./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec73c17-fc47-4954-bc6f-9445be92a046/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec73c17-fc47-4954-bc6f-9445be92a046/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec73c17-fc47-4954-bc6f-9445be92a046/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec73c17-fc47-4954-bc6f-9445be92a046/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec73c17-fc47-4954-bc6f-9445be92a046/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec73c17-fc47-4954-bc6f-9445be92a046/bin/uautomizer-verify-uCwYo4JHxu --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:40:18,816 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:40:18,888 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec73c17-fc47-4954-bc6f-9445be92a046/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:40:18,894 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:40:18,894 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:40:18,922 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:40:18,923 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:40:18,923 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:40:18,924 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:40:18,925 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:40:18,926 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:40:18,926 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:40:18,927 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:40:18,928 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:40:18,928 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:40:18,929 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:40:18,929 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:40:18,930 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:40:18,930 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:40:18,931 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:40:18,931 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:40:18,932 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:40:18,933 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:40:18,933 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:40:18,934 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:40:18,934 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:40:18,935 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:40:18,935 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:40:18,936 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:40:18,936 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:40:18,937 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:40:18,937 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:40:18,938 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:40:18,938 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:40:18,939 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:40:18,939 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:40:18,940 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:40:18,940 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:40:18,940 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:40:18,941 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:40:18,941 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:40:18,941 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_fec73c17-fc47-4954-bc6f-9445be92a046/bin/uautomizer-verify-uCwYo4JHxu/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec73c17-fc47-4954-bc6f-9445be92a046/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8af2e9e80aefb6a93651d6c869df13510f679bd9566c8571973545c9393aab5 [2023-11-19 07:40:19,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:40:19,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:40:19,202 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:40:19,203 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:40:19,204 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:40:19,205 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec73c17-fc47-4954-bc6f-9445be92a046/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2023-11-19 07:40:22,662 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:40:23,050 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:40:23,052 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec73c17-fc47-4954-bc6f-9445be92a046/sv-benchmarks/c/goblint-regression/28-race_reach_73-funloop_hard_racefree.i [2023-11-19 07:40:23,081 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec73c17-fc47-4954-bc6f-9445be92a046/bin/uautomizer-verify-uCwYo4JHxu/data/3a7dd334e/fb41a6cda69a4e0ca0fbc8006b867cfd/FLAG406c1110c [2023-11-19 07:40:23,101 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec73c17-fc47-4954-bc6f-9445be92a046/bin/uautomizer-verify-uCwYo4JHxu/data/3a7dd334e/fb41a6cda69a4e0ca0fbc8006b867cfd [2023-11-19 07:40:23,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:40:23,106 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:40:23,107 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:40:23,107 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:40:23,118 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:40:23,119 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:40:23" (1/1) ... [2023-11-19 07:40:23,120 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6599b423 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:23, skipping insertion in model container [2023-11-19 07:40:23,120 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:40:23" (1/1) ... [2023-11-19 07:40:23,175 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:40:23,791 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:40:23,816 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:40:23,897 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:40:23,982 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:40:23,983 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:23 WrapperNode [2023-11-19 07:40:23,983 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:40:23,985 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:40:23,985 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:40:23,985 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:40:23,995 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:23" (1/1) ... [2023-11-19 07:40:24,019 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:23" (1/1) ... [2023-11-19 07:40:24,062 INFO L138 Inliner]: procedures = 271, calls = 42, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 283 [2023-11-19 07:40:24,063 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:40:24,064 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:40:24,064 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:40:24,064 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:40:24,076 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:23" (1/1) ... [2023-11-19 07:40:24,076 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:23" (1/1) ... [2023-11-19 07:40:24,083 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:23" (1/1) ... [2023-11-19 07:40:24,083 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:23" (1/1) ... [2023-11-19 07:40:24,101 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:23" (1/1) ... [2023-11-19 07:40:24,111 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:23" (1/1) ... [2023-11-19 07:40:24,115 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:23" (1/1) ... [2023-11-19 07:40:24,117 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:23" (1/1) ... [2023-11-19 07:40:24,123 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:40:24,124 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:40:24,125 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:40:24,125 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:40:24,126 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:23" (1/1) ... [2023-11-19 07:40:24,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:40:24,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec73c17-fc47-4954-bc6f-9445be92a046/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:24,178 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec73c17-fc47-4954-bc6f-9445be92a046/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:40:24,181 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec73c17-fc47-4954-bc6f-9445be92a046/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:40:24,211 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:40:24,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:40:24,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:40:24,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:40:24,212 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 07:40:24,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:40:24,212 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-19 07:40:24,213 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-19 07:40:24,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:40:24,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:40:24,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:40:24,215 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:40:24,379 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:40:24,382 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:40:24,884 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:40:24,898 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:40:24,905 INFO L302 CfgBuilder]: Removed 35 assume(true) statements. [2023-11-19 07:40:24,916 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:40:24 BoogieIcfgContainer [2023-11-19 07:40:24,917 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:40:24,923 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:40:24,923 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:40:24,927 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:40:24,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:40:23" (1/3) ... [2023-11-19 07:40:24,929 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@204cb8cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:40:24, skipping insertion in model container [2023-11-19 07:40:24,930 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:40:23" (2/3) ... [2023-11-19 07:40:24,930 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@204cb8cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:40:24, skipping insertion in model container [2023-11-19 07:40:24,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:40:24" (3/3) ... [2023-11-19 07:40:24,932 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_73-funloop_hard_racefree.i [2023-11-19 07:40:24,942 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:40:24,950 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:40:24,951 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-11-19 07:40:24,951 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:40:25,059 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-11-19 07:40:25,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 268 places, 313 transitions, 633 flow [2023-11-19 07:40:25,284 INFO L124 PetriNetUnfolderBase]: 78/484 cut-off events. [2023-11-19 07:40:25,284 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:40:25,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 489 conditions, 484 events. 78/484 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2418 event pairs, 0 based on Foata normal form. 0/371 useless extension candidates. Maximal degree in co-relation 268. Up to 8 conditions per place. [2023-11-19 07:40:25,297 INFO L82 GeneralOperation]: Start removeDead. Operand has 268 places, 313 transitions, 633 flow [2023-11-19 07:40:25,309 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 266 places, 310 transitions, 627 flow [2023-11-19 07:40:25,313 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:40:25,324 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 266 places, 310 transitions, 627 flow [2023-11-19 07:40:25,327 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 266 places, 310 transitions, 627 flow [2023-11-19 07:40:25,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 266 places, 310 transitions, 627 flow [2023-11-19 07:40:25,417 INFO L124 PetriNetUnfolderBase]: 77/481 cut-off events. [2023-11-19 07:40:25,417 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:40:25,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 486 conditions, 481 events. 77/481 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2401 event pairs, 0 based on Foata normal form. 0/369 useless extension candidates. Maximal degree in co-relation 268. Up to 8 conditions per place. [2023-11-19 07:40:25,473 INFO L119 LiptonReduction]: Number of co-enabled transitions 31856 [2023-11-19 07:40:31,139 INFO L134 LiptonReduction]: Checked pairs total: 51987 [2023-11-19 07:40:31,139 INFO L136 LiptonReduction]: Total number of compositions: 289 [2023-11-19 07:40:31,155 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:40:31,163 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;@2c2028cc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:40:31,164 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2023-11-19 07:40:31,166 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:40:31,166 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-19 07:40:31,166 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:40:31,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:31,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:40:31,168 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-19 07:40:31,173 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:31,173 INFO L85 PathProgramCache]: Analyzing trace with hash 39042, now seen corresponding path program 1 times [2023-11-19 07:40:31,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:31,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337198184] [2023-11-19 07:40:31,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:31,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:31,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:31,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:31,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:31,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337198184] [2023-11-19 07:40:31,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337198184] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:31,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:31,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:40:31,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520171436] [2023-11-19 07:40:31,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:31,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:31,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:31,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:31,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:31,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 602 [2023-11-19 07:40:31,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 121 transitions, 249 flow. Second operand has 3 states, 3 states have (on average 261.6666666666667) internal successors, (785), 3 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:31,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:31,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 602 [2023-11-19 07:40:31,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:32,120 INFO L124 PetriNetUnfolderBase]: 1078/2224 cut-off events. [2023-11-19 07:40:32,120 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:40:32,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4261 conditions, 2224 events. 1078/2224 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 14863 event pairs, 924 based on Foata normal form. 292/1794 useless extension candidates. Maximal degree in co-relation 4145. Up to 2031 conditions per place. [2023-11-19 07:40:32,141 INFO L140 encePairwiseOnDemand]: 564/602 looper letters, 74 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2023-11-19 07:40:32,141 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 88 transitions, 335 flow [2023-11-19 07:40:32,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:32,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:40:32,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 896 transitions. [2023-11-19 07:40:32,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49612403100775193 [2023-11-19 07:40:32,169 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 896 transitions. [2023-11-19 07:40:32,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 896 transitions. [2023-11-19 07:40:32,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:32,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 896 transitions. [2023-11-19 07:40:32,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 298.6666666666667) internal successors, (896), 3 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:32,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 602.0) internal successors, (2408), 4 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:32,200 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 602.0) internal successors, (2408), 4 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:32,203 INFO L175 Difference]: Start difference. First operand has 85 places, 121 transitions, 249 flow. Second operand 3 states and 896 transitions. [2023-11-19 07:40:32,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 88 transitions, 335 flow [2023-11-19 07:40:32,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 88 transitions, 335 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:40:32,214 INFO L231 Difference]: Finished difference. Result has 87 places, 88 transitions, 195 flow [2023-11-19 07:40:32,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=195, PETRI_PLACES=87, PETRI_TRANSITIONS=88} [2023-11-19 07:40:32,222 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 2 predicate places. [2023-11-19 07:40:32,223 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 88 transitions, 195 flow [2023-11-19 07:40:32,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 261.6666666666667) internal successors, (785), 3 states have internal predecessors, (785), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:32,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:32,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:40:32,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:40:32,225 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-19 07:40:32,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:32,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1213570, now seen corresponding path program 1 times [2023-11-19 07:40:32,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:32,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108434133] [2023-11-19 07:40:32,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:32,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:32,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:32,338 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:32,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:32,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108434133] [2023-11-19 07:40:32,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108434133] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:40:32,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341310670] [2023-11-19 07:40:32,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:32,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:32,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec73c17-fc47-4954-bc6f-9445be92a046/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:32,342 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec73c17-fc47-4954-bc6f-9445be92a046/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:40:32,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec73c17-fc47-4954-bc6f-9445be92a046/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:40:32,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:32,466 INFO L262 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:40:32,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:32,531 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:32,531 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:40:32,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341310670] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:32,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:40:32,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-11-19 07:40:32,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815741776] [2023-11-19 07:40:32,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:32,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:40:32,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:32,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:40:32,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:40:32,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 602 [2023-11-19 07:40:32,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 88 transitions, 195 flow. Second operand has 4 states, 4 states have (on average 261.75) internal successors, (1047), 4 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:32,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:32,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 602 [2023-11-19 07:40:32,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:32,966 INFO L124 PetriNetUnfolderBase]: 1078/2223 cut-off events. [2023-11-19 07:40:32,967 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:40:32,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4266 conditions, 2223 events. 1078/2223 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 14840 event pairs, 924 based on Foata normal form. 0/1502 useless extension candidates. Maximal degree in co-relation 4254. Up to 2028 conditions per place. [2023-11-19 07:40:32,985 INFO L140 encePairwiseOnDemand]: 598/602 looper letters, 72 selfloop transitions, 3 changer transitions 0/87 dead transitions. [2023-11-19 07:40:32,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 87 transitions, 341 flow [2023-11-19 07:40:32,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:40:32,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:40:32,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1120 transitions. [2023-11-19 07:40:32,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46511627906976744 [2023-11-19 07:40:32,991 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1120 transitions. [2023-11-19 07:40:32,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1120 transitions. [2023-11-19 07:40:32,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:32,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1120 transitions. [2023-11-19 07:40:32,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 280.0) internal successors, (1120), 4 states have internal predecessors, (1120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:33,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 602.0) internal successors, (3010), 5 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:33,005 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 602.0) internal successors, (3010), 5 states have internal predecessors, (3010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:33,006 INFO L175 Difference]: Start difference. First operand has 87 places, 88 transitions, 195 flow. Second operand 4 states and 1120 transitions. [2023-11-19 07:40:33,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 87 transitions, 341 flow [2023-11-19 07:40:33,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 87 transitions, 337 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 07:40:33,010 INFO L231 Difference]: Finished difference. Result has 88 places, 87 transitions, 193 flow [2023-11-19 07:40:33,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=187, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=193, PETRI_PLACES=88, PETRI_TRANSITIONS=87} [2023-11-19 07:40:33,011 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 3 predicate places. [2023-11-19 07:40:33,011 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 87 transitions, 193 flow [2023-11-19 07:40:33,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 261.75) internal successors, (1047), 4 states have internal predecessors, (1047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:33,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:33,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:40:33,037 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec73c17-fc47-4954-bc6f-9445be92a046/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-19 07:40:33,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec73c17-fc47-4954-bc6f-9445be92a046/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:33,233 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-19 07:40:33,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:33,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1796526255, now seen corresponding path program 1 times [2023-11-19 07:40:33,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:33,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757210466] [2023-11-19 07:40:33,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:33,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:33,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:33,335 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:33,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:33,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757210466] [2023-11-19 07:40:33,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [757210466] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:40:33,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376028683] [2023-11-19 07:40:33,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:33,336 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:33,336 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec73c17-fc47-4954-bc6f-9445be92a046/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:33,338 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec73c17-fc47-4954-bc6f-9445be92a046/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:40:33,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec73c17-fc47-4954-bc6f-9445be92a046/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:40:33,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:33,430 INFO L262 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:40:33,432 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:33,443 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:33,443 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:40:33,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:33,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376028683] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:40:33,468 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:40:33,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-19 07:40:33,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066829384] [2023-11-19 07:40:33,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:40:33,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:40:33,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:33,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:40:33,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:40:33,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 602 [2023-11-19 07:40:33,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 87 transitions, 193 flow. Second operand has 7 states, 7 states have (on average 261.57142857142856) internal successors, (1831), 7 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:33,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:33,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 602 [2023-11-19 07:40:33,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:33,918 INFO L124 PetriNetUnfolderBase]: 1078/2226 cut-off events. [2023-11-19 07:40:33,918 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-11-19 07:40:33,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4276 conditions, 2226 events. 1078/2226 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 14860 event pairs, 924 based on Foata normal form. 3/1509 useless extension candidates. Maximal degree in co-relation 4248. Up to 2030 conditions per place. [2023-11-19 07:40:33,936 INFO L140 encePairwiseOnDemand]: 599/602 looper letters, 73 selfloop transitions, 5 changer transitions 0/90 dead transitions. [2023-11-19 07:40:33,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 90 transitions, 361 flow [2023-11-19 07:40:33,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:40:33,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:40:33,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1641 transitions. [2023-11-19 07:40:33,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4543189368770764 [2023-11-19 07:40:33,943 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1641 transitions. [2023-11-19 07:40:33,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1641 transitions. [2023-11-19 07:40:33,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:33,945 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1641 transitions. [2023-11-19 07:40:33,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 273.5) internal successors, (1641), 6 states have internal predecessors, (1641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:33,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 602.0) internal successors, (4214), 7 states have internal predecessors, (4214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:33,962 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 602.0) internal successors, (4214), 7 states have internal predecessors, (4214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:33,962 INFO L175 Difference]: Start difference. First operand has 88 places, 87 transitions, 193 flow. Second operand 6 states and 1641 transitions. [2023-11-19 07:40:33,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 90 transitions, 361 flow [2023-11-19 07:40:33,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 90 transitions, 357 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:40:33,967 INFO L231 Difference]: Finished difference. Result has 94 places, 90 transitions, 225 flow [2023-11-19 07:40:33,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=225, PETRI_PLACES=94, PETRI_TRANSITIONS=90} [2023-11-19 07:40:33,968 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 9 predicate places. [2023-11-19 07:40:33,968 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 90 transitions, 225 flow [2023-11-19 07:40:33,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 261.57142857142856) internal successors, (1831), 7 states have internal predecessors, (1831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:33,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:33,971 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-11-19 07:40:33,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec73c17-fc47-4954-bc6f-9445be92a046/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:34,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec73c17-fc47-4954-bc6f-9445be92a046/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:34,186 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-19 07:40:34,186 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:34,186 INFO L85 PathProgramCache]: Analyzing trace with hash 1082342575, now seen corresponding path program 2 times [2023-11-19 07:40:34,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:34,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693096975] [2023-11-19 07:40:34,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:34,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:34,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:34,258 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 07:40:34,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:34,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693096975] [2023-11-19 07:40:34,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693096975] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:34,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:34,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:40:34,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688899943] [2023-11-19 07:40:34,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:34,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:34,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:34,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:34,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:34,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 261 out of 602 [2023-11-19 07:40:34,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 90 transitions, 225 flow. Second operand has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:34,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:34,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 261 of 602 [2023-11-19 07:40:34,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:34,662 INFO L124 PetriNetUnfolderBase]: 1033/2118 cut-off events. [2023-11-19 07:40:34,663 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-11-19 07:40:34,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4052 conditions, 2118 events. 1033/2118 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 14255 event pairs, 410 based on Foata normal form. 0/1480 useless extension candidates. Maximal degree in co-relation 4017. Up to 1880 conditions per place. [2023-11-19 07:40:34,680 INFO L140 encePairwiseOnDemand]: 597/602 looper letters, 97 selfloop transitions, 2 changer transitions 0/111 dead transitions. [2023-11-19 07:40:34,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 111 transitions, 465 flow [2023-11-19 07:40:34,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:34,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:40:34,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 881 transitions. [2023-11-19 07:40:34,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48781838316722037 [2023-11-19 07:40:34,685 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 881 transitions. [2023-11-19 07:40:34,685 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 881 transitions. [2023-11-19 07:40:34,686 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:34,686 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 881 transitions. [2023-11-19 07:40:34,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 293.6666666666667) internal successors, (881), 3 states have internal predecessors, (881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:34,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 602.0) internal successors, (2408), 4 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:34,696 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 602.0) internal successors, (2408), 4 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:34,696 INFO L175 Difference]: Start difference. First operand has 94 places, 90 transitions, 225 flow. Second operand 3 states and 881 transitions. [2023-11-19 07:40:34,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 111 transitions, 465 flow [2023-11-19 07:40:34,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 111 transitions, 451 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-11-19 07:40:34,702 INFO L231 Difference]: Finished difference. Result has 94 places, 88 transitions, 215 flow [2023-11-19 07:40:34,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=215, PETRI_PLACES=94, PETRI_TRANSITIONS=88} [2023-11-19 07:40:34,704 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 9 predicate places. [2023-11-19 07:40:34,704 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 88 transitions, 215 flow [2023-11-19 07:40:34,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 263.0) internal successors, (789), 3 states have internal predecessors, (789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:34,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:34,706 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1] [2023-11-19 07:40:34,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 07:40:34,706 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-19 07:40:34,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:34,707 INFO L85 PathProgramCache]: Analyzing trace with hash 749205798, now seen corresponding path program 1 times [2023-11-19 07:40:34,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:34,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217454018] [2023-11-19 07:40:34,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:34,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:34,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:34,808 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:40:34,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:34,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217454018] [2023-11-19 07:40:34,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217454018] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:40:34,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570610001] [2023-11-19 07:40:34,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:34,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:34,810 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec73c17-fc47-4954-bc6f-9445be92a046/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:34,811 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec73c17-fc47-4954-bc6f-9445be92a046/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:40:34,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec73c17-fc47-4954-bc6f-9445be92a046/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:40:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:34,910 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:40:34,911 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:34,931 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:40:34,932 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:40:35,001 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:40:35,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570610001] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:40:35,002 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:40:35,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-19 07:40:35,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354226275] [2023-11-19 07:40:35,003 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:40:35,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-19 07:40:35,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:35,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-19 07:40:35,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-19 07:40:35,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 260 out of 602 [2023-11-19 07:40:35,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 88 transitions, 215 flow. Second operand has 13 states, 13 states have (on average 261.3076923076923) internal successors, (3397), 13 states have internal predecessors, (3397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:35,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:35,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 260 of 602 [2023-11-19 07:40:35,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:35,449 INFO L124 PetriNetUnfolderBase]: 1033/2096 cut-off events. [2023-11-19 07:40:35,450 INFO L125 PetriNetUnfolderBase]: For 155/155 co-relation queries the response was YES. [2023-11-19 07:40:35,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4110 conditions, 2096 events. 1033/2096 cut-off events. For 155/155 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 13592 event pairs, 882 based on Foata normal form. 6/1478 useless extension candidates. Maximal degree in co-relation 4056. Up to 1901 conditions per place. [2023-11-19 07:40:35,468 INFO L140 encePairwiseOnDemand]: 599/602 looper letters, 71 selfloop transitions, 11 changer transitions 0/94 dead transitions. [2023-11-19 07:40:35,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 94 transitions, 415 flow [2023-11-19 07:40:35,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:40:35,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 07:40:35,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3208 transitions. [2023-11-19 07:40:35,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4440753045404208 [2023-11-19 07:40:35,481 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3208 transitions. [2023-11-19 07:40:35,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3208 transitions. [2023-11-19 07:40:35,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:35,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3208 transitions. [2023-11-19 07:40:35,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 267.3333333333333) internal successors, (3208), 12 states have internal predecessors, (3208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:35,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 602.0) internal successors, (7826), 13 states have internal predecessors, (7826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:35,511 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 602.0) internal successors, (7826), 13 states have internal predecessors, (7826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:35,511 INFO L175 Difference]: Start difference. First operand has 94 places, 88 transitions, 215 flow. Second operand 12 states and 3208 transitions. [2023-11-19 07:40:35,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 94 transitions, 415 flow [2023-11-19 07:40:35,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 94 transitions, 411 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:40:35,516 INFO L231 Difference]: Finished difference. Result has 109 places, 94 transitions, 295 flow [2023-11-19 07:40:35,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=602, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=295, PETRI_PLACES=109, PETRI_TRANSITIONS=94} [2023-11-19 07:40:35,517 INFO L281 CegarLoopForPetriNet]: 85 programPoint places, 24 predicate places. [2023-11-19 07:40:35,517 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 94 transitions, 295 flow [2023-11-19 07:40:35,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 261.3076923076923) internal successors, (3397), 13 states have internal predecessors, (3397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:35,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:35,520 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1] [2023-11-19 07:40:35,546 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec73c17-fc47-4954-bc6f-9445be92a046/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:40:35,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec73c17-fc47-4954-bc6f-9445be92a046/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:35,741 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 26 more)] === [2023-11-19 07:40:35,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:35,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1033861414, now seen corresponding path program 2 times [2023-11-19 07:40:35,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:35,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34514359] [2023-11-19 07:40:35,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:35,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:35,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:40:35,798 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 07:40:35,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 07:40:35,859 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-19 07:40:35,860 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 07:40:35,861 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (28 of 29 remaining) [2023-11-19 07:40:35,864 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 29 remaining) [2023-11-19 07:40:35,864 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 29 remaining) [2023-11-19 07:40:35,864 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 29 remaining) [2023-11-19 07:40:35,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 29 remaining) [2023-11-19 07:40:35,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 29 remaining) [2023-11-19 07:40:35,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 29 remaining) [2023-11-19 07:40:35,865 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 29 remaining) [2023-11-19 07:40:35,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 29 remaining) [2023-11-19 07:40:35,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 29 remaining) [2023-11-19 07:40:35,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 29 remaining) [2023-11-19 07:40:35,866 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 29 remaining) [2023-11-19 07:40:35,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 29 remaining) [2023-11-19 07:40:35,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 29 remaining) [2023-11-19 07:40:35,867 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 29 remaining) [2023-11-19 07:40:35,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 29 remaining) [2023-11-19 07:40:35,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 29 remaining) [2023-11-19 07:40:35,869 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 29 remaining) [2023-11-19 07:40:35,872 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 29 remaining) [2023-11-19 07:40:35,874 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 29 remaining) [2023-11-19 07:40:35,874 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 29 remaining) [2023-11-19 07:40:35,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 29 remaining) [2023-11-19 07:40:35,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 29 remaining) [2023-11-19 07:40:35,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 29 remaining) [2023-11-19 07:40:35,875 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 29 remaining) [2023-11-19 07:40:35,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 29 remaining) [2023-11-19 07:40:35,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 29 remaining) [2023-11-19 07:40:35,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 29 remaining) [2023-11-19 07:40:35,876 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 29 remaining) [2023-11-19 07:40:35,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:40:35,877 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2023-11-19 07:40:35,880 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 07:40:35,880 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 07:40:35,958 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:40:35,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 344 places, 403 transitions, 822 flow [2023-11-19 07:40:36,145 INFO L124 PetriNetUnfolderBase]: 126/783 cut-off events. [2023-11-19 07:40:36,145 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:40:36,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 795 conditions, 783 events. 126/783 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4360 event pairs, 0 based on Foata normal form. 0/599 useless extension candidates. Maximal degree in co-relation 486. Up to 12 conditions per place. [2023-11-19 07:40:36,160 INFO L82 GeneralOperation]: Start removeDead. Operand has 344 places, 403 transitions, 822 flow [2023-11-19 07:40:36,180 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 344 places, 403 transitions, 822 flow [2023-11-19 07:40:36,181 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:40:36,181 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 344 places, 403 transitions, 822 flow [2023-11-19 07:40:36,182 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 344 places, 403 transitions, 822 flow [2023-11-19 07:40:36,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 344 places, 403 transitions, 822 flow [2023-11-19 07:40:36,326 INFO L124 PetriNetUnfolderBase]: 126/783 cut-off events. [2023-11-19 07:40:36,326 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:40:36,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 795 conditions, 783 events. 126/783 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4360 event pairs, 0 based on Foata normal form. 0/599 useless extension candidates. Maximal degree in co-relation 486. Up to 12 conditions per place. [2023-11-19 07:40:36,389 INFO L119 LiptonReduction]: Number of co-enabled transitions 82544 [2023-11-19 07:40:42,143 INFO L134 LiptonReduction]: Checked pairs total: 147170 [2023-11-19 07:40:42,143 INFO L136 LiptonReduction]: Total number of compositions: 358 [2023-11-19 07:40:42,148 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:40:42,152 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;@2c2028cc, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:40:42,153 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2023-11-19 07:40:42,154 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:40:42,154 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-19 07:40:42,155 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:40:42,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:42,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-19 07:40:42,155 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-19 07:40:42,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:42,156 INFO L85 PathProgramCache]: Analyzing trace with hash 66191, now seen corresponding path program 1 times [2023-11-19 07:40:42,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:42,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143277924] [2023-11-19 07:40:42,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:42,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:42,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:42,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:42,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:42,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143277924] [2023-11-19 07:40:42,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143277924] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:42,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:42,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:40:42,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577737784] [2023-11-19 07:40:42,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:42,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:42,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:42,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:42,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:42,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 761 [2023-11-19 07:40:42,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 163 transitions, 342 flow. Second operand has 3 states, 3 states have (on average 335.6666666666667) internal successors, (1007), 3 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:42,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:42,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 761 [2023-11-19 07:40:42,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:50,412 INFO L124 PetriNetUnfolderBase]: 53493/80817 cut-off events. [2023-11-19 07:40:50,412 INFO L125 PetriNetUnfolderBase]: For 186/186 co-relation queries the response was YES. [2023-11-19 07:40:50,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158145 conditions, 80817 events. 53493/80817 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 2669. Compared 627252 event pairs, 48250 based on Foata normal form. 9459/62749 useless extension candidates. Maximal degree in co-relation 74498. Up to 77201 conditions per place. [2023-11-19 07:40:51,249 INFO L140 encePairwiseOnDemand]: 712/761 looper letters, 102 selfloop transitions, 2 changer transitions 0/119 dead transitions. [2023-11-19 07:40:51,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 119 transitions, 462 flow [2023-11-19 07:40:51,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:51,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:40:51,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1157 transitions. [2023-11-19 07:40:51,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5067893123083662 [2023-11-19 07:40:51,255 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1157 transitions. [2023-11-19 07:40:51,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1157 transitions. [2023-11-19 07:40:51,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:51,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1157 transitions. [2023-11-19 07:40:51,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 385.6666666666667) internal successors, (1157), 3 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:51,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:51,269 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:51,269 INFO L175 Difference]: Start difference. First operand has 114 places, 163 transitions, 342 flow. Second operand 3 states and 1157 transitions. [2023-11-19 07:40:51,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 119 transitions, 462 flow [2023-11-19 07:40:51,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 119 transitions, 462 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-19 07:40:51,274 INFO L231 Difference]: Finished difference. Result has 116 places, 119 transitions, 266 flow [2023-11-19 07:40:51,274 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=116, PETRI_TRANSITIONS=119} [2023-11-19 07:40:51,276 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 2 predicate places. [2023-11-19 07:40:51,276 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 119 transitions, 266 flow [2023-11-19 07:40:51,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 335.6666666666667) internal successors, (1007), 3 states have internal predecessors, (1007), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:51,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:51,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-19 07:40:51,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:40:51,278 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-19 07:40:51,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:51,278 INFO L85 PathProgramCache]: Analyzing trace with hash 2056174, now seen corresponding path program 1 times [2023-11-19 07:40:51,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:51,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630105403] [2023-11-19 07:40:51,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:51,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:51,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:51,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:51,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:51,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630105403] [2023-11-19 07:40:51,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630105403] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:40:51,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:40:51,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:40:51,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633477086] [2023-11-19 07:40:51,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:40:51,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:40:51,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:51,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:40:51,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:40:51,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 761 [2023-11-19 07:40:51,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 119 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 336.0) internal successors, (1008), 3 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:51,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:51,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 761 [2023-11-19 07:40:51,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:40:58,221 INFO L124 PetriNetUnfolderBase]: 53493/80816 cut-off events. [2023-11-19 07:40:58,221 INFO L125 PetriNetUnfolderBase]: For 186/186 co-relation queries the response was YES. [2023-11-19 07:40:58,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158150 conditions, 80816 events. 53493/80816 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 2669. Compared 627123 event pairs, 48250 based on Foata normal form. 0/53290 useless extension candidates. Maximal degree in co-relation 158137. Up to 77198 conditions per place. [2023-11-19 07:40:58,682 INFO L140 encePairwiseOnDemand]: 758/761 looper letters, 101 selfloop transitions, 2 changer transitions 0/118 dead transitions. [2023-11-19 07:40:58,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 118 transitions, 468 flow [2023-11-19 07:40:58,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:40:58,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:40:58,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1108 transitions. [2023-11-19 07:40:58,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4853263250109505 [2023-11-19 07:40:58,687 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1108 transitions. [2023-11-19 07:40:58,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1108 transitions. [2023-11-19 07:40:58,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:40:58,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1108 transitions. [2023-11-19 07:40:58,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 369.3333333333333) internal successors, (1108), 3 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:58,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:58,698 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:58,698 INFO L175 Difference]: Start difference. First operand has 116 places, 119 transitions, 266 flow. Second operand 3 states and 1108 transitions. [2023-11-19 07:40:58,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 118 transitions, 468 flow [2023-11-19 07:40:58,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 118 transitions, 464 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-19 07:40:58,703 INFO L231 Difference]: Finished difference. Result has 116 places, 118 transitions, 262 flow [2023-11-19 07:40:58,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=116, PETRI_TRANSITIONS=118} [2023-11-19 07:40:58,705 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 2 predicate places. [2023-11-19 07:40:58,706 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 118 transitions, 262 flow [2023-11-19 07:40:58,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 336.0) internal successors, (1008), 3 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:58,706 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:40:58,707 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:40:58,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 07:40:58,707 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-19 07:40:58,707 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:40:58,708 INFO L85 PathProgramCache]: Analyzing trace with hash 667682679, now seen corresponding path program 1 times [2023-11-19 07:40:58,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:40:58,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397802022] [2023-11-19 07:40:58,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:58,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:40:58,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:58,779 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:58,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:40:58,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397802022] [2023-11-19 07:40:58,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397802022] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:40:58,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1538561983] [2023-11-19 07:40:58,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:40:58,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:40:58,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec73c17-fc47-4954-bc6f-9445be92a046/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:40:58,783 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec73c17-fc47-4954-bc6f-9445be92a046/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:40:58,801 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec73c17-fc47-4954-bc6f-9445be92a046/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:40:58,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:40:58,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:40:58,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:40:58,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:58,884 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:40:58,902 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:40:58,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1538561983] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:40:58,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:40:58,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-19 07:40:58,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035129115] [2023-11-19 07:40:58,905 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:40:58,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-19 07:40:58,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:40:58,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-19 07:40:58,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:40:58,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 334 out of 761 [2023-11-19 07:40:58,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 118 transitions, 262 flow. Second operand has 7 states, 7 states have (on average 335.57142857142856) internal successors, (2349), 7 states have internal predecessors, (2349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:40:58,948 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:40:58,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 334 of 761 [2023-11-19 07:40:58,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:41:06,242 INFO L124 PetriNetUnfolderBase]: 53493/80819 cut-off events. [2023-11-19 07:41:06,243 INFO L125 PetriNetUnfolderBase]: For 187/187 co-relation queries the response was YES. [2023-11-19 07:41:06,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158159 conditions, 80819 events. 53493/80819 cut-off events. For 187/187 co-relation queries the response was YES. Maximal size of possible extension queue 2668. Compared 627101 event pairs, 48250 based on Foata normal form. 3/53297 useless extension candidates. Maximal degree in co-relation 158131. Up to 77200 conditions per place. [2023-11-19 07:41:06,693 INFO L140 encePairwiseOnDemand]: 758/761 looper letters, 101 selfloop transitions, 5 changer transitions 0/121 dead transitions. [2023-11-19 07:41:06,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 121 transitions, 486 flow [2023-11-19 07:41:06,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:41:06,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:41:06,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2113 transitions. [2023-11-19 07:41:06,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4627682873412177 [2023-11-19 07:41:06,704 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2113 transitions. [2023-11-19 07:41:06,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2113 transitions. [2023-11-19 07:41:06,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:41:06,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2113 transitions. [2023-11-19 07:41:06,714 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 352.1666666666667) internal successors, (2113), 6 states have internal predecessors, (2113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:06,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 761.0) internal successors, (5327), 7 states have internal predecessors, (5327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:06,727 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 761.0) internal successors, (5327), 7 states have internal predecessors, (5327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:06,727 INFO L175 Difference]: Start difference. First operand has 116 places, 118 transitions, 262 flow. Second operand 6 states and 2113 transitions. [2023-11-19 07:41:06,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 121 transitions, 486 flow [2023-11-19 07:41:06,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 121 transitions, 482 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:41:06,732 INFO L231 Difference]: Finished difference. Result has 122 places, 121 transitions, 294 flow [2023-11-19 07:41:06,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=258, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=294, PETRI_PLACES=122, PETRI_TRANSITIONS=121} [2023-11-19 07:41:06,733 INFO L281 CegarLoopForPetriNet]: 114 programPoint places, 8 predicate places. [2023-11-19 07:41:06,733 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 121 transitions, 294 flow [2023-11-19 07:41:06,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 335.57142857142856) internal successors, (2349), 7 states have internal predecessors, (2349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:06,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:41:06,735 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-11-19 07:41:06,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec73c17-fc47-4954-bc6f-9445be92a046/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:41:06,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fec73c17-fc47-4954-bc6f-9445be92a046/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-19 07:41:06,950 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-11-19 07:41:06,950 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:41:06,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1311805096, now seen corresponding path program 2 times [2023-11-19 07:41:06,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:41:06,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187513615] [2023-11-19 07:41:06,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:41:06,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:41:06,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:41:07,020 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-19 07:41:07,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:41:07,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187513615] [2023-11-19 07:41:07,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187513615] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:41:07,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:41:07,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:41:07,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572554996] [2023-11-19 07:41:07,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:41:07,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:41:07,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:41:07,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:41:07,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:41:07,036 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 761 [2023-11-19 07:41:07,037 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 121 transitions, 294 flow. Second operand has 3 states, 3 states have (on average 337.0) internal successors, (1011), 3 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:41:07,037 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:41:07,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 761 [2023-11-19 07:41:07,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand