./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/fib_unsafe-6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/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_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/fib_unsafe-6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/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_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/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 854e371c98b43d805c328b457758892c4a501d7b326c2672c089850792494a4b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:46:41,835 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:46:41,909 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-19 07:46:41,915 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:46:41,916 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:46:41,944 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:46:41,945 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:46:41,945 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:46:41,946 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:46:41,947 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:46:41,948 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:46:41,948 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:46:41,949 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:46:41,950 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:46:41,950 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:46:41,951 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:46:41,952 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:46:41,952 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:46:41,953 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:46:41,953 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:46:41,954 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:46:41,955 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:46:41,956 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-19 07:46:41,956 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 07:46:41,960 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:46:41,960 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:46:41,961 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:46:41,961 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:46:41,962 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:46:41,962 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:46:41,963 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:46:41,963 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:46:41,964 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:46:41,964 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:46:41,976 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:46:41,976 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:46:41,977 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:46:41,978 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:46:41,978 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:46:41,979 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:46:41,979 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:46:41,980 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_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 854e371c98b43d805c328b457758892c4a501d7b326c2672c089850792494a4b [2023-11-19 07:46:42,245 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:46:42,279 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:46:42,283 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:46:42,284 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:46:42,285 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:46:42,286 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/pthread/fib_unsafe-6.i [2023-11-19 07:46:45,459 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:46:45,842 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:46:45,843 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/sv-benchmarks/c/pthread/fib_unsafe-6.i [2023-11-19 07:46:45,863 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/data/51225fb63/aa99503d79ed4949982c06a6f4b96598/FLAG461236fbe [2023-11-19 07:46:45,888 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/data/51225fb63/aa99503d79ed4949982c06a6f4b96598 [2023-11-19 07:46:45,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:46:45,899 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:46:45,903 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:46:45,903 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:46:45,909 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:46:45,913 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:46:45" (1/1) ... [2023-11-19 07:46:45,914 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39c1acfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:45, skipping insertion in model container [2023-11-19 07:46:45,914 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:46:45" (1/1) ... [2023-11-19 07:46:45,962 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:46:46,380 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:46:46,394 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:46:46,474 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:46:46,513 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:46:46,513 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-19 07:46:46,521 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:46:46,522 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:46 WrapperNode [2023-11-19 07:46:46,522 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:46:46,523 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:46:46,524 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:46:46,525 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:46:46,533 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:46" (1/1) ... [2023-11-19 07:46:46,572 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:46" (1/1) ... [2023-11-19 07:46:46,602 INFO L138 Inliner]: procedures = 165, calls = 29, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 82 [2023-11-19 07:46:46,602 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:46:46,603 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:46:46,603 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:46:46,603 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:46:46,614 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:46" (1/1) ... [2023-11-19 07:46:46,614 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:46" (1/1) ... [2023-11-19 07:46:46,617 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:46" (1/1) ... [2023-11-19 07:46:46,618 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:46" (1/1) ... [2023-11-19 07:46:46,624 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:46" (1/1) ... [2023-11-19 07:46:46,628 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:46" (1/1) ... [2023-11-19 07:46:46,631 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:46" (1/1) ... [2023-11-19 07:46:46,632 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:46" (1/1) ... [2023-11-19 07:46:46,636 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:46:46,637 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:46:46,637 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:46:46,637 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:46:46,638 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:46" (1/1) ... [2023-11-19 07:46:46,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:46:46,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:46,683 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:46:46,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:46:46,739 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-11-19 07:46:46,739 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-11-19 07:46:46,739 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-11-19 07:46:46,739 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-11-19 07:46:46,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:46:46,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-19 07:46:46,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:46:46,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:46:46,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:46:46,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:46:46,741 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-19 07:46:46,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:46:46,742 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:46:46,744 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 07:46:46,881 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:46:46,884 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:46:47,134 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:46:47,183 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:46:47,191 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-11-19 07:46:47,195 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:46:47 BoogieIcfgContainer [2023-11-19 07:46:47,196 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:46:47,198 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:46:47,198 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:46:47,202 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:46:47,202 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:46:45" (1/3) ... [2023-11-19 07:46:47,208 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a42cf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:46:47, skipping insertion in model container [2023-11-19 07:46:47,208 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:46:46" (2/3) ... [2023-11-19 07:46:47,208 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52a42cf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:46:47, skipping insertion in model container [2023-11-19 07:46:47,209 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:46:47" (3/3) ... [2023-11-19 07:46:47,210 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_unsafe-6.i [2023-11-19 07:46:47,218 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:46:47,227 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:46:47,227 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-19 07:46:47,227 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:46:47,307 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 07:46:47,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 121 transitions, 250 flow [2023-11-19 07:46:47,427 INFO L124 PetriNetUnfolderBase]: 8/119 cut-off events. [2023-11-19 07:46:47,427 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:46:47,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 119 events. 8/119 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 167 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2023-11-19 07:46:47,436 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 121 transitions, 250 flow [2023-11-19 07:46:47,442 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 118 places, 119 transitions, 244 flow [2023-11-19 07:46:47,446 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:46:47,458 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 118 places, 119 transitions, 244 flow [2023-11-19 07:46:47,461 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 118 places, 119 transitions, 244 flow [2023-11-19 07:46:47,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 119 transitions, 244 flow [2023-11-19 07:46:47,557 INFO L124 PetriNetUnfolderBase]: 8/119 cut-off events. [2023-11-19 07:46:47,566 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:46:47,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 119 events. 8/119 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 169 event pairs, 0 based on Foata normal form. 0/99 useless extension candidates. Maximal degree in co-relation 94. Up to 2 conditions per place. [2023-11-19 07:46:47,572 INFO L119 LiptonReduction]: Number of co-enabled transitions 4318 [2023-11-19 07:46:51,973 INFO L134 LiptonReduction]: Checked pairs total: 3754 [2023-11-19 07:46:51,974 INFO L136 LiptonReduction]: Total number of compositions: 123 [2023-11-19 07:46:51,991 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:46:52,006 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;@79f24bd0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:46:52,007 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-11-19 07:46:52,011 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:46:52,013 INFO L124 PetriNetUnfolderBase]: 1/5 cut-off events. [2023-11-19 07:46:52,013 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 07:46:52,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:52,014 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-11-19 07:46:52,015 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-19 07:46:52,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:52,023 INFO L85 PathProgramCache]: Analyzing trace with hash 14719801, now seen corresponding path program 1 times [2023-11-19 07:46:52,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:52,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185129830] [2023-11-19 07:46:52,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:52,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:52,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:52,361 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 07:46:52,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:52,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185129830] [2023-11-19 07:46:52,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185129830] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:52,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:52,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:46:52,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398308967] [2023-11-19 07:46:52,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:52,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:46:52,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:52,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:46:52,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:52,451 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 244 [2023-11-19 07:46:52,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 25 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states 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 07:46:52,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:52,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 244 [2023-11-19 07:46:52,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:52,648 INFO L124 PetriNetUnfolderBase]: 583/864 cut-off events. [2023-11-19 07:46:52,648 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-19 07:46:52,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1750 conditions, 864 events. 583/864 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3533 event pairs, 92 based on Foata normal form. 0/316 useless extension candidates. Maximal degree in co-relation 1740. Up to 727 conditions per place. [2023-11-19 07:46:52,660 INFO L140 encePairwiseOnDemand]: 232/244 looper letters, 33 selfloop transitions, 5 changer transitions 0/38 dead transitions. [2023-11-19 07:46:52,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 38 transitions, 161 flow [2023-11-19 07:46:52,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:46:52,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:46:52,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 363 transitions. [2023-11-19 07:46:52,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4959016393442623 [2023-11-19 07:46:52,685 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 363 transitions. [2023-11-19 07:46:52,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 363 transitions. [2023-11-19 07:46:52,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:52,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 363 transitions. [2023-11-19 07:46:52,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states 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 07:46:52,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 0 states have call successors, (0), 0 states 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 07:46:52,708 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 0 states have call successors, (0), 0 states 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 07:46:52,711 INFO L175 Difference]: Start difference. First operand has 29 places, 25 transitions, 56 flow. Second operand 3 states and 363 transitions. [2023-11-19 07:46:52,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 38 transitions, 161 flow [2023-11-19 07:46:52,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 38 transitions, 158 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:46:52,718 INFO L231 Difference]: Finished difference. Result has 27 places, 26 transitions, 87 flow [2023-11-19 07:46:52,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=87, PETRI_PLACES=27, PETRI_TRANSITIONS=26} [2023-11-19 07:46:52,727 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -2 predicate places. [2023-11-19 07:46:52,727 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 26 transitions, 87 flow [2023-11-19 07:46:52,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states 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 07:46:52,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:52,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:46:52,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 07:46:52,729 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-19 07:46:52,731 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:52,731 INFO L85 PathProgramCache]: Analyzing trace with hash 456315909, now seen corresponding path program 1 times [2023-11-19 07:46:52,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:52,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458075856] [2023-11-19 07:46:52,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:52,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:52,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:52,874 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 07:46:52,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:52,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458075856] [2023-11-19 07:46:52,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458075856] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:52,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:52,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:46:52,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559313733] [2023-11-19 07:46:52,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:52,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:46:52,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:52,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:46:52,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:52,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 244 [2023-11-19 07:46:52,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 26 transitions, 87 flow. Second operand has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states 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 07:46:52,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:52,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 244 [2023-11-19 07:46:52,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:53,034 INFO L124 PetriNetUnfolderBase]: 489/732 cut-off events. [2023-11-19 07:46:53,034 INFO L125 PetriNetUnfolderBase]: For 65/65 co-relation queries the response was YES. [2023-11-19 07:46:53,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1831 conditions, 732 events. 489/732 cut-off events. For 65/65 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 2783 event pairs, 317 based on Foata normal form. 0/396 useless extension candidates. Maximal degree in co-relation 1820. Up to 732 conditions per place. [2023-11-19 07:46:53,043 INFO L140 encePairwiseOnDemand]: 242/244 looper letters, 23 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2023-11-19 07:46:53,043 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 24 transitions, 126 flow [2023-11-19 07:46:53,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:46:53,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:46:53,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 331 transitions. [2023-11-19 07:46:53,047 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4521857923497268 [2023-11-19 07:46:53,047 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 331 transitions. [2023-11-19 07:46:53,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 331 transitions. [2023-11-19 07:46:53,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:53,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 331 transitions. [2023-11-19 07:46:53,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states 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 07:46:53,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 0 states have call successors, (0), 0 states 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 07:46:53,053 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 0 states have call successors, (0), 0 states 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 07:46:53,053 INFO L175 Difference]: Start difference. First operand has 27 places, 26 transitions, 87 flow. Second operand 3 states and 331 transitions. [2023-11-19 07:46:53,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 24 transitions, 126 flow [2023-11-19 07:46:53,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 24 transitions, 122 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:46:53,055 INFO L231 Difference]: Finished difference. Result has 27 places, 24 transitions, 76 flow [2023-11-19 07:46:53,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=27, PETRI_TRANSITIONS=24} [2023-11-19 07:46:53,056 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -2 predicate places. [2023-11-19 07:46:53,057 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 24 transitions, 76 flow [2023-11-19 07:46:53,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states 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 07:46:53,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:53,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:46:53,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 07:46:53,058 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-19 07:46:53,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:53,059 INFO L85 PathProgramCache]: Analyzing trace with hash 456315855, now seen corresponding path program 1 times [2023-11-19 07:46:53,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:53,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732730637] [2023-11-19 07:46:53,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:53,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:53,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:53,163 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 07:46:53,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:53,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732730637] [2023-11-19 07:46:53,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732730637] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:46:53,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736298328] [2023-11-19 07:46:53,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:53,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:53,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:53,166 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:53,207 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:46:53,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:53,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:46:53,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:53,347 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 07:46:53,347 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:46:53,378 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 07:46:53,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736298328] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:46:53,379 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:46:53,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2023-11-19 07:46:53,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389908752] [2023-11-19 07:46:53,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:46:53,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:46:53,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:53,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:46:53,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:46:53,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 244 [2023-11-19 07:46:53,411 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 24 transitions, 76 flow. Second operand has 8 states, 8 states have (on average 104.875) internal successors, (839), 8 states have internal predecessors, (839), 0 states have call successors, (0), 0 states 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 07:46:53,411 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:53,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 244 [2023-11-19 07:46:53,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:53,808 INFO L124 PetriNetUnfolderBase]: 1089/1636 cut-off events. [2023-11-19 07:46:53,808 INFO L125 PetriNetUnfolderBase]: For 55/55 co-relation queries the response was YES. [2023-11-19 07:46:53,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3972 conditions, 1636 events. 1089/1636 cut-off events. For 55/55 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7614 event pairs, 92 based on Foata normal form. 0/892 useless extension candidates. Maximal degree in co-relation 3964. Up to 663 conditions per place. [2023-11-19 07:46:53,824 INFO L140 encePairwiseOnDemand]: 236/244 looper letters, 82 selfloop transitions, 20 changer transitions 0/102 dead transitions. [2023-11-19 07:46:53,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 102 transitions, 486 flow [2023-11-19 07:46:53,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:46:53,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:46:53,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 831 transitions. [2023-11-19 07:46:53,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48653395784543324 [2023-11-19 07:46:53,829 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 831 transitions. [2023-11-19 07:46:53,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 831 transitions. [2023-11-19 07:46:53,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:53,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 831 transitions. [2023-11-19 07:46:53,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 118.71428571428571) internal successors, (831), 7 states have internal predecessors, (831), 0 states have call successors, (0), 0 states 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 07:46:53,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 244.0) internal successors, (1952), 8 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states 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 07:46:53,839 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 244.0) internal successors, (1952), 8 states have internal predecessors, (1952), 0 states have call successors, (0), 0 states 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 07:46:53,839 INFO L175 Difference]: Start difference. First operand has 27 places, 24 transitions, 76 flow. Second operand 7 states and 831 transitions. [2023-11-19 07:46:53,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 102 transitions, 486 flow [2023-11-19 07:46:53,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 102 transitions, 485 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:46:53,843 INFO L231 Difference]: Finished difference. Result has 37 places, 40 transitions, 245 flow [2023-11-19 07:46:53,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=245, PETRI_PLACES=37, PETRI_TRANSITIONS=40} [2023-11-19 07:46:53,844 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 8 predicate places. [2023-11-19 07:46:53,845 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 40 transitions, 245 flow [2023-11-19 07:46:53,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 104.875) internal successors, (839), 8 states have internal predecessors, (839), 0 states have call successors, (0), 0 states 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 07:46:53,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:53,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 07:46:53,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:54,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:54,060 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-19 07:46:54,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:54,060 INFO L85 PathProgramCache]: Analyzing trace with hash 456315854, now seen corresponding path program 1 times [2023-11-19 07:46:54,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:54,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820171161] [2023-11-19 07:46:54,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:54,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:54,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:54,178 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 07:46:54,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:54,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820171161] [2023-11-19 07:46:54,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820171161] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:46:54,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013088453] [2023-11-19 07:46:54,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:54,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:54,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:54,180 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:54,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:46:54,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:54,268 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:46:54,269 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:54,325 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 07:46:54,325 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:46:54,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013088453] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:54,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:46:54,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2023-11-19 07:46:54,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115713509] [2023-11-19 07:46:54,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:54,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:46:54,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:54,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:46:54,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:46:54,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 244 [2023-11-19 07:46:54,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 40 transitions, 245 flow. Second operand has 4 states, 4 states have (on average 105.25) internal successors, (421), 4 states have internal predecessors, (421), 0 states have call successors, (0), 0 states 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 07:46:54,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:54,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 244 [2023-11-19 07:46:54,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:54,588 INFO L124 PetriNetUnfolderBase]: 895/1334 cut-off events. [2023-11-19 07:46:54,589 INFO L125 PetriNetUnfolderBase]: For 1241/1241 co-relation queries the response was YES. [2023-11-19 07:46:54,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4164 conditions, 1334 events. 895/1334 cut-off events. For 1241/1241 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 5851 event pairs, 301 based on Foata normal form. 236/1180 useless extension candidates. Maximal degree in co-relation 4150. Up to 690 conditions per place. [2023-11-19 07:46:54,603 INFO L140 encePairwiseOnDemand]: 238/244 looper letters, 38 selfloop transitions, 12 changer transitions 0/50 dead transitions. [2023-11-19 07:46:54,604 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 50 transitions, 363 flow [2023-11-19 07:46:54,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:46:54,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:46:54,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 455 transitions. [2023-11-19 07:46:54,607 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4661885245901639 [2023-11-19 07:46:54,607 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 455 transitions. [2023-11-19 07:46:54,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 455 transitions. [2023-11-19 07:46:54,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:54,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 455 transitions. [2023-11-19 07:46:54,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 113.75) internal successors, (455), 4 states have internal predecessors, (455), 0 states have call successors, (0), 0 states 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 07:46:54,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 244.0) internal successors, (1220), 5 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states 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 07:46:54,616 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 244.0) internal successors, (1220), 5 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states 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 07:46:54,616 INFO L175 Difference]: Start difference. First operand has 37 places, 40 transitions, 245 flow. Second operand 4 states and 455 transitions. [2023-11-19 07:46:54,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 50 transitions, 363 flow [2023-11-19 07:46:54,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 50 transitions, 319 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-11-19 07:46:54,639 INFO L231 Difference]: Finished difference. Result has 36 places, 37 transitions, 234 flow [2023-11-19 07:46:54,639 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=234, PETRI_PLACES=36, PETRI_TRANSITIONS=37} [2023-11-19 07:46:54,641 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 7 predicate places. [2023-11-19 07:46:54,646 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 37 transitions, 234 flow [2023-11-19 07:46:54,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.25) internal successors, (421), 4 states have internal predecessors, (421), 0 states have call successors, (0), 0 states 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 07:46:54,648 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:54,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:46:54,670 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:54,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:54,864 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-19 07:46:54,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:54,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1262758087, now seen corresponding path program 1 times [2023-11-19 07:46:54,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:54,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033614914] [2023-11-19 07:46:54,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:54,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:54,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:54,942 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 07:46:54,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:54,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033614914] [2023-11-19 07:46:54,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033614914] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:54,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:54,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:46:54,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904303495] [2023-11-19 07:46:54,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:54,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:46:54,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:54,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:46:54,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:54,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 244 [2023-11-19 07:46:54,955 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 37 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states 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 07:46:54,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:54,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 244 [2023-11-19 07:46:54,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:55,254 INFO L124 PetriNetUnfolderBase]: 1330/1976 cut-off events. [2023-11-19 07:46:55,255 INFO L125 PetriNetUnfolderBase]: For 3120/3120 co-relation queries the response was YES. [2023-11-19 07:46:55,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6439 conditions, 1976 events. 1330/1976 cut-off events. For 3120/3120 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 9249 event pairs, 366 based on Foata normal form. 0/1391 useless extension candidates. Maximal degree in co-relation 6424. Up to 1140 conditions per place. [2023-11-19 07:46:55,279 INFO L140 encePairwiseOnDemand]: 240/244 looper letters, 65 selfloop transitions, 2 changer transitions 0/67 dead transitions. [2023-11-19 07:46:55,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 67 transitions, 577 flow [2023-11-19 07:46:55,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:46:55,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:46:55,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 342 transitions. [2023-11-19 07:46:55,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4672131147540984 [2023-11-19 07:46:55,282 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 342 transitions. [2023-11-19 07:46:55,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 342 transitions. [2023-11-19 07:46:55,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:55,283 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 342 transitions. [2023-11-19 07:46:55,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states 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 07:46:55,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 0 states have call successors, (0), 0 states 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 07:46:55,288 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 0 states have call successors, (0), 0 states 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 07:46:55,289 INFO L175 Difference]: Start difference. First operand has 36 places, 37 transitions, 234 flow. Second operand 3 states and 342 transitions. [2023-11-19 07:46:55,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 67 transitions, 577 flow [2023-11-19 07:46:55,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 67 transitions, 576 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:46:55,299 INFO L231 Difference]: Finished difference. Result has 38 places, 38 transitions, 247 flow [2023-11-19 07:46:55,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=247, PETRI_PLACES=38, PETRI_TRANSITIONS=38} [2023-11-19 07:46:55,302 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 9 predicate places. [2023-11-19 07:46:55,302 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 38 transitions, 247 flow [2023-11-19 07:46:55,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states 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 07:46:55,307 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:55,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:46:55,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 07:46:55,309 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-19 07:46:55,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:55,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1262757990, now seen corresponding path program 1 times [2023-11-19 07:46:55,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:55,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631170134] [2023-11-19 07:46:55,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:55,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:55,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:55,400 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 07:46:55,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:55,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631170134] [2023-11-19 07:46:55,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631170134] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:55,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:55,402 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 07:46:55,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902575360] [2023-11-19 07:46:55,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:55,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:46:55,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:55,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:46:55,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:55,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 244 [2023-11-19 07:46:55,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 38 transitions, 247 flow. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states 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 07:46:55,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:55,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 244 [2023-11-19 07:46:55,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:55,673 INFO L124 PetriNetUnfolderBase]: 1040/1548 cut-off events. [2023-11-19 07:46:55,673 INFO L125 PetriNetUnfolderBase]: For 2704/2704 co-relation queries the response was YES. [2023-11-19 07:46:55,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5394 conditions, 1548 events. 1040/1548 cut-off events. For 2704/2704 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 6904 event pairs, 160 based on Foata normal form. 69/1277 useless extension candidates. Maximal degree in co-relation 5377. Up to 1140 conditions per place. [2023-11-19 07:46:55,692 INFO L140 encePairwiseOnDemand]: 240/244 looper letters, 63 selfloop transitions, 2 changer transitions 0/65 dead transitions. [2023-11-19 07:46:55,692 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 65 transitions, 580 flow [2023-11-19 07:46:55,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:46:55,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:46:55,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 340 transitions. [2023-11-19 07:46:55,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4644808743169399 [2023-11-19 07:46:55,695 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 340 transitions. [2023-11-19 07:46:55,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 340 transitions. [2023-11-19 07:46:55,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:55,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 340 transitions. [2023-11-19 07:46:55,698 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states 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 07:46:55,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 0 states have call successors, (0), 0 states 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 07:46:55,700 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 0 states have call successors, (0), 0 states 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 07:46:55,701 INFO L175 Difference]: Start difference. First operand has 38 places, 38 transitions, 247 flow. Second operand 3 states and 340 transitions. [2023-11-19 07:46:55,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 65 transitions, 580 flow [2023-11-19 07:46:55,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 65 transitions, 578 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:46:55,708 INFO L231 Difference]: Finished difference. Result has 40 places, 38 transitions, 255 flow [2023-11-19 07:46:55,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=255, PETRI_PLACES=40, PETRI_TRANSITIONS=38} [2023-11-19 07:46:55,711 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 11 predicate places. [2023-11-19 07:46:55,711 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 38 transitions, 255 flow [2023-11-19 07:46:55,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states 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 07:46:55,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:55,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 07:46:55,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 07:46:55,712 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-19 07:46:55,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:55,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1262755622, now seen corresponding path program 1 times [2023-11-19 07:46:55,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:55,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877952754] [2023-11-19 07:46:55,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:55,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:55,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:55,771 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 07:46:55,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:55,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877952754] [2023-11-19 07:46:55,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877952754] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:55,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:46:55,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 07:46:55,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932530587] [2023-11-19 07:46:55,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:55,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 07:46:55,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:55,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 07:46:55,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 07:46:55,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 244 [2023-11-19 07:46:55,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 255 flow. Second operand has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states 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 07:46:55,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:55,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 244 [2023-11-19 07:46:55,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:56,002 INFO L124 PetriNetUnfolderBase]: 970/1450 cut-off events. [2023-11-19 07:46:56,002 INFO L125 PetriNetUnfolderBase]: For 2218/2218 co-relation queries the response was YES. [2023-11-19 07:46:56,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5452 conditions, 1450 events. 970/1450 cut-off events. For 2218/2218 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 6069 event pairs, 339 based on Foata normal form. 84/1255 useless extension candidates. Maximal degree in co-relation 5433. Up to 918 conditions per place. [2023-11-19 07:46:56,020 INFO L140 encePairwiseOnDemand]: 240/244 looper letters, 44 selfloop transitions, 6 changer transitions 0/50 dead transitions. [2023-11-19 07:46:56,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 50 transitions, 415 flow [2023-11-19 07:46:56,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 07:46:56,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-19 07:46:56,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 342 transitions. [2023-11-19 07:46:56,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4672131147540984 [2023-11-19 07:46:56,023 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 342 transitions. [2023-11-19 07:46:56,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 342 transitions. [2023-11-19 07:46:56,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:56,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 342 transitions. [2023-11-19 07:46:56,025 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states 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 07:46:56,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 0 states have call successors, (0), 0 states 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 07:46:56,027 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 0 states have call successors, (0), 0 states 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 07:46:56,028 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 255 flow. Second operand 3 states and 342 transitions. [2023-11-19 07:46:56,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 50 transitions, 415 flow [2023-11-19 07:46:56,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 50 transitions, 409 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:46:56,034 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 273 flow [2023-11-19 07:46:56,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=273, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-11-19 07:46:56,035 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 12 predicate places. [2023-11-19 07:46:56,035 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 273 flow [2023-11-19 07:46:56,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 105.0) internal successors, (315), 3 states have internal predecessors, (315), 0 states have call successors, (0), 0 states 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 07:46:56,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:56,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:56,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 07:46:56,036 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-19 07:46:56,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:56,037 INFO L85 PathProgramCache]: Analyzing trace with hash 490795439, now seen corresponding path program 1 times [2023-11-19 07:46:56,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:56,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726493863] [2023-11-19 07:46:56,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:56,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:56,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:56,175 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 07:46:56,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:56,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726493863] [2023-11-19 07:46:56,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726493863] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:46:56,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165173830] [2023-11-19 07:46:56,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:56,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:56,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:56,178 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:56,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:46:56,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:56,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:46:56,264 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:56,319 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 07:46:56,319 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:46:56,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165173830] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:56,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:46:56,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2023-11-19 07:46:56,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745797010] [2023-11-19 07:46:56,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:56,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:46:56,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:56,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:46:56,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:46:56,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 244 [2023-11-19 07:46:56,352 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 273 flow. Second operand has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states 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 07:46:56,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:56,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 244 [2023-11-19 07:46:56,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:56,566 INFO L124 PetriNetUnfolderBase]: 835/1250 cut-off events. [2023-11-19 07:46:56,566 INFO L125 PetriNetUnfolderBase]: For 3083/3083 co-relation queries the response was YES. [2023-11-19 07:46:56,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4920 conditions, 1250 events. 835/1250 cut-off events. For 3083/3083 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 5364 event pairs, 154 based on Foata normal form. 0/1048 useless extension candidates. Maximal degree in co-relation 4900. Up to 865 conditions per place. [2023-11-19 07:46:56,582 INFO L140 encePairwiseOnDemand]: 241/244 looper letters, 60 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2023-11-19 07:46:56,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 62 transitions, 615 flow [2023-11-19 07:46:56,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:46:56,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:46:56,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 441 transitions. [2023-11-19 07:46:56,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45184426229508196 [2023-11-19 07:46:56,585 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 441 transitions. [2023-11-19 07:46:56,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 441 transitions. [2023-11-19 07:46:56,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:56,586 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 441 transitions. [2023-11-19 07:46:56,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 110.25) internal successors, (441), 4 states have internal predecessors, (441), 0 states have call successors, (0), 0 states 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 07:46:56,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 244.0) internal successors, (1220), 5 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states 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 07:46:56,590 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 244.0) internal successors, (1220), 5 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states 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 07:46:56,591 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 273 flow. Second operand 4 states and 441 transitions. [2023-11-19 07:46:56,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 62 transitions, 615 flow [2023-11-19 07:46:56,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 62 transitions, 604 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:46:56,596 INFO L231 Difference]: Finished difference. Result has 42 places, 36 transitions, 267 flow [2023-11-19 07:46:56,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=263, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=267, PETRI_PLACES=42, PETRI_TRANSITIONS=36} [2023-11-19 07:46:56,600 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 13 predicate places. [2023-11-19 07:46:56,601 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 36 transitions, 267 flow [2023-11-19 07:46:56,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states 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 07:46:56,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:56,602 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:56,624 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:56,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-19 07:46:56,816 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-19 07:46:56,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:56,816 INFO L85 PathProgramCache]: Analyzing trace with hash 490795510, now seen corresponding path program 1 times [2023-11-19 07:46:56,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:56,817 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797101574] [2023-11-19 07:46:56,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:56,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:56,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:56,906 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 07:46:56,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:56,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797101574] [2023-11-19 07:46:56,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797101574] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:46:56,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756315992] [2023-11-19 07:46:56,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:56,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:56,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:56,908 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:56,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:46:56,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:56,991 INFO L262 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:46:56,992 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:57,039 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 07:46:57,040 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:46:57,086 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 07:46:57,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756315992] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:46:57,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:46:57,087 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2023-11-19 07:46:57,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692802634] [2023-11-19 07:46:57,087 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:46:57,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:46:57,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:57,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:46:57,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-11-19 07:46:57,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 244 [2023-11-19 07:46:57,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 36 transitions, 267 flow. Second operand has 8 states, 8 states have (on average 102.625) internal successors, (821), 8 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:57,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:57,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 244 [2023-11-19 07:46:57,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:57,604 INFO L124 PetriNetUnfolderBase]: 1980/2915 cut-off events. [2023-11-19 07:46:57,604 INFO L125 PetriNetUnfolderBase]: For 7982/7982 co-relation queries the response was YES. [2023-11-19 07:46:57,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11333 conditions, 2915 events. 1980/2915 cut-off events. For 7982/7982 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 13676 event pairs, 154 based on Foata normal form. 195/2422 useless extension candidates. Maximal degree in co-relation 11312. Up to 931 conditions per place. [2023-11-19 07:46:57,640 INFO L140 encePairwiseOnDemand]: 240/244 looper letters, 141 selfloop transitions, 8 changer transitions 0/149 dead transitions. [2023-11-19 07:46:57,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 149 transitions, 1469 flow [2023-11-19 07:46:57,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:46:57,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:46:57,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 667 transitions. [2023-11-19 07:46:57,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45560109289617484 [2023-11-19 07:46:57,644 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 667 transitions. [2023-11-19 07:46:57,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 667 transitions. [2023-11-19 07:46:57,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:57,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 667 transitions. [2023-11-19 07:46:57,647 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 111.16666666666667) internal successors, (667), 6 states have internal predecessors, (667), 0 states have call successors, (0), 0 states 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 07:46:57,649 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 244.0) internal successors, (1708), 7 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states 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 07:46:57,650 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 244.0) internal successors, (1708), 7 states have internal predecessors, (1708), 0 states have call successors, (0), 0 states 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 07:46:57,650 INFO L175 Difference]: Start difference. First operand has 42 places, 36 transitions, 267 flow. Second operand 6 states and 667 transitions. [2023-11-19 07:46:57,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 149 transitions, 1469 flow [2023-11-19 07:46:57,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 149 transitions, 1466 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:46:57,663 INFO L231 Difference]: Finished difference. Result has 48 places, 42 transitions, 325 flow [2023-11-19 07:46:57,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=325, PETRI_PLACES=48, PETRI_TRANSITIONS=42} [2023-11-19 07:46:57,665 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 19 predicate places. [2023-11-19 07:46:57,665 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 42 transitions, 325 flow [2023-11-19 07:46:57,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 102.625) internal successors, (821), 8 states have internal predecessors, (821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:46:57,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:57,666 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:57,687 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:57,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:57,880 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-19 07:46:57,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:57,880 INFO L85 PathProgramCache]: Analyzing trace with hash 490795536, now seen corresponding path program 1 times [2023-11-19 07:46:57,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:57,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694401187] [2023-11-19 07:46:57,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:57,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:57,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:57,928 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 07:46:57,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:57,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694401187] [2023-11-19 07:46:57,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694401187] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:46:57,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1627678643] [2023-11-19 07:46:57,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:57,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:57,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:57,931 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:57,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:46:58,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:58,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:46:58,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:58,033 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 07:46:58,033 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:46:58,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1627678643] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:58,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:46:58,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-11-19 07:46:58,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069181537] [2023-11-19 07:46:58,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:58,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:46:58,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:58,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:46:58,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:46:58,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 244 [2023-11-19 07:46:58,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 42 transitions, 325 flow. Second operand has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states 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 07:46:58,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:58,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 244 [2023-11-19 07:46:58,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:58,392 INFO L124 PetriNetUnfolderBase]: 1510/2250 cut-off events. [2023-11-19 07:46:58,392 INFO L125 PetriNetUnfolderBase]: For 6574/6574 co-relation queries the response was YES. [2023-11-19 07:46:58,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9522 conditions, 2250 events. 1510/2250 cut-off events. For 6574/6574 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 10348 event pairs, 154 based on Foata normal form. 0/2118 useless extension candidates. Maximal degree in co-relation 9498. Up to 1865 conditions per place. [2023-11-19 07:46:58,421 INFO L140 encePairwiseOnDemand]: 241/244 looper letters, 62 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2023-11-19 07:46:58,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 64 transitions, 641 flow [2023-11-19 07:46:58,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:46:58,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:46:58,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 440 transitions. [2023-11-19 07:46:58,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45081967213114754 [2023-11-19 07:46:58,424 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 440 transitions. [2023-11-19 07:46:58,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 440 transitions. [2023-11-19 07:46:58,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:58,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 440 transitions. [2023-11-19 07:46:58,426 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 110.0) internal successors, (440), 4 states have internal predecessors, (440), 0 states have call successors, (0), 0 states 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 07:46:58,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 244.0) internal successors, (1220), 5 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states 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 07:46:58,429 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 244.0) internal successors, (1220), 5 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states 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 07:46:58,429 INFO L175 Difference]: Start difference. First operand has 48 places, 42 transitions, 325 flow. Second operand 4 states and 440 transitions. [2023-11-19 07:46:58,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 64 transitions, 641 flow [2023-11-19 07:46:58,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 64 transitions, 639 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:46:58,446 INFO L231 Difference]: Finished difference. Result has 49 places, 38 transitions, 298 flow [2023-11-19 07:46:58,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=294, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=298, PETRI_PLACES=49, PETRI_TRANSITIONS=38} [2023-11-19 07:46:58,448 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 20 predicate places. [2023-11-19 07:46:58,448 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 38 transitions, 298 flow [2023-11-19 07:46:58,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states 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 07:46:58,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:58,449 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-19 07:46:58,475 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:58,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-19 07:46:58,665 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-19 07:46:58,665 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:58,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1967576442, now seen corresponding path program 1 times [2023-11-19 07:46:58,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:58,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [575299372] [2023-11-19 07:46:58,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:58,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:58,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:58,736 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:58,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:58,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [575299372] [2023-11-19 07:46:58,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [575299372] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:46:58,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060314127] [2023-11-19 07:46:58,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:58,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:58,737 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:58,738 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:58,768 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:46:58,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:58,850 INFO L262 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:46:58,852 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:58,868 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:58,869 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:46:58,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060314127] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:46:58,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:46:58,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-11-19 07:46:58,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871405183] [2023-11-19 07:46:58,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:46:58,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:46:58,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:46:58,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:46:58,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:46:58,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 244 [2023-11-19 07:46:58,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 38 transitions, 298 flow. Second operand has 5 states, 5 states have (on average 104.6) internal successors, (523), 5 states have internal predecessors, (523), 0 states have call successors, (0), 0 states 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 07:46:58,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:46:58,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 244 [2023-11-19 07:46:58,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:46:59,320 INFO L124 PetriNetUnfolderBase]: 1631/2426 cut-off events. [2023-11-19 07:46:59,321 INFO L125 PetriNetUnfolderBase]: For 6896/6896 co-relation queries the response was YES. [2023-11-19 07:46:59,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10313 conditions, 2426 events. 1631/2426 cut-off events. For 6896/6896 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 11044 event pairs, 513 based on Foata normal form. 0/2426 useless extension candidates. Maximal degree in co-relation 10288. Up to 1045 conditions per place. [2023-11-19 07:46:59,350 INFO L140 encePairwiseOnDemand]: 240/244 looper letters, 56 selfloop transitions, 11 changer transitions 0/67 dead transitions. [2023-11-19 07:46:59,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 67 transitions, 622 flow [2023-11-19 07:46:59,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:46:59,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:46:59,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 554 transitions. [2023-11-19 07:46:59,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4540983606557377 [2023-11-19 07:46:59,355 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 554 transitions. [2023-11-19 07:46:59,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 554 transitions. [2023-11-19 07:46:59,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:46:59,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 554 transitions. [2023-11-19 07:46:59,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.8) internal successors, (554), 5 states have internal predecessors, (554), 0 states have call successors, (0), 0 states 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 07:46:59,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states 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 07:46:59,363 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 0 states have call successors, (0), 0 states 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 07:46:59,363 INFO L175 Difference]: Start difference. First operand has 49 places, 38 transitions, 298 flow. Second operand 5 states and 554 transitions. [2023-11-19 07:46:59,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 67 transitions, 622 flow [2023-11-19 07:46:59,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 67 transitions, 617 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-19 07:46:59,377 INFO L231 Difference]: Finished difference. Result has 51 places, 37 transitions, 319 flow [2023-11-19 07:46:59,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=257, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=319, PETRI_PLACES=51, PETRI_TRANSITIONS=37} [2023-11-19 07:46:59,378 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 22 predicate places. [2023-11-19 07:46:59,378 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 37 transitions, 319 flow [2023-11-19 07:46:59,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 104.6) internal successors, (523), 5 states have internal predecessors, (523), 0 states have call successors, (0), 0 states 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 07:46:59,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:46:59,379 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-11-19 07:46:59,412 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:46:59,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:59,596 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-19 07:46:59,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:46:59,596 INFO L85 PathProgramCache]: Analyzing trace with hash 536154297, now seen corresponding path program 2 times [2023-11-19 07:46:59,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:46:59,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785478090] [2023-11-19 07:46:59,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:46:59,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:46:59,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:46:59,737 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:59,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:46:59,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785478090] [2023-11-19 07:46:59,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785478090] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:46:59,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [126704350] [2023-11-19 07:46:59,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:46:59,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:46:59,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:46:59,740 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:46:59,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:46:59,834 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:46:59,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:46:59,835 INFO L262 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:46:59,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:46:59,940 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:46:59,941 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:00,085 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:00,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [126704350] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:00,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:47:00,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-11-19 07:47:00,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401282013] [2023-11-19 07:47:00,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:00,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-19 07:47:00,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:00,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-19 07:47:00,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:47:00,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 244 [2023-11-19 07:47:00,158 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 37 transitions, 319 flow. Second operand has 17 states, 17 states have (on average 104.41176470588235) internal successors, (1775), 17 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states 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 07:47:00,158 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:00,158 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 244 [2023-11-19 07:47:00,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:01,062 INFO L124 PetriNetUnfolderBase]: 2623/3926 cut-off events. [2023-11-19 07:47:01,062 INFO L125 PetriNetUnfolderBase]: For 16558/16558 co-relation queries the response was YES. [2023-11-19 07:47:01,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17796 conditions, 3926 events. 2623/3926 cut-off events. For 16558/16558 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 18914 event pairs, 219 based on Foata normal form. 496/4422 useless extension candidates. Maximal degree in co-relation 17770. Up to 1786 conditions per place. [2023-11-19 07:47:01,104 INFO L140 encePairwiseOnDemand]: 239/244 looper letters, 152 selfloop transitions, 31 changer transitions 0/183 dead transitions. [2023-11-19 07:47:01,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 183 transitions, 1588 flow [2023-11-19 07:47:01,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:47:01,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 07:47:01,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1371 transitions. [2023-11-19 07:47:01,110 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4682377049180328 [2023-11-19 07:47:01,110 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1371 transitions. [2023-11-19 07:47:01,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1371 transitions. [2023-11-19 07:47:01,111 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:01,111 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1371 transitions. [2023-11-19 07:47:01,115 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 114.25) internal successors, (1371), 12 states have internal predecessors, (1371), 0 states have call successors, (0), 0 states 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 07:47:01,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 244.0) internal successors, (3172), 13 states have internal predecessors, (3172), 0 states have call successors, (0), 0 states 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 07:47:01,123 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 244.0) internal successors, (3172), 13 states have internal predecessors, (3172), 0 states have call successors, (0), 0 states 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 07:47:01,123 INFO L175 Difference]: Start difference. First operand has 51 places, 37 transitions, 319 flow. Second operand 12 states and 1371 transitions. [2023-11-19 07:47:01,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 183 transitions, 1588 flow [2023-11-19 07:47:01,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 183 transitions, 1551 flow, removed 12 selfloop flow, removed 2 redundant places. [2023-11-19 07:47:01,147 INFO L231 Difference]: Finished difference. Result has 66 places, 56 transitions, 648 flow [2023-11-19 07:47:01,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=648, PETRI_PLACES=66, PETRI_TRANSITIONS=56} [2023-11-19 07:47:01,148 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 37 predicate places. [2023-11-19 07:47:01,148 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 56 transitions, 648 flow [2023-11-19 07:47:01,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 104.41176470588235) internal successors, (1775), 17 states have internal predecessors, (1775), 0 states have call successors, (0), 0 states 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 07:47:01,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:01,150 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:01,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:01,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:01,371 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-19 07:47:01,371 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:01,371 INFO L85 PathProgramCache]: Analyzing trace with hash -1967576482, now seen corresponding path program 1 times [2023-11-19 07:47:01,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:01,371 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750212049] [2023-11-19 07:47:01,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:01,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:01,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:01,443 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:01,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:01,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750212049] [2023-11-19 07:47:01,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750212049] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:01,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882419115] [2023-11-19 07:47:01,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:01,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:01,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:01,446 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:01,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-19 07:47:01,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:01,528 INFO L262 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:47:01,529 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:01,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:01,578 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:01,619 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:01,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882419115] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:01,620 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:47:01,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2023-11-19 07:47:01,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785282640] [2023-11-19 07:47:01,620 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:01,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-19 07:47:01,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:01,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-19 07:47:01,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2023-11-19 07:47:01,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 244 [2023-11-19 07:47:01,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 56 transitions, 648 flow. Second operand has 11 states, 11 states have (on average 105.18181818181819) internal successors, (1157), 11 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 07:47:01,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:01,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 244 [2023-11-19 07:47:01,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:02,724 INFO L124 PetriNetUnfolderBase]: 3415/5114 cut-off events. [2023-11-19 07:47:02,724 INFO L125 PetriNetUnfolderBase]: For 33646/33646 co-relation queries the response was YES. [2023-11-19 07:47:02,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26357 conditions, 5114 events. 3415/5114 cut-off events. For 33646/33646 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 26729 event pairs, 274 based on Foata normal form. 264/5378 useless extension candidates. Maximal degree in co-relation 26325. Up to 3566 conditions per place. [2023-11-19 07:47:02,802 INFO L140 encePairwiseOnDemand]: 239/244 looper letters, 122 selfloop transitions, 21 changer transitions 0/143 dead transitions. [2023-11-19 07:47:02,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 143 transitions, 1500 flow [2023-11-19 07:47:02,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:47:02,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:47:02,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 907 transitions. [2023-11-19 07:47:02,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4646516393442623 [2023-11-19 07:47:02,807 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 907 transitions. [2023-11-19 07:47:02,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 907 transitions. [2023-11-19 07:47:02,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:02,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 907 transitions. [2023-11-19 07:47:02,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 113.375) internal successors, (907), 8 states have internal predecessors, (907), 0 states have call successors, (0), 0 states 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 07:47:02,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 244.0) internal successors, (2196), 9 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states 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 07:47:02,816 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 244.0) internal successors, (2196), 9 states have internal predecessors, (2196), 0 states have call successors, (0), 0 states 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 07:47:02,817 INFO L175 Difference]: Start difference. First operand has 66 places, 56 transitions, 648 flow. Second operand 8 states and 907 transitions. [2023-11-19 07:47:02,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 143 transitions, 1500 flow [2023-11-19 07:47:02,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 143 transitions, 1424 flow, removed 35 selfloop flow, removed 2 redundant places. [2023-11-19 07:47:02,916 INFO L231 Difference]: Finished difference. Result has 75 places, 70 transitions, 832 flow [2023-11-19 07:47:02,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=832, PETRI_PLACES=75, PETRI_TRANSITIONS=70} [2023-11-19 07:47:02,918 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 46 predicate places. [2023-11-19 07:47:02,918 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 70 transitions, 832 flow [2023-11-19 07:47:02,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 105.18181818181819) internal successors, (1157), 11 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 07:47:02,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:02,919 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:02,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:03,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-19 07:47:03,140 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-19 07:47:03,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:03,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1221636845, now seen corresponding path program 2 times [2023-11-19 07:47:03,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:03,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971374109] [2023-11-19 07:47:03,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:03,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:03,333 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:03,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:03,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971374109] [2023-11-19 07:47:03,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971374109] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:03,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624066908] [2023-11-19 07:47:03,334 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:47:03,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:03,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:03,336 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:03,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-19 07:47:03,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:47:03,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:47:03,509 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 15 conjunts are in the unsatisfiable core [2023-11-19 07:47:03,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:03,601 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:03,601 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:03,686 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:03,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [624066908] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:03,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:47:03,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-11-19 07:47:03,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41610959] [2023-11-19 07:47:03,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:03,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-19 07:47:03,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:03,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-19 07:47:03,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:47:03,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 244 [2023-11-19 07:47:03,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 70 transitions, 832 flow. Second operand has 17 states, 17 states have (on average 100.76470588235294) internal successors, (1713), 17 states have internal predecessors, (1713), 0 states have call successors, (0), 0 states 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 07:47:03,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:03,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 244 [2023-11-19 07:47:03,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:05,992 INFO L124 PetriNetUnfolderBase]: 7087/10586 cut-off events. [2023-11-19 07:47:05,992 INFO L125 PetriNetUnfolderBase]: For 124460/124460 co-relation queries the response was YES. [2023-11-19 07:47:06,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56384 conditions, 10586 events. 7087/10586 cut-off events. For 124460/124460 co-relation queries the response was YES. Maximal size of possible extension queue 292. Compared 58373 event pairs, 343 based on Foata normal form. 900/11486 useless extension candidates. Maximal degree in co-relation 56347. Up to 3151 conditions per place. [2023-11-19 07:47:06,197 INFO L140 encePairwiseOnDemand]: 241/244 looper letters, 654 selfloop transitions, 11 changer transitions 0/665 dead transitions. [2023-11-19 07:47:06,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 665 transitions, 9744 flow [2023-11-19 07:47:06,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-19 07:47:06,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-19 07:47:06,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1309 transitions. [2023-11-19 07:47:06,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44706284153005466 [2023-11-19 07:47:06,204 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1309 transitions. [2023-11-19 07:47:06,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1309 transitions. [2023-11-19 07:47:06,205 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:06,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1309 transitions. [2023-11-19 07:47:06,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 109.08333333333333) internal successors, (1309), 12 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 07:47:06,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 244.0) internal successors, (3172), 13 states have internal predecessors, (3172), 0 states have call successors, (0), 0 states 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 07:47:06,219 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 244.0) internal successors, (3172), 13 states have internal predecessors, (3172), 0 states have call successors, (0), 0 states 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 07:47:06,219 INFO L175 Difference]: Start difference. First operand has 75 places, 70 transitions, 832 flow. Second operand 12 states and 1309 transitions. [2023-11-19 07:47:06,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 665 transitions, 9744 flow [2023-11-19 07:47:06,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 665 transitions, 9160 flow, removed 264 selfloop flow, removed 2 redundant places. [2023-11-19 07:47:06,489 INFO L231 Difference]: Finished difference. Result has 90 places, 76 transitions, 862 flow [2023-11-19 07:47:06,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=862, PETRI_PLACES=90, PETRI_TRANSITIONS=76} [2023-11-19 07:47:06,490 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 61 predicate places. [2023-11-19 07:47:06,491 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 76 transitions, 862 flow [2023-11-19 07:47:06,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 100.76470588235294) internal successors, (1713), 17 states have internal predecessors, (1713), 0 states have call successors, (0), 0 states 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 07:47:06,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:06,492 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:06,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:06,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:06,712 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-19 07:47:06,712 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:06,712 INFO L85 PathProgramCache]: Analyzing trace with hash -26871447, now seen corresponding path program 1 times [2023-11-19 07:47:06,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:06,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615204651] [2023-11-19 07:47:06,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:06,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:06,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:06,829 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:06,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:06,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615204651] [2023-11-19 07:47:06,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615204651] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:06,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102780795] [2023-11-19 07:47:06,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:06,831 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:06,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:06,832 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:06,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-19 07:47:06,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:06,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:47:06,922 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:07,016 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:07,016 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:07,110 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:07,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102780795] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:07,110 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:47:07,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-11-19 07:47:07,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110843337] [2023-11-19 07:47:07,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:07,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-19 07:47:07,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:07,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-19 07:47:07,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:47:07,164 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 244 [2023-11-19 07:47:07,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 76 transitions, 862 flow. Second operand has 17 states, 17 states have (on average 104.94117647058823) internal successors, (1784), 17 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states 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 07:47:07,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:07,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 244 [2023-11-19 07:47:07,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:10,750 INFO L124 PetriNetUnfolderBase]: 10457/15799 cut-off events. [2023-11-19 07:47:10,750 INFO L125 PetriNetUnfolderBase]: For 163297/163297 co-relation queries the response was YES. [2023-11-19 07:47:10,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85278 conditions, 15799 events. 10457/15799 cut-off events. For 163297/163297 co-relation queries the response was YES. Maximal size of possible extension queue 470. Compared 97678 event pairs, 482 based on Foata normal form. 727/16526 useless extension candidates. Maximal degree in co-relation 85235. Up to 5979 conditions per place. [2023-11-19 07:47:10,995 INFO L140 encePairwiseOnDemand]: 238/244 looper letters, 264 selfloop transitions, 73 changer transitions 0/337 dead transitions. [2023-11-19 07:47:10,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 337 transitions, 3841 flow [2023-11-19 07:47:10,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-19 07:47:10,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-11-19 07:47:11,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1696 transitions. [2023-11-19 07:47:11,004 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4633879781420765 [2023-11-19 07:47:11,004 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1696 transitions. [2023-11-19 07:47:11,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1696 transitions. [2023-11-19 07:47:11,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:11,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1696 transitions. [2023-11-19 07:47:11,012 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 113.06666666666666) internal successors, (1696), 15 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states 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 07:47:11,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 244.0) internal successors, (3904), 16 states have internal predecessors, (3904), 0 states have call successors, (0), 0 states 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 07:47:11,022 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 244.0) internal successors, (3904), 16 states have internal predecessors, (3904), 0 states have call successors, (0), 0 states 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 07:47:11,023 INFO L175 Difference]: Start difference. First operand has 90 places, 76 transitions, 862 flow. Second operand 15 states and 1696 transitions. [2023-11-19 07:47:11,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 337 transitions, 3841 flow [2023-11-19 07:47:11,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 337 transitions, 3553 flow, removed 91 selfloop flow, removed 5 redundant places. [2023-11-19 07:47:11,744 INFO L231 Difference]: Finished difference. Result has 106 places, 116 transitions, 1594 flow [2023-11-19 07:47:11,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=838, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1594, PETRI_PLACES=106, PETRI_TRANSITIONS=116} [2023-11-19 07:47:11,745 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 77 predicate places. [2023-11-19 07:47:11,745 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 116 transitions, 1594 flow [2023-11-19 07:47:11,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 104.94117647058823) internal successors, (1784), 17 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states 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 07:47:11,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:11,747 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:11,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:11,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:11,959 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-19 07:47:11,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:11,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1306925785, now seen corresponding path program 1 times [2023-11-19 07:47:11,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:11,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586649172] [2023-11-19 07:47:11,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:11,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:11,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:12,102 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:12,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:12,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586649172] [2023-11-19 07:47:12,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586649172] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:12,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067071391] [2023-11-19 07:47:12,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:12,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:12,104 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:12,108 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:12,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-19 07:47:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:12,201 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:47:12,203 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:12,294 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:12,295 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:12,379 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:12,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067071391] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:12,380 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:47:12,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2023-11-19 07:47:12,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638944754] [2023-11-19 07:47:12,380 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:12,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-11-19 07:47:12,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:12,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-11-19 07:47:12,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2023-11-19 07:47:12,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 244 [2023-11-19 07:47:12,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 116 transitions, 1594 flow. Second operand has 17 states, 17 states have (on average 104.94117647058823) internal successors, (1784), 17 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states 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 07:47:12,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:12,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 244 [2023-11-19 07:47:12,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:17,311 INFO L124 PetriNetUnfolderBase]: 15563/23656 cut-off events. [2023-11-19 07:47:17,311 INFO L125 PetriNetUnfolderBase]: For 334361/334361 co-relation queries the response was YES. [2023-11-19 07:47:17,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142740 conditions, 23656 events. 15563/23656 cut-off events. For 334361/334361 co-relation queries the response was YES. Maximal size of possible extension queue 707. Compared 158622 event pairs, 793 based on Foata normal form. 727/24383 useless extension candidates. Maximal degree in co-relation 142690. Up to 10323 conditions per place. [2023-11-19 07:47:17,671 INFO L140 encePairwiseOnDemand]: 238/244 looper letters, 346 selfloop transitions, 108 changer transitions 0/454 dead transitions. [2023-11-19 07:47:17,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 454 transitions, 5496 flow [2023-11-19 07:47:17,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-19 07:47:17,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-11-19 07:47:17,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2027 transitions. [2023-11-19 07:47:17,679 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4615209471766849 [2023-11-19 07:47:17,679 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2027 transitions. [2023-11-19 07:47:17,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2027 transitions. [2023-11-19 07:47:17,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:17,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2027 transitions. [2023-11-19 07:47:17,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 112.61111111111111) internal successors, (2027), 18 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states 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 07:47:17,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 244.0) internal successors, (4636), 19 states have internal predecessors, (4636), 0 states have call successors, (0), 0 states 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 07:47:17,697 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 244.0) internal successors, (4636), 19 states have internal predecessors, (4636), 0 states have call successors, (0), 0 states 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 07:47:17,697 INFO L175 Difference]: Start difference. First operand has 106 places, 116 transitions, 1594 flow. Second operand 18 states and 2027 transitions. [2023-11-19 07:47:17,698 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 454 transitions, 5496 flow [2023-11-19 07:47:21,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 454 transitions, 5190 flow, removed 144 selfloop flow, removed 6 redundant places. [2023-11-19 07:47:21,386 INFO L231 Difference]: Finished difference. Result has 124 places, 180 transitions, 2668 flow [2023-11-19 07:47:21,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=1446, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2668, PETRI_PLACES=124, PETRI_TRANSITIONS=180} [2023-11-19 07:47:21,387 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 95 predicate places. [2023-11-19 07:47:21,387 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 180 transitions, 2668 flow [2023-11-19 07:47:21,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 104.94117647058823) internal successors, (1784), 17 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states 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 07:47:21,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:47:21,388 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:47:21,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-19 07:47:21,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:21,601 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2023-11-19 07:47:21,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:47:21,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1866456294, now seen corresponding path program 2 times [2023-11-19 07:47:21,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:47:21,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869861570] [2023-11-19 07:47:21,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:47:21,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:47:21,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:47:21,764 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:21,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:47:21,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869861570] [2023-11-19 07:47:21,765 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869861570] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-19 07:47:21,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2143517575] [2023-11-19 07:47:21,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-19 07:47:21,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:47:21,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:47:21,767 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:47:21,769 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f9e70ebb-792f-4ed5-91c7-5eb8a6a2db41/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-19 07:47:21,864 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-19 07:47:21,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-19 07:47:21,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-19 07:47:21,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:47:21,978 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:21,978 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:47:22,100 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:47:22,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2143517575] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:47:22,101 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-19 07:47:22,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2023-11-19 07:47:22,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791181792] [2023-11-19 07:47:22,102 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-19 07:47:22,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-11-19 07:47:22,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:47:22,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-11-19 07:47:22,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=244, Unknown=0, NotChecked=0, Total=380 [2023-11-19 07:47:22,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 244 [2023-11-19 07:47:22,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 180 transitions, 2668 flow. Second operand has 20 states, 20 states have (on average 104.8) internal successors, (2096), 20 states have internal predecessors, (2096), 0 states have call successors, (0), 0 states 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 07:47:22,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:47:22,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 244 [2023-11-19 07:47:22,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:47:29,620 INFO L124 PetriNetUnfolderBase]: 20735/31632 cut-off events. [2023-11-19 07:47:29,621 INFO L125 PetriNetUnfolderBase]: For 593436/593436 co-relation queries the response was YES. [2023-11-19 07:47:29,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201169 conditions, 31632 events. 20735/31632 cut-off events. For 593436/593436 co-relation queries the response was YES. Maximal size of possible extension queue 985. Compared 222398 event pairs, 1269 based on Foata normal form. 944/32576 useless extension candidates. Maximal degree in co-relation 201113. Up to 12839 conditions per place. [2023-11-19 07:47:30,247 INFO L140 encePairwiseOnDemand]: 238/244 looper letters, 352 selfloop transitions, 151 changer transitions 0/503 dead transitions. [2023-11-19 07:47:30,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 503 transitions, 6572 flow [2023-11-19 07:47:30,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-19 07:47:30,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-11-19 07:47:30,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1925 transitions. [2023-11-19 07:47:30,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4640790742526519 [2023-11-19 07:47:30,255 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1925 transitions. [2023-11-19 07:47:30,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1925 transitions. [2023-11-19 07:47:30,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:47:30,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1925 transitions. [2023-11-19 07:47:30,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 113.23529411764706) internal successors, (1925), 17 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states 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 07:47:30,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 244.0) internal successors, (4392), 18 states have internal predecessors, (4392), 0 states have call successors, (0), 0 states 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 07:47:30,274 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 244.0) internal successors, (4392), 18 states have internal predecessors, (4392), 0 states have call successors, (0), 0 states 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 07:47:30,275 INFO L175 Difference]: Start difference. First operand has 124 places, 180 transitions, 2668 flow. Second operand 17 states and 1925 transitions. [2023-11-19 07:47:30,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 503 transitions, 6572 flow