:18,242 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:24:18,242 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:24:18,243 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:24:18,250 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:24:18,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:18,342 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:24:18,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:24:18,394 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:18,394 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:24:18,452 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:18,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798963966] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:24:18,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:24:18,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 10 [2023-11-12 02:24:18,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42615435] [2023-11-12 02:24:18,454 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:24:18,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-12 02:24:18,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:18,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-12 02:24:18,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:24:18,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 266 [2023-11-12 02:24:18,608 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 35 transitions, 175 flow. Second operand has 10 states, 10 states have (on average 102.2) internal successors, (1022), 10 states have internal predecessors, (1022), 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 02:24:18,608 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:18,608 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 266 [2023-11-12 02:24:18,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:18,913 INFO L124 PetriNetUnfolderBase]: 157/340 cut-off events. [2023-11-12 02:24:18,913 INFO L125 PetriNetUnfolderBase]: For 247/247 co-relation queries the response was YES. [2023-11-12 02:24:18,914 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1072 conditions, 340 events. 157/340 cut-off events. For 247/247 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1179 event pairs, 20 based on Foata normal form. 2/287 useless extension candidates. Maximal degree in co-relation 1054. Up to 135 conditions per place. [2023-11-12 02:24:18,917 INFO L140 encePairwiseOnDemand]: 252/266 looper letters, 80 selfloop transitions, 28 changer transitions 11/121 dead transitions. [2023-11-12 02:24:18,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 121 transitions, 775 flow [2023-11-12 02:24:18,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-12 02:24:18,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-11-12 02:24:18,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1705 transitions. [2023-11-12 02:24:18,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4006109022556391 [2023-11-12 02:24:18,925 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1705 transitions. [2023-11-12 02:24:18,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1705 transitions. [2023-11-12 02:24:18,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:18,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1705 transitions. [2023-11-12 02:24:18,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 106.5625) internal successors, (1705), 16 states have internal predecessors, (1705), 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 02:24:18,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 266.0) internal successors, (4522), 17 states have internal predecessors, (4522), 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 02:24:18,943 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 266.0) internal successors, (4522), 17 states have internal predecessors, (4522), 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 02:24:18,943 INFO L175 Difference]: Start difference. First operand has 39 places, 35 transitions, 175 flow. Second operand 16 states and 1705 transitions. [2023-11-12 02:24:18,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 121 transitions, 775 flow [2023-11-12 02:24:18,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 121 transitions, 756 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:24:18,948 INFO L231 Difference]: Finished difference. Result has 62 places, 56 transitions, 427 flow [2023-11-12 02:24:18,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=427, PETRI_PLACES=62, PETRI_TRANSITIONS=56} [2023-11-12 02:24:18,949 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 33 predicate places. [2023-11-12 02:24:18,949 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 56 transitions, 427 flow [2023-11-12 02:24:18,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 102.2) internal successors, (1022), 10 states have internal predecessors, (1022), 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 02:24:18,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:18,950 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-11-12 02:24:18,961 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:24:19,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:24:19,157 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-12 02:24:19,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:19,157 INFO L85 PathProgramCache]: Analyzing trace with hash 2005316353, now seen corresponding path program 1 times [2023-11-12 02:24:19,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:19,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070186602] [2023-11-12 02:24:19,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:19,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:19,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:19,206 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:19,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:19,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070186602] [2023-11-12 02:24:19,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070186602] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:19,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:24:19,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:24:19,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824849214] [2023-11-12 02:24:19,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:19,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:24:19,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:19,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:24:19,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:24:19,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 266 [2023-11-12 02:24:19,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 56 transitions, 427 flow. Second operand has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 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 02:24:19,226 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:19,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 266 [2023-11-12 02:24:19,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:19,309 INFO L124 PetriNetUnfolderBase]: 95/252 cut-off events. [2023-11-12 02:24:19,310 INFO L125 PetriNetUnfolderBase]: For 894/894 co-relation queries the response was YES. [2023-11-12 02:24:19,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1012 conditions, 252 events. 95/252 cut-off events. For 894/894 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 852 event pairs, 22 based on Foata normal form. 27/278 useless extension candidates. Maximal degree in co-relation 983. Up to 164 conditions per place. [2023-11-12 02:24:19,313 INFO L140 encePairwiseOnDemand]: 263/266 looper letters, 50 selfloop transitions, 4 changer transitions 3/63 dead transitions. [2023-11-12 02:24:19,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 63 transitions, 568 flow [2023-11-12 02:24:19,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:24:19,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:24:19,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 374 transitions. [2023-11-12 02:24:19,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46867167919799496 [2023-11-12 02:24:19,316 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 374 transitions. [2023-11-12 02:24:19,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 374 transitions. [2023-11-12 02:24:19,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:19,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 374 transitions. [2023-11-12 02:24:19,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 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 02:24:19,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 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 02:24:19,322 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 266.0) internal successors, (1064), 4 states have internal predecessors, (1064), 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 02:24:19,322 INFO L175 Difference]: Start difference. First operand has 62 places, 56 transitions, 427 flow. Second operand 3 states and 374 transitions. [2023-11-12 02:24:19,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 63 transitions, 568 flow [2023-11-12 02:24:19,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 63 transitions, 545 flow, removed 4 selfloop flow, removed 5 redundant places. [2023-11-12 02:24:19,331 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 379 flow [2023-11-12 02:24:19,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=379, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2023-11-12 02:24:19,332 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 29 predicate places. [2023-11-12 02:24:19,332 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 379 flow [2023-11-12 02:24:19,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 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 02:24:19,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:19,333 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:24:19,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:24:19,333 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-12 02:24:19,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:19,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1479851035, now seen corresponding path program 1 times [2023-11-12 02:24:19,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:19,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134377328] [2023-11-12 02:24:19,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:19,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:19,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:19,432 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:19,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:19,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134377328] [2023-11-12 02:24:19,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134377328] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:19,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:24:19,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:24:19,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987854496] [2023-11-12 02:24:19,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:19,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:24:19,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:19,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:24:19,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:24:19,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 266 [2023-11-12 02:24:19,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 379 flow. Second operand has 5 states, 5 states have (on average 108.6) internal successors, (543), 5 states have internal predecessors, (543), 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 02:24:19,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:19,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 266 [2023-11-12 02:24:19,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:19,650 INFO L124 PetriNetUnfolderBase]: 137/327 cut-off events. [2023-11-12 02:24:19,651 INFO L125 PetriNetUnfolderBase]: For 1133/1133 co-relation queries the response was YES. [2023-11-12 02:24:19,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1369 conditions, 327 events. 137/327 cut-off events. For 1133/1133 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1177 event pairs, 20 based on Foata normal form. 2/328 useless extension candidates. Maximal degree in co-relation 1342. Up to 116 conditions per place. [2023-11-12 02:24:19,654 INFO L140 encePairwiseOnDemand]: 257/266 looper letters, 65 selfloop transitions, 22 changer transitions 0/89 dead transitions. [2023-11-12 02:24:19,655 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 89 transitions, 828 flow [2023-11-12 02:24:19,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:24:19,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:24:19,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 573 transitions. [2023-11-12 02:24:19,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43082706766917295 [2023-11-12 02:24:19,658 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 573 transitions. [2023-11-12 02:24:19,658 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 573 transitions. [2023-11-12 02:24:19,659 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:19,659 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 573 transitions. [2023-11-12 02:24:19,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.6) internal successors, (573), 5 states have internal predecessors, (573), 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 02:24:19,664 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 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 02:24:19,664 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 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 02:24:19,665 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 379 flow. Second operand 5 states and 573 transitions. [2023-11-12 02:24:19,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 89 transitions, 828 flow [2023-11-12 02:24:19,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 89 transitions, 790 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-11-12 02:24:19,672 INFO L231 Difference]: Finished difference. Result has 60 places, 58 transitions, 513 flow [2023-11-12 02:24:19,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=513, PETRI_PLACES=60, PETRI_TRANSITIONS=58} [2023-11-12 02:24:19,674 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 31 predicate places. [2023-11-12 02:24:19,674 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 58 transitions, 513 flow [2023-11-12 02:24:19,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.6) internal successors, (543), 5 states have internal predecessors, (543), 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 02:24:19,675 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:19,675 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:24:19,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:24:19,675 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-12 02:24:19,676 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:19,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1360257182, now seen corresponding path program 1 times [2023-11-12 02:24:19,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:19,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740435882] [2023-11-12 02:24:19,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:19,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:19,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:19,817 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:19,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:19,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740435882] [2023-11-12 02:24:19,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740435882] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:19,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:24:19,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-12 02:24:19,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616181049] [2023-11-12 02:24:19,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:19,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:24:19,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:19,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:24:19,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:24:19,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 266 [2023-11-12 02:24:19,900 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 58 transitions, 513 flow. Second operand has 7 states, 7 states have (on average 101.71428571428571) internal successors, (712), 7 states have internal predecessors, (712), 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 02:24:19,900 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:19,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 266 [2023-11-12 02:24:19,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:20,105 INFO L124 PetriNetUnfolderBase]: 162/389 cut-off events. [2023-11-12 02:24:20,106 INFO L125 PetriNetUnfolderBase]: For 1580/1580 co-relation queries the response was YES. [2023-11-12 02:24:20,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1669 conditions, 389 events. 162/389 cut-off events. For 1580/1580 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1312 event pairs, 64 based on Foata normal form. 15/404 useless extension candidates. Maximal degree in co-relation 1639. Up to 193 conditions per place. [2023-11-12 02:24:20,110 INFO L140 encePairwiseOnDemand]: 255/266 looper letters, 67 selfloop transitions, 19 changer transitions 9/97 dead transitions. [2023-11-12 02:24:20,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 97 transitions, 968 flow [2023-11-12 02:24:20,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:24:20,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-12 02:24:20,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 855 transitions. [2023-11-12 02:24:20,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4017857142857143 [2023-11-12 02:24:20,115 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 855 transitions. [2023-11-12 02:24:20,116 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 855 transitions. [2023-11-12 02:24:20,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:20,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 855 transitions. [2023-11-12 02:24:20,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 106.875) internal successors, (855), 8 states have internal predecessors, (855), 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 02:24:20,125 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 266.0) internal successors, (2394), 9 states have internal predecessors, (2394), 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 02:24:20,127 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 266.0) internal successors, (2394), 9 states have internal predecessors, (2394), 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 02:24:20,127 INFO L175 Difference]: Start difference. First operand has 60 places, 58 transitions, 513 flow. Second operand 8 states and 855 transitions. [2023-11-12 02:24:20,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 97 transitions, 968 flow [2023-11-12 02:24:20,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 97 transitions, 956 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-12 02:24:20,138 INFO L231 Difference]: Finished difference. Result has 70 places, 63 transitions, 641 flow [2023-11-12 02:24:20,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=493, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=641, PETRI_PLACES=70, PETRI_TRANSITIONS=63} [2023-11-12 02:24:20,141 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 41 predicate places. [2023-11-12 02:24:20,141 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 63 transitions, 641 flow [2023-11-12 02:24:20,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 101.71428571428571) internal successors, (712), 7 states have internal predecessors, (712), 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 02:24:20,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:20,142 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1] [2023-11-12 02:24:20,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-12 02:24:20,143 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-12 02:24:20,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:20,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1337644672, now seen corresponding path program 1 times [2023-11-12 02:24:20,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:20,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544505690] [2023-11-12 02:24:20,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:20,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:20,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:20,256 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:20,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:20,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544505690] [2023-11-12 02:24:20,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544505690] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:24:20,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788738143] [2023-11-12 02:24:20,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:20,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:24:20,258 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:24:20,259 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:24:20,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:24:20,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:20,360 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:24:20,362 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:24:20,402 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:20,402 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:24:20,460 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:20,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788738143] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:24:20,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:24:20,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2023-11-12 02:24:20,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131944859] [2023-11-12 02:24:20,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:24:20,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:24:20,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:20,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:24:20,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:24:20,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 266 [2023-11-12 02:24:20,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 63 transitions, 641 flow. Second operand has 9 states, 9 states have (on average 119.44444444444444) internal successors, (1075), 9 states have internal predecessors, (1075), 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 02:24:20,501 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:20,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 266 [2023-11-12 02:24:20,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:20,825 INFO L124 PetriNetUnfolderBase]: 365/893 cut-off events. [2023-11-12 02:24:20,825 INFO L125 PetriNetUnfolderBase]: For 4324/4324 co-relation queries the response was YES. [2023-11-12 02:24:20,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4008 conditions, 893 events. 365/893 cut-off events. For 4324/4324 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3405 event pairs, 18 based on Foata normal form. 94/987 useless extension candidates. Maximal degree in co-relation 3972. Up to 323 conditions per place. [2023-11-12 02:24:20,835 INFO L140 encePairwiseOnDemand]: 262/266 looper letters, 163 selfloop transitions, 13 changer transitions 13/199 dead transitions. [2023-11-12 02:24:20,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 199 transitions, 2344 flow [2023-11-12 02:24:20,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:24:20,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-12 02:24:20,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1032 transitions. [2023-11-12 02:24:20,840 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4849624060150376 [2023-11-12 02:24:20,840 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1032 transitions. [2023-11-12 02:24:20,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1032 transitions. [2023-11-12 02:24:20,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:20,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1032 transitions. [2023-11-12 02:24:20,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 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 02:24:20,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 266.0) internal successors, (2394), 9 states have internal predecessors, (2394), 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 02:24:20,850 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 266.0) internal successors, (2394), 9 states have internal predecessors, (2394), 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 02:24:20,851 INFO L175 Difference]: Start difference. First operand has 70 places, 63 transitions, 641 flow. Second operand 8 states and 1032 transitions. [2023-11-12 02:24:20,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 199 transitions, 2344 flow [2023-11-12 02:24:20,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 199 transitions, 2260 flow, removed 35 selfloop flow, removed 3 redundant places. [2023-11-12 02:24:20,873 INFO L231 Difference]: Finished difference. Result has 77 places, 71 transitions, 724 flow [2023-11-12 02:24:20,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=617, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=724, PETRI_PLACES=77, PETRI_TRANSITIONS=71} [2023-11-12 02:24:20,874 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 48 predicate places. [2023-11-12 02:24:20,875 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 71 transitions, 724 flow [2023-11-12 02:24:20,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 119.44444444444444) internal successors, (1075), 9 states have internal predecessors, (1075), 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 02:24:20,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:20,876 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:24:20,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-12 02:24:21,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:24:21,082 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-12 02:24:21,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:21,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1807403449, now seen corresponding path program 2 times [2023-11-12 02:24:21,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:21,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009071787] [2023-11-12 02:24:21,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:21,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:21,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:21,190 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 11 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:21,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:21,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009071787] [2023-11-12 02:24:21,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009071787] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:24:21,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624903313] [2023-11-12 02:24:21,191 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:24:21,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:24:21,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:24:21,193 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:24:21,219 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:24:21,302 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-12 02:24:21,302 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:24:21,303 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:24:21,305 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:24:21,343 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-12 02:24:21,344 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:24:21,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624903313] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:24:21,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:24:21,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-11-12 02:24:21,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090618039] [2023-11-12 02:24:21,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:24:21,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:24:21,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:21,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:24:21,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:24:21,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 266 [2023-11-12 02:24:21,382 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 71 transitions, 724 flow. Second operand has 4 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 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 02:24:21,382 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:21,382 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 266 [2023-11-12 02:24:21,382 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:21,620 INFO L124 PetriNetUnfolderBase]: 401/936 cut-off events. [2023-11-12 02:24:21,621 INFO L125 PetriNetUnfolderBase]: For 5672/5673 co-relation queries the response was YES. [2023-11-12 02:24:21,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4773 conditions, 936 events. 401/936 cut-off events. For 5672/5673 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 3487 event pairs, 103 based on Foata normal form. 9/941 useless extension candidates. Maximal degree in co-relation 4734. Up to 628 conditions per place. [2023-11-12 02:24:21,632 INFO L140 encePairwiseOnDemand]: 258/266 looper letters, 52 selfloop transitions, 27 changer transitions 0/85 dead transitions. [2023-11-12 02:24:21,632 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 85 transitions, 1001 flow [2023-11-12 02:24:21,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:24:21,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-12 02:24:21,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 562 transitions. [2023-11-12 02:24:21,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42255639097744363 [2023-11-12 02:24:21,637 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 562 transitions. [2023-11-12 02:24:21,637 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 562 transitions. [2023-11-12 02:24:21,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:21,638 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 562 transitions. [2023-11-12 02:24:21,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 112.4) internal successors, (562), 5 states have internal predecessors, (562), 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 02:24:21,678 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 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 02:24:21,679 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 266.0) internal successors, (1596), 6 states have internal predecessors, (1596), 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 02:24:21,679 INFO L175 Difference]: Start difference. First operand has 77 places, 71 transitions, 724 flow. Second operand 5 states and 562 transitions. [2023-11-12 02:24:21,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 85 transitions, 1001 flow [2023-11-12 02:24:21,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 85 transitions, 935 flow, removed 29 selfloop flow, removed 2 redundant places. [2023-11-12 02:24:21,698 INFO L231 Difference]: Finished difference. Result has 77 places, 70 transitions, 714 flow [2023-11-12 02:24:21,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=714, PETRI_PLACES=77, PETRI_TRANSITIONS=70} [2023-11-12 02:24:21,699 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 48 predicate places. [2023-11-12 02:24:21,699 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 70 transitions, 714 flow [2023-11-12 02:24:21,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 111.25) internal successors, (445), 4 states have internal predecessors, (445), 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 02:24:21,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:21,700 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:24:21,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:24:21,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:24:21,907 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting workerErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-12 02:24:21,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:21,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1743610363, now seen corresponding path program 1 times [2023-11-12 02:24:21,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:21,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673289956] [2023-11-12 02:24:21,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:21,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:21,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:22,062 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:22,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:22,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673289956] [2023-11-12 02:24:22,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673289956] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:24:22,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992067107] [2023-11-12 02:24:22,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:22,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:24:22,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:24:22,065 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:24:22,092 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:24:22,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:22,173 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-12 02:24:22,175 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:24:22,232 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:22,233 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:24:22,355 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:22,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992067107] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:24:22,356 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:24:22,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-12 02:24:22,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825922714] [2023-11-12 02:24:22,359 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:24:22,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-12 02:24:22,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:22,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-12 02:24:22,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-11-12 02:24:22,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 266 [2023-11-12 02:24:22,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 70 transitions, 714 flow. Second operand has 17 states, 17 states have (on average 105.94117647058823) internal successors, (1801), 17 states have internal predecessors, (1801), 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 02:24:22,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:22,482 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 266 [2023-11-12 02:24:22,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:22,894 INFO L124 PetriNetUnfolderBase]: 474/1077 cut-off events. [2023-11-12 02:24:22,894 INFO L125 PetriNetUnfolderBase]: For 5884/5884 co-relation queries the response was YES. [2023-11-12 02:24:22,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5231 conditions, 1077 events. 474/1077 cut-off events. For 5884/5884 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4186 event pairs, 134 based on Foata normal form. 28/1104 useless extension candidates. Maximal degree in co-relation 5190. Up to 418 conditions per place. [2023-11-12 02:24:22,943 INFO L140 encePairwiseOnDemand]: 257/266 looper letters, 71 selfloop transitions, 37 changer transitions 23/133 dead transitions. [2023-11-12 02:24:22,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 133 transitions, 1436 flow [2023-11-12 02:24:22,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-12 02:24:22,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-12 02:24:22,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1628 transitions. [2023-11-12 02:24:22,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4080200501253133 [2023-11-12 02:24:22,953 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1628 transitions. [2023-11-12 02:24:22,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1628 transitions. [2023-11-12 02:24:22,955 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:22,955 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1628 transitions. [2023-11-12 02:24:22,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 108.53333333333333) internal successors, (1628), 15 states have internal predecessors, (1628), 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 02:24:22,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 266.0) internal successors, (4256), 16 states have internal predecessors, (4256), 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 02:24:22,972 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 266.0) internal successors, (4256), 16 states have internal predecessors, (4256), 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 02:24:22,973 INFO L175 Difference]: Start difference. First operand has 77 places, 70 transitions, 714 flow. Second operand 15 states and 1628 transitions. [2023-11-12 02:24:22,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 133 transitions, 1436 flow [2023-11-12 02:24:22,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 133 transitions, 1400 flow, removed 7 selfloop flow, removed 2 redundant places. [2023-11-12 02:24:22,998 INFO L231 Difference]: Finished difference. Result has 89 places, 73 transitions, 816 flow [2023-11-12 02:24:22,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=816, PETRI_PLACES=89, PETRI_TRANSITIONS=73} [2023-11-12 02:24:23,000 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 60 predicate places. [2023-11-12 02:24:23,000 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 73 transitions, 816 flow [2023-11-12 02:24:23,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 105.94117647058823) internal successors, (1801), 17 states have internal predecessors, (1801), 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 02:24:23,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:23,002 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 6, 4, 4, 4, 3, 1, 1, 1, 1] [2023-11-12 02:24:23,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:24:23,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-11-12 02:24:23,209 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-12 02:24:23,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:23,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1762009039, now seen corresponding path program 2 times [2023-11-12 02:24:23,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:23,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369311417] [2023-11-12 02:24:23,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:23,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:23,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:23,460 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:23,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:23,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369311417] [2023-11-12 02:24:23,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369311417] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:24:23,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059264986] [2023-11-12 02:24:23,461 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:24:23,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:24:23,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:24:23,463 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:24:23,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 02:24:23,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-12 02:24:23,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:24:23,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 10 conjunts are in the unsatisfiable core [2023-11-12 02:24:23,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:24:23,771 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 12 proven. 72 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-12 02:24:23,771 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:24:23,985 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 12 proven. 72 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-12 02:24:23,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059264986] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:24:23,986 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:24:23,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 27 [2023-11-12 02:24:23,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90483397] [2023-11-12 02:24:23,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:24:23,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-12 02:24:23,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:23,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-12 02:24:23,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=557, Unknown=0, NotChecked=0, Total=702 [2023-11-12 02:24:24,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 266 [2023-11-12 02:24:24,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 73 transitions, 816 flow. Second operand has 27 states, 27 states have (on average 102.14814814814815) internal successors, (2758), 27 states have internal predecessors, (2758), 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 02:24:24,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:24,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 266 [2023-11-12 02:24:24,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:25,458 INFO L124 PetriNetUnfolderBase]: 386/1093 cut-off events. [2023-11-12 02:24:25,459 INFO L125 PetriNetUnfolderBase]: For 7771/7771 co-relation queries the response was YES. [2023-11-12 02:24:25,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5401 conditions, 1093 events. 386/1093 cut-off events. For 7771/7771 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4730 event pairs, 33 based on Foata normal form. 43/1136 useless extension candidates. Maximal degree in co-relation 5358. Up to 311 conditions per place. [2023-11-12 02:24:25,471 INFO L140 encePairwiseOnDemand]: 256/266 looper letters, 242 selfloop transitions, 97 changer transitions 45/386 dead transitions. [2023-11-12 02:24:25,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 386 transitions, 4392 flow [2023-11-12 02:24:25,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-11-12 02:24:25,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-11-12 02:24:25,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 4716 transitions. [2023-11-12 02:24:25,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39398496240601505 [2023-11-12 02:24:25,487 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 4716 transitions. [2023-11-12 02:24:25,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 4716 transitions. [2023-11-12 02:24:25,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:25,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 4716 transitions. [2023-11-12 02:24:25,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 104.8) internal successors, (4716), 45 states have internal predecessors, (4716), 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 02:24:25,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 266.0) internal successors, (12236), 46 states have internal predecessors, (12236), 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 02:24:25,527 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 266.0) internal successors, (12236), 46 states have internal predecessors, (12236), 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 02:24:25,527 INFO L175 Difference]: Start difference. First operand has 89 places, 73 transitions, 816 flow. Second operand 45 states and 4716 transitions. [2023-11-12 02:24:25,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 386 transitions, 4392 flow [2023-11-12 02:24:25,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 386 transitions, 4339 flow, removed 15 selfloop flow, removed 5 redundant places. [2023-11-12 02:24:25,556 INFO L231 Difference]: Finished difference. Result has 135 places, 143 transitions, 2052 flow [2023-11-12 02:24:25,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=791, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=2052, PETRI_PLACES=135, PETRI_TRANSITIONS=143} [2023-11-12 02:24:25,557 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 106 predicate places. [2023-11-12 02:24:25,557 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 143 transitions, 2052 flow [2023-11-12 02:24:25,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 102.14814814814815) internal successors, (2758), 27 states have internal predecessors, (2758), 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 02:24:25,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:25,559 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 7, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:24:25,570 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-12 02:24:25,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:24:25,766 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-12 02:24:25,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:25,766 INFO L85 PathProgramCache]: Analyzing trace with hash -648255991, now seen corresponding path program 1 times [2023-11-12 02:24:25,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:25,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694375446] [2023-11-12 02:24:25,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:25,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:25,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:25,978 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:25,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:25,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694375446] [2023-11-12 02:24:25,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694375446] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:24:25,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1761074384] [2023-11-12 02:24:25,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:25,979 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:24:25,980 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:24:25,981 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:24:26,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 02:24:26,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:26,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 292 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-12 02:24:26,127 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:24:26,218 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 54 proven. 8 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-12 02:24:26,219 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:24:26,344 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 54 proven. 8 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-12 02:24:26,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1761074384] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:24:26,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:24:26,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 22 [2023-11-12 02:24:26,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771599799] [2023-11-12 02:24:26,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:24:26,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-12 02:24:26,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:26,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-12 02:24:26,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2023-11-12 02:24:26,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 266 [2023-11-12 02:24:26,633 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 143 transitions, 2052 flow. Second operand has 22 states, 22 states have (on average 96.81818181818181) internal successors, (2130), 22 states have internal predecessors, (2130), 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 02:24:26,633 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:26,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 266 [2023-11-12 02:24:26,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:28,950 INFO L124 PetriNetUnfolderBase]: 517/1507 cut-off events. [2023-11-12 02:24:28,950 INFO L125 PetriNetUnfolderBase]: For 17339/17339 co-relation queries the response was YES. [2023-11-12 02:24:28,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8195 conditions, 1507 events. 517/1507 cut-off events. For 17339/17339 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 6458 event pairs, 18 based on Foata normal form. 80/1587 useless extension candidates. Maximal degree in co-relation 8144. Up to 505 conditions per place. [2023-11-12 02:24:28,970 INFO L140 encePairwiseOnDemand]: 255/266 looper letters, 251 selfloop transitions, 283 changer transitions 15/551 dead transitions. [2023-11-12 02:24:28,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 551 transitions, 6777 flow [2023-11-12 02:24:28,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2023-11-12 02:24:28,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2023-11-12 02:24:28,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 8506 transitions. [2023-11-12 02:24:28,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36755682309221327 [2023-11-12 02:24:28,993 INFO L72 ComplementDD]: Start complementDD. Operand 87 states and 8506 transitions. [2023-11-12 02:24:28,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 87 states and 8506 transitions. [2023-11-12 02:24:28,997 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:28,997 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 87 states and 8506 transitions. [2023-11-12 02:24:29,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 88 states, 87 states have (on average 97.77011494252874) internal successors, (8506), 87 states have internal predecessors, (8506), 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 02:24:29,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 88 states, 88 states have (on average 266.0) internal successors, (23408), 88 states have internal predecessors, (23408), 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 02:24:29,059 INFO L81 ComplementDD]: Finished complementDD. Result has 88 states, 88 states have (on average 266.0) internal successors, (23408), 88 states have internal predecessors, (23408), 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 02:24:29,059 INFO L175 Difference]: Start difference. First operand has 135 places, 143 transitions, 2052 flow. Second operand 87 states and 8506 transitions. [2023-11-12 02:24:29,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 551 transitions, 6777 flow [2023-11-12 02:24:29,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 551 transitions, 6534 flow, removed 58 selfloop flow, removed 17 redundant places. [2023-11-12 02:24:29,124 INFO L231 Difference]: Finished difference. Result has 222 places, 320 transitions, 4720 flow [2023-11-12 02:24:29,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=1849, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=87, PETRI_FLOW=4720, PETRI_PLACES=222, PETRI_TRANSITIONS=320} [2023-11-12 02:24:29,125 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 193 predicate places. [2023-11-12 02:24:29,125 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 320 transitions, 4720 flow [2023-11-12 02:24:29,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 96.81818181818181) internal successors, (2130), 22 states have internal predecessors, (2130), 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 02:24:29,127 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:29,127 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 9, 8, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:24:29,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-12 02:24:29,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:24:29,334 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-12 02:24:29,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:29,334 INFO L85 PathProgramCache]: Analyzing trace with hash 680336388, now seen corresponding path program 2 times [2023-11-12 02:24:29,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:29,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679672071] [2023-11-12 02:24:29,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:29,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:29,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:29,644 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:29,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:29,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679672071] [2023-11-12 02:24:29,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679672071] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:24:29,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505986141] [2023-11-12 02:24:29,645 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:24:29,646 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:24:29,646 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:24:29,649 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:24:29,682 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-12 02:24:29,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-12 02:24:29,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:24:29,818 INFO L262 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-12 02:24:29,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:24:29,992 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 16 proven. 94 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-12 02:24:29,993 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:24:30,226 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 16 proven. 94 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2023-11-12 02:24:30,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505986141] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:24:30,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:24:30,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 27 [2023-11-12 02:24:30,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72495934] [2023-11-12 02:24:30,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:24:30,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-11-12 02:24:30,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:30,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-11-12 02:24:30,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=571, Unknown=0, NotChecked=0, Total=702 [2023-11-12 02:24:30,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 266 [2023-11-12 02:24:30,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 320 transitions, 4720 flow. Second operand has 27 states, 27 states have (on average 96.77777777777777) internal successors, (2613), 27 states have internal predecessors, (2613), 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 02:24:30,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:30,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 266 [2023-11-12 02:24:30,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:35,693 INFO L124 PetriNetUnfolderBase]: 905/2609 cut-off events. [2023-11-12 02:24:35,693 INFO L125 PetriNetUnfolderBase]: For 70836/70836 co-relation queries the response was YES. [2023-11-12 02:24:35,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17697 conditions, 2609 events. 905/2609 cut-off events. For 70836/70836 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 13146 event pairs, 51 based on Foata normal form. 109/2718 useless extension candidates. Maximal degree in co-relation 17623. Up to 879 conditions per place. [2023-11-12 02:24:35,736 INFO L140 encePairwiseOnDemand]: 255/266 looper letters, 559 selfloop transitions, 500 changer transitions 28/1089 dead transitions. [2023-11-12 02:24:35,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 394 places, 1089 transitions, 14989 flow [2023-11-12 02:24:35,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2023-11-12 02:24:35,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2023-11-12 02:24:35,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 17054 transitions. [2023-11-12 02:24:35,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3684642641085472 [2023-11-12 02:24:35,771 INFO L72 ComplementDD]: Start complementDD. Operand 174 states and 17054 transitions. [2023-11-12 02:24:35,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 174 states and 17054 transitions. [2023-11-12 02:24:35,780 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:35,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 174 states and 17054 transitions. [2023-11-12 02:24:35,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 175 states, 174 states have (on average 98.01149425287356) internal successors, (17054), 174 states have internal predecessors, (17054), 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 02:24:35,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 175 states, 175 states have (on average 266.0) internal successors, (46550), 175 states have internal predecessors, (46550), 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 02:24:35,880 INFO L81 ComplementDD]: Finished complementDD. Result has 175 states, 175 states have (on average 266.0) internal successors, (46550), 175 states have internal predecessors, (46550), 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 02:24:35,880 INFO L175 Difference]: Start difference. First operand has 222 places, 320 transitions, 4720 flow. Second operand 174 states and 17054 transitions. [2023-11-12 02:24:35,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 394 places, 1089 transitions, 14989 flow [2023-11-12 02:24:36,121 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 387 places, 1089 transitions, 13583 flow, removed 501 selfloop flow, removed 7 redundant places. [2023-11-12 02:24:36,144 INFO L231 Difference]: Finished difference. Result has 440 places, 589 transitions, 9321 flow [2023-11-12 02:24:36,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=4052, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=241, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=174, PETRI_FLOW=9321, PETRI_PLACES=440, PETRI_TRANSITIONS=589} [2023-11-12 02:24:36,146 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 411 predicate places. [2023-11-12 02:24:36,146 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 589 transitions, 9321 flow [2023-11-12 02:24:36,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 96.77777777777777) internal successors, (2613), 27 states have internal predecessors, (2613), 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 02:24:36,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:36,148 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1] [2023-11-12 02:24:36,162 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-12 02:24:36,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-12 02:24:36,357 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-12 02:24:36,357 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:36,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1714565815, now seen corresponding path program 3 times [2023-11-12 02:24:36,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:36,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224408285] [2023-11-12 02:24:36,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:36,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:36,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:36,664 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 252 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:36,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:36,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224408285] [2023-11-12 02:24:36,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224408285] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:24:36,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265890517] [2023-11-12 02:24:36,665 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 02:24:36,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:24:36,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:24:36,667 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:24:36,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-12 02:24:36,859 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2023-11-12 02:24:36,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:24:36,862 INFO L262 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-12 02:24:36,865 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:24:37,277 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 18 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:37,277 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:24:37,876 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 18 proven. 234 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:37,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265890517] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:24:37,876 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:24:37,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 20, 20] total 50 [2023-11-12 02:24:37,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577026635] [2023-11-12 02:24:37,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:24:37,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2023-11-12 02:24:37,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:37,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2023-11-12 02:24:37,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=485, Invalid=1965, Unknown=0, NotChecked=0, Total=2450 [2023-11-12 02:24:38,286 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 266 [2023-11-12 02:24:38,290 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 589 transitions, 9321 flow. Second operand has 50 states, 50 states have (on average 102.04) internal successors, (5102), 50 states have internal predecessors, (5102), 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 02:24:38,291 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:38,291 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 266 [2023-11-12 02:24:38,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:42,041 INFO L124 PetriNetUnfolderBase]: 1122/3252 cut-off events. [2023-11-12 02:24:42,042 INFO L125 PetriNetUnfolderBase]: For 238058/238058 co-relation queries the response was YES. [2023-11-12 02:24:42,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28972 conditions, 3252 events. 1122/3252 cut-off events. For 238058/238058 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 17146 event pairs, 151 based on Foata normal form. 102/3354 useless extension candidates. Maximal degree in co-relation 28846. Up to 795 conditions per place. [2023-11-12 02:24:42,091 INFO L140 encePairwiseOnDemand]: 256/266 looper letters, 569 selfloop transitions, 382 changer transitions 26/979 dead transitions. [2023-11-12 02:24:42,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 979 transitions, 16406 flow [2023-11-12 02:24:42,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2023-11-12 02:24:42,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2023-11-12 02:24:42,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 7457 transitions. [2023-11-12 02:24:42,105 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.394842740654453 [2023-11-12 02:24:42,106 INFO L72 ComplementDD]: Start complementDD. Operand 71 states and 7457 transitions. [2023-11-12 02:24:42,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 71 states and 7457 transitions. [2023-11-12 02:24:42,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:42,109 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 71 states and 7457 transitions. [2023-11-12 02:24:42,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 72 states, 71 states have (on average 105.02816901408451) internal successors, (7457), 71 states have internal predecessors, (7457), 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 02:24:42,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 72 states, 72 states have (on average 266.0) internal successors, (19152), 72 states have internal predecessors, (19152), 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 02:24:42,144 INFO L81 ComplementDD]: Finished complementDD. Result has 72 states, 72 states have (on average 266.0) internal successors, (19152), 72 states have internal predecessors, (19152), 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 02:24:42,144 INFO L175 Difference]: Start difference. First operand has 440 places, 589 transitions, 9321 flow. Second operand 71 states and 7457 transitions. [2023-11-12 02:24:42,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 979 transitions, 16406 flow [2023-11-12 02:24:42,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 979 transitions, 15173 flow, removed 400 selfloop flow, removed 24 redundant places. [2023-11-12 02:24:42,750 INFO L231 Difference]: Finished difference. Result has 501 places, 653 transitions, 10393 flow [2023-11-12 02:24:42,751 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=8245, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=589, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=323, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=71, PETRI_FLOW=10393, PETRI_PLACES=501, PETRI_TRANSITIONS=653} [2023-11-12 02:24:42,752 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 472 predicate places. [2023-11-12 02:24:42,752 INFO L495 AbstractCegarLoop]: Abstraction has has 501 places, 653 transitions, 10393 flow [2023-11-12 02:24:42,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 102.04) internal successors, (5102), 50 states have internal predecessors, (5102), 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 02:24:42,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:42,753 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 10, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:24:42,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-12 02:24:42,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-12 02:24:42,960 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-12 02:24:42,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:42,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1988723908, now seen corresponding path program 3 times [2023-11-12 02:24:42,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:42,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967484221] [2023-11-12 02:24:42,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:42,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:43,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:43,346 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 250 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:43,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:43,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967484221] [2023-11-12 02:24:43,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967484221] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:24:43,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590744379] [2023-11-12 02:24:43,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-12 02:24:43,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:24:43,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:24:43,348 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:24:43,363 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-12 02:24:43,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2023-11-12 02:24:43,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:24:43,564 INFO L262 TraceCheckSpWp]: Trace formula consists of 376 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-12 02:24:43,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:24:43,655 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 250 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:43,655 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:24:43,957 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 250 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:43,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590744379] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:24:43,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:24:43,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-11-12 02:24:43,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818292162] [2023-11-12 02:24:43,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:24:43,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-12 02:24:43,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:43,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-12 02:24:43,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-11-12 02:24:44,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 266 [2023-11-12 02:24:44,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 501 places, 653 transitions, 10393 flow. Second operand has 25 states, 25 states have (on average 119.48) internal successors, (2987), 25 states have internal predecessors, (2987), 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 02:24:44,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:44,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 266 [2023-11-12 02:24:44,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:24:48,804 INFO L124 PetriNetUnfolderBase]: 2232/6775 cut-off events. [2023-11-12 02:24:48,804 INFO L125 PetriNetUnfolderBase]: For 1104032/1104068 co-relation queries the response was YES. [2023-11-12 02:24:48,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69082 conditions, 6775 events. 2232/6775 cut-off events. For 1104032/1104068 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 37780 event pairs, 60 based on Foata normal form. 899/7674 useless extension candidates. Maximal degree in co-relation 68942. Up to 1812 conditions per place. [2023-11-12 02:24:49,004 INFO L140 encePairwiseOnDemand]: 263/266 looper letters, 1286 selfloop transitions, 182 changer transitions 37/1525 dead transitions. [2023-11-12 02:24:49,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 1525 transitions, 28805 flow [2023-11-12 02:24:49,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-12 02:24:49,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-11-12 02:24:49,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3061 transitions. [2023-11-12 02:24:49,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47947994987468673 [2023-11-12 02:24:49,013 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3061 transitions. [2023-11-12 02:24:49,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3061 transitions. [2023-11-12 02:24:49,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:24:49,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3061 transitions. [2023-11-12 02:24:49,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 127.54166666666667) internal successors, (3061), 24 states have internal predecessors, (3061), 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 02:24:49,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 266.0) internal successors, (6650), 25 states have internal predecessors, (6650), 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 02:24:49,026 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 266.0) internal successors, (6650), 25 states have internal predecessors, (6650), 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 02:24:49,027 INFO L175 Difference]: Start difference. First operand has 501 places, 653 transitions, 10393 flow. Second operand 24 states and 3061 transitions. [2023-11-12 02:24:49,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 1525 transitions, 28805 flow [2023-11-12 02:24:50,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 1525 transitions, 28184 flow, removed 99 selfloop flow, removed 38 redundant places. [2023-11-12 02:24:50,055 INFO L231 Difference]: Finished difference. Result has 496 places, 665 transitions, 10931 flow [2023-11-12 02:24:50,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=266, PETRI_DIFFERENCE_MINUEND_FLOW=9796, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=653, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=10931, PETRI_PLACES=496, PETRI_TRANSITIONS=665} [2023-11-12 02:24:50,056 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 467 predicate places. [2023-11-12 02:24:50,056 INFO L495 AbstractCegarLoop]: Abstraction has has 496 places, 665 transitions, 10931 flow [2023-11-12 02:24:50,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 119.48) internal successors, (2987), 25 states have internal predecessors, (2987), 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 02:24:50,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:24:50,057 INFO L208 CegarLoopForPetriNet]: trace histogram [23, 23, 22, 17, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:24:50,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-12 02:24:50,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-12 02:24:50,258 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 6 more)] === [2023-11-12 02:24:50,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:24:50,258 INFO L85 PathProgramCache]: Analyzing trace with hash -159637100, now seen corresponding path program 4 times [2023-11-12 02:24:50,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:24:50,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817816983] [2023-11-12 02:24:50,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:24:50,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:24:50,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:24:51,259 INFO L134 CoverageAnalysis]: Checked inductivity of 1042 backedges. 0 proven. 1042 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:24:51,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:24:51,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817816983] [2023-11-12 02:24:51,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817816983] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:24:51,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674306307] [2023-11-12 02:24:51,260 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-12 02:24:51,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:24:51,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:24:51,262 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:24:51,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6732c8d2-b99c-416e-888a-b1241061d96d/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-12 02:24:51,557 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-12 02:24:51,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:24:51,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-12 02:24:51,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:24:51,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1042 backedges. 428 proven. 96 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2023-11-12 02:24:51,868 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:24:52,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1042 backedges. 428 proven. 96 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2023-11-12 02:24:52,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1674306307] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:24:52,222 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:24:52,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 13, 13] total 49 [2023-11-12 02:24:52,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572840855] [2023-11-12 02:24:52,222 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:24:52,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-11-12 02:24:52,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:24:52,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-11-12 02:24:52,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=460, Invalid=1892, Unknown=0, NotChecked=0, Total=2352 [2023-11-12 02:24:52,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 266 [2023-11-12 02:24:52,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 496 places, 665 transitions, 10931 flow. Second operand has 49 states, 49 states have (on average 96.44897959183673) internal successors, (4726), 49 states have internal predecessors, (4726), 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 02:24:52,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:24:52,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 266 [2023-11-12 02:24:52,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand