./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bcf7de9-8bdb-4dc2-adcc-bcc2956e2feb/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bcf7de9-8bdb-4dc2-adcc-bcc2956e2feb/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bcf7de9-8bdb-4dc2-adcc-bcc2956e2feb/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bcf7de9-8bdb-4dc2-adcc-bcc2956e2feb/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bcf7de9-8bdb-4dc2-adcc-bcc2956e2feb/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bcf7de9-8bdb-4dc2-adcc-bcc2956e2feb/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 779f57e464f50d458e1b66270e0c9f2866c6247d4d7f63a3096c6ac13e286657 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:18:57,449 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:18:57,553 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bcf7de9-8bdb-4dc2-adcc-bcc2956e2feb/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-12 02:18:57,558 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:18:57,559 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:18:57,591 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:18:57,592 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:18:57,593 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:18:57,594 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:18:57,594 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:18:57,595 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:18:57,596 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:18:57,596 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:18:57,597 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:18:57,598 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:18:57,598 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-12 02:18:57,599 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:18:57,600 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-12 02:18:57,600 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:18:57,601 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:18:57,601 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:18:57,609 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:18:57,610 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 02:18:57,611 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:18:57,611 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-12 02:18:57,617 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:18:57,617 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:18:57,618 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:18:57,619 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:18:57,619 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:18:57,619 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:18:57,620 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:18:57,621 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:18:57,621 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:18:57,622 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:18:57,622 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:18:57,623 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:18:57,624 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:18:57,624 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:18:57,625 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:18:57,626 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:18:57,629 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_6bcf7de9-8bdb-4dc2-adcc-bcc2956e2feb/bin/uautomizer-verify-uTZkv6EMXl/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bcf7de9-8bdb-4dc2-adcc-bcc2956e2feb/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 779f57e464f50d458e1b66270e0c9f2866c6247d4d7f63a3096c6ac13e286657 [2023-11-12 02:18:57,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:18:57,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:18:57,941 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:18:57,942 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:18:57,943 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:18:57,944 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bcf7de9-8bdb-4dc2-adcc-bcc2956e2feb/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c [2023-11-12 02:19:01,171 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:19:01,449 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:19:01,450 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bcf7de9-8bdb-4dc2-adcc-bcc2956e2feb/sv-benchmarks/c/weaver/chl-array-int-subst.wvr.c [2023-11-12 02:19:01,459 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bcf7de9-8bdb-4dc2-adcc-bcc2956e2feb/bin/uautomizer-verify-uTZkv6EMXl/data/a03d9eace/5f2a1cd06b4a48058769e6d8039be33c/FLAG046d99aee [2023-11-12 02:19:01,473 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bcf7de9-8bdb-4dc2-adcc-bcc2956e2feb/bin/uautomizer-verify-uTZkv6EMXl/data/a03d9eace/5f2a1cd06b4a48058769e6d8039be33c [2023-11-12 02:19:01,476 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:19:01,478 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:19:01,479 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:19:01,480 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:19:01,486 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:19:01,487 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:19:01" (1/1) ... [2023-11-12 02:19:01,488 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ed119b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:01, skipping insertion in model container [2023-11-12 02:19:01,488 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:19:01" (1/1) ... [2023-11-12 02:19:01,548 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:19:01,760 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:19:01,776 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:19:01,819 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:19:01,835 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:19:01,835 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:01 WrapperNode [2023-11-12 02:19:01,835 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:19:01,836 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:19:01,836 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:19:01,837 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:19:01,843 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:01" (1/1) ... [2023-11-12 02:19:01,854 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:01" (1/1) ... [2023-11-12 02:19:01,894 INFO L138 Inliner]: procedures = 26, calls = 51, calls flagged for inlining = 15, calls inlined = 23, statements flattened = 354 [2023-11-12 02:19:01,894 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:19:01,895 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:19:01,895 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:19:01,896 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:19:01,907 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:01" (1/1) ... [2023-11-12 02:19:01,907 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:01" (1/1) ... [2023-11-12 02:19:01,915 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:01" (1/1) ... [2023-11-12 02:19:01,915 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:01" (1/1) ... [2023-11-12 02:19:01,931 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:01" (1/1) ... [2023-11-12 02:19:01,938 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:01" (1/1) ... [2023-11-12 02:19:01,942 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:01" (1/1) ... [2023-11-12 02:19:01,945 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:01" (1/1) ... [2023-11-12 02:19:01,951 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:19:01,952 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:19:01,952 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:19:01,953 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:19:01,954 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:01" (1/1) ... [2023-11-12 02:19:01,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:19:01,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bcf7de9-8bdb-4dc2-adcc-bcc2956e2feb/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:19:02,006 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bcf7de9-8bdb-4dc2-adcc-bcc2956e2feb/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:19:02,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bcf7de9-8bdb-4dc2-adcc-bcc2956e2feb/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:19:02,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:19:02,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-12 02:19:02,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:19:02,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:19:02,050 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-12 02:19:02,050 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-12 02:19:02,051 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-12 02:19:02,051 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-12 02:19:02,051 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-12 02:19:02,051 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-12 02:19:02,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:19:02,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:19:02,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:19:02,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:19:02,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-12 02:19:02,054 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-12 02:19:02,195 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:19:02,197 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:19:03,056 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:19:03,087 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:19:03,089 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-12 02:19:03,093 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:19:03 BoogieIcfgContainer [2023-11-12 02:19:03,094 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:19:03,100 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:19:03,100 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:19:03,105 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:19:03,105 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:19:01" (1/3) ... [2023-11-12 02:19:03,106 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55fa4a2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:19:03, skipping insertion in model container [2023-11-12 02:19:03,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:19:01" (2/3) ... [2023-11-12 02:19:03,107 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55fa4a2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:19:03, skipping insertion in model container [2023-11-12 02:19:03,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:19:03" (3/3) ... [2023-11-12 02:19:03,110 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-subst.wvr.c [2023-11-12 02:19:03,120 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-12 02:19:03,132 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:19:03,133 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2023-11-12 02:19:03,133 INFO L521 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-12 02:19:03,283 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-12 02:19:03,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 445 places, 470 transitions, 961 flow [2023-11-12 02:19:03,615 INFO L124 PetriNetUnfolderBase]: 35/467 cut-off events. [2023-11-12 02:19:03,616 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-12 02:19:03,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 480 conditions, 467 events. 35/467 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1076 event pairs, 0 based on Foata normal form. 0/396 useless extension candidates. Maximal degree in co-relation 348. Up to 3 conditions per place. [2023-11-12 02:19:03,633 INFO L82 GeneralOperation]: Start removeDead. Operand has 445 places, 470 transitions, 961 flow [2023-11-12 02:19:03,656 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 412 places, 435 transitions, 885 flow [2023-11-12 02:19:03,661 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-12 02:19:03,685 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 412 places, 435 transitions, 885 flow [2023-11-12 02:19:03,694 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 412 places, 435 transitions, 885 flow [2023-11-12 02:19:03,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 412 places, 435 transitions, 885 flow [2023-11-12 02:19:03,825 INFO L124 PetriNetUnfolderBase]: 33/435 cut-off events. [2023-11-12 02:19:03,825 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-12 02:19:03,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 447 conditions, 435 events. 33/435 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 991 event pairs, 0 based on Foata normal form. 0/366 useless extension candidates. Maximal degree in co-relation 348. Up to 3 conditions per place. [2023-11-12 02:19:03,864 INFO L119 LiptonReduction]: Number of co-enabled transitions 45198 [2023-11-12 02:19:29,737 INFO L134 LiptonReduction]: Checked pairs total: 57376 [2023-11-12 02:19:29,737 INFO L136 LiptonReduction]: Total number of compositions: 554 [2023-11-12 02:19:29,754 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:19:29,761 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;@562296be, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:19:29,761 INFO L358 AbstractCegarLoop]: Starting to check reachability of 69 error locations. [2023-11-12 02:19:29,764 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-12 02:19:29,764 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-11-12 02:19:29,764 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-12 02:19:29,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:19:29,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-11-12 02:19:29,766 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-12 02:19:29,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:29,772 INFO L85 PathProgramCache]: Analyzing trace with hash 61037, now seen corresponding path program 1 times [2023-11-12 02:19:29,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:29,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594410601] [2023-11-12 02:19:29,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:29,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:30,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:30,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:30,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594410601] [2023-11-12 02:19:30,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594410601] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:19:30,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:19:30,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-12 02:19:30,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813871990] [2023-11-12 02:19:30,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:30,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:19:30,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:30,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:19:30,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:19:30,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 428 out of 1024 [2023-11-12 02:19:30,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 70 transitions, 155 flow. Second operand has 3 states, 3 states have (on average 428.6666666666667) internal successors, (1286), 3 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:30,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:19:30,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 428 of 1024 [2023-11-12 02:19:30,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:19:33,208 INFO L124 PetriNetUnfolderBase]: 12039/16786 cut-off events. [2023-11-12 02:19:33,208 INFO L125 PetriNetUnfolderBase]: For 585/585 co-relation queries the response was YES. [2023-11-12 02:19:33,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34095 conditions, 16786 events. 12039/16786 cut-off events. For 585/585 co-relation queries the response was YES. Maximal size of possible extension queue 985. Compared 96717 event pairs, 10297 based on Foata normal form. 0/6474 useless extension candidates. Maximal degree in co-relation 32046. Up to 16752 conditions per place. [2023-11-12 02:19:33,369 INFO L140 encePairwiseOnDemand]: 1005/1024 looper letters, 62 selfloop transitions, 7 changer transitions 0/70 dead transitions. [2023-11-12 02:19:33,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 70 transitions, 293 flow [2023-11-12 02:19:33,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:19:33,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:19:33,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1365 transitions. [2023-11-12 02:19:33,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4443359375 [2023-11-12 02:19:33,394 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1365 transitions. [2023-11-12 02:19:33,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1365 transitions. [2023-11-12 02:19:33,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:19:33,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1365 transitions. [2023-11-12 02:19:33,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 455.0) internal successors, (1365), 3 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:33,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1024.0) internal successors, (4096), 4 states have internal predecessors, (4096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:33,430 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1024.0) internal successors, (4096), 4 states have internal predecessors, (4096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:33,432 INFO L175 Difference]: Start difference. First operand has 72 places, 70 transitions, 155 flow. Second operand 3 states and 1365 transitions. [2023-11-12 02:19:33,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 70 transitions, 293 flow [2023-11-12 02:19:33,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 70 transitions, 284 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-12 02:19:33,451 INFO L231 Difference]: Finished difference. Result has 65 places, 70 transitions, 198 flow [2023-11-12 02:19:33,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1024, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=198, PETRI_PLACES=65, PETRI_TRANSITIONS=70} [2023-11-12 02:19:33,457 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -7 predicate places. [2023-11-12 02:19:33,458 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 70 transitions, 198 flow [2023-11-12 02:19:33,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 428.6666666666667) internal successors, (1286), 3 states have internal predecessors, (1286), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:33,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:19:33,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:19:33,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:19:33,461 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-12 02:19:33,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:33,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1894780, now seen corresponding path program 1 times [2023-11-12 02:19:33,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:33,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551516785] [2023-11-12 02:19:33,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:33,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:33,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:33,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:33,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:33,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551516785] [2023-11-12 02:19:33,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551516785] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:19:33,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:19:33,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:19:33,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956508049] [2023-11-12 02:19:33,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:33,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:19:33,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:33,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:19:33,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-12 02:19:33,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 428 out of 1024 [2023-11-12 02:19:33,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 70 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 429.0) internal successors, (1287), 3 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:33,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:19:33,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 428 of 1024 [2023-11-12 02:19:33,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:19:36,223 INFO L124 PetriNetUnfolderBase]: 12039/16783 cut-off events. [2023-11-12 02:19:36,223 INFO L125 PetriNetUnfolderBase]: For 130/130 co-relation queries the response was YES. [2023-11-12 02:19:36,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33942 conditions, 16783 events. 12039/16783 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 985. Compared 96726 event pairs, 10297 based on Foata normal form. 0/6478 useless extension candidates. Maximal degree in co-relation 33883. Up to 16740 conditions per place. [2023-11-12 02:19:36,362 INFO L140 encePairwiseOnDemand]: 1019/1024 looper letters, 63 selfloop transitions, 3 changer transitions 0/67 dead transitions. [2023-11-12 02:19:36,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 67 transitions, 318 flow [2023-11-12 02:19:36,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:19:36,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:19:36,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1347 transitions. [2023-11-12 02:19:36,370 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4384765625 [2023-11-12 02:19:36,370 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1347 transitions. [2023-11-12 02:19:36,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1347 transitions. [2023-11-12 02:19:36,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:19:36,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1347 transitions. [2023-11-12 02:19:36,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 449.0) internal successors, (1347), 3 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:36,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1024.0) internal successors, (4096), 4 states have internal predecessors, (4096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:36,393 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1024.0) internal successors, (4096), 4 states have internal predecessors, (4096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:36,393 INFO L175 Difference]: Start difference. First operand has 65 places, 70 transitions, 198 flow. Second operand 3 states and 1347 transitions. [2023-11-12 02:19:36,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 67 transitions, 318 flow [2023-11-12 02:19:36,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 67 transitions, 304 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:19:36,398 INFO L231 Difference]: Finished difference. Result has 62 places, 67 transitions, 178 flow [2023-11-12 02:19:36,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1024, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=62, PETRI_TRANSITIONS=67} [2023-11-12 02:19:36,400 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -10 predicate places. [2023-11-12 02:19:36,400 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 67 transitions, 178 flow [2023-11-12 02:19:36,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 429.0) internal successors, (1287), 3 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:36,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:19:36,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-12 02:19:36,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:19:36,403 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-12 02:19:36,403 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:36,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1894781, now seen corresponding path program 1 times [2023-11-12 02:19:36,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:36,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400744572] [2023-11-12 02:19:36,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:36,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:36,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:36,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:36,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:36,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400744572] [2023-11-12 02:19:36,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400744572] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:19:36,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [130863853] [2023-11-12 02:19:36,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:36,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:19:36,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bcf7de9-8bdb-4dc2-adcc-bcc2956e2feb/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:19:36,517 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bcf7de9-8bdb-4dc2-adcc-bcc2956e2feb/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:19:36,557 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bcf7de9-8bdb-4dc2-adcc-bcc2956e2feb/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:19:36,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:36,673 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-12 02:19:36,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:19:36,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:36,728 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:19:36,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:36,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [130863853] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:19:36,757 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:19:36,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-11-12 02:19:36,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210355976] [2023-11-12 02:19:36,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:19:36,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-12 02:19:36,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:36,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-12 02:19:36,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:19:36,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 428 out of 1024 [2023-11-12 02:19:36,890 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 67 transitions, 178 flow. Second operand has 7 states, 7 states have (on average 429.14285714285717) internal successors, (3004), 7 states have internal predecessors, (3004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:36,891 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:19:36,891 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 428 of 1024 [2023-11-12 02:19:36,891 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:19:39,237 INFO L124 PetriNetUnfolderBase]: 12048/16801 cut-off events. [2023-11-12 02:19:39,237 INFO L125 PetriNetUnfolderBase]: For 130/130 co-relation queries the response was YES. [2023-11-12 02:19:39,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33995 conditions, 16801 events. 12048/16801 cut-off events. For 130/130 co-relation queries the response was YES. Maximal size of possible extension queue 985. Compared 96835 event pairs, 10297 based on Foata normal form. 0/6488 useless extension candidates. Maximal degree in co-relation 33883. Up to 16752 conditions per place. [2023-11-12 02:19:39,320 INFO L140 encePairwiseOnDemand]: 1014/1024 looper letters, 59 selfloop transitions, 25 changer transitions 0/85 dead transitions. [2023-11-12 02:19:39,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 85 transitions, 424 flow [2023-11-12 02:19:39,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:19:39,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-12 02:19:39,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2661 transitions. [2023-11-12 02:19:39,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43310546875 [2023-11-12 02:19:39,331 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2661 transitions. [2023-11-12 02:19:39,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2661 transitions. [2023-11-12 02:19:39,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:19:39,334 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2661 transitions. [2023-11-12 02:19:39,342 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 443.5) internal successors, (2661), 6 states have internal predecessors, (2661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:39,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1024.0) internal successors, (7168), 7 states have internal predecessors, (7168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:39,362 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1024.0) internal successors, (7168), 7 states have internal predecessors, (7168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:39,362 INFO L175 Difference]: Start difference. First operand has 62 places, 67 transitions, 178 flow. Second operand 6 states and 2661 transitions. [2023-11-12 02:19:39,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 85 transitions, 424 flow [2023-11-12 02:19:39,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 85 transitions, 412 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:19:39,369 INFO L231 Difference]: Finished difference. Result has 68 places, 85 transitions, 347 flow [2023-11-12 02:19:39,370 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1024, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=347, PETRI_PLACES=68, PETRI_TRANSITIONS=85} [2023-11-12 02:19:39,371 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -4 predicate places. [2023-11-12 02:19:39,371 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 85 transitions, 347 flow [2023-11-12 02:19:39,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 429.14285714285717) internal successors, (3004), 7 states have internal predecessors, (3004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:39,374 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:19:39,374 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-11-12 02:19:39,385 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bcf7de9-8bdb-4dc2-adcc-bcc2956e2feb/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-12 02:19:39,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bcf7de9-8bdb-4dc2-adcc-bcc2956e2feb/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:19:39,580 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-12 02:19:39,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:39,580 INFO L85 PathProgramCache]: Analyzing trace with hash 615430702, now seen corresponding path program 2 times [2023-11-12 02:19:39,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:39,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078995968] [2023-11-12 02:19:39,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:39,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:39,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:39,796 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:39,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:39,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078995968] [2023-11-12 02:19:39,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078995968] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:19:39,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355316020] [2023-11-12 02:19:39,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:19:39,798 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:19:39,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bcf7de9-8bdb-4dc2-adcc-bcc2956e2feb/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:19:39,799 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bcf7de9-8bdb-4dc2-adcc-bcc2956e2feb/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:19:39,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bcf7de9-8bdb-4dc2-adcc-bcc2956e2feb/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:19:39,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-12 02:19:39,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:19:39,927 INFO L262 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:19:39,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:19:39,949 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-12 02:19:39,950 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:19:39,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355316020] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:19:39,950 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:19:39,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-11-12 02:19:39,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976967094] [2023-11-12 02:19:39,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:39,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-12 02:19:39,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:39,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-12 02:19:39,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:19:39,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 434 out of 1024 [2023-11-12 02:19:40,000 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 85 transitions, 347 flow. Second operand has 3 states, 3 states have (on average 435.0) internal successors, (1305), 3 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:40,000 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:19:40,000 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 434 of 1024 [2023-11-12 02:19:40,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:19:42,036 INFO L124 PetriNetUnfolderBase]: 12048/16800 cut-off events. [2023-11-12 02:19:42,036 INFO L125 PetriNetUnfolderBase]: For 135/135 co-relation queries the response was YES. [2023-11-12 02:19:42,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34042 conditions, 16800 events. 12048/16800 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 985. Compared 96704 event pairs, 10297 based on Foata normal form. 1/6495 useless extension candidates. Maximal degree in co-relation 33954. Up to 16765 conditions per place. [2023-11-12 02:19:42,127 INFO L140 encePairwiseOnDemand]: 1021/1024 looper letters, 77 selfloop transitions, 6 changer transitions 0/84 dead transitions. [2023-11-12 02:19:42,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 84 transitions, 503 flow [2023-11-12 02:19:42,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-12 02:19:42,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-12 02:19:42,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1362 transitions. [2023-11-12 02:19:42,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.443359375 [2023-11-12 02:19:42,133 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1362 transitions. [2023-11-12 02:19:42,133 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1362 transitions. [2023-11-12 02:19:42,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:19:42,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1362 transitions. [2023-11-12 02:19:42,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 454.0) internal successors, (1362), 3 states have internal predecessors, (1362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:42,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1024.0) internal successors, (4096), 4 states have internal predecessors, (4096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:42,151 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1024.0) internal successors, (4096), 4 states have internal predecessors, (4096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:42,152 INFO L175 Difference]: Start difference. First operand has 68 places, 85 transitions, 347 flow. Second operand 3 states and 1362 transitions. [2023-11-12 02:19:42,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 84 transitions, 503 flow [2023-11-12 02:19:42,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 84 transitions, 466 flow, removed 12 selfloop flow, removed 1 redundant places. [2023-11-12 02:19:42,156 INFO L231 Difference]: Finished difference. Result has 68 places, 84 transitions, 312 flow [2023-11-12 02:19:42,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1024, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=312, PETRI_PLACES=68, PETRI_TRANSITIONS=84} [2023-11-12 02:19:42,158 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -4 predicate places. [2023-11-12 02:19:42,158 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 84 transitions, 312 flow [2023-11-12 02:19:42,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 435.0) internal successors, (1305), 3 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:42,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:19:42,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-12 02:19:42,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bcf7de9-8bdb-4dc2-adcc-bcc2956e2feb/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:19:42,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bcf7de9-8bdb-4dc2-adcc-bcc2956e2feb/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:19:42,366 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-12 02:19:42,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:42,367 INFO L85 PathProgramCache]: Analyzing trace with hash 700053641, now seen corresponding path program 1 times [2023-11-12 02:19:42,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:42,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255952651] [2023-11-12 02:19:42,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:42,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:42,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:42,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:42,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:42,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255952651] [2023-11-12 02:19:42,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255952651] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:19:42,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:19:42,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-12 02:19:42,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888268148] [2023-11-12 02:19:42,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:42,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:19:42,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:42,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:19:42,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:19:42,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 422 out of 1024 [2023-11-12 02:19:42,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 84 transitions, 312 flow. Second operand has 4 states, 4 states have (on average 423.5) internal successors, (1694), 4 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:42,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:19:42,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 422 of 1024 [2023-11-12 02:19:42,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-12 02:19:46,611 INFO L124 PetriNetUnfolderBase]: 22818/31683 cut-off events. [2023-11-12 02:19:46,611 INFO L125 PetriNetUnfolderBase]: For 275/275 co-relation queries the response was YES. [2023-11-12 02:19:46,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64141 conditions, 31683 events. 22818/31683 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 1808. Compared 196813 event pairs, 19156 based on Foata normal form. 0/12347 useless extension candidates. Maximal degree in co-relation 64010. Up to 15967 conditions per place. [2023-11-12 02:19:46,798 INFO L140 encePairwiseOnDemand]: 1019/1024 looper letters, 150 selfloop transitions, 4 changer transitions 0/155 dead transitions. [2023-11-12 02:19:46,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 155 transitions, 855 flow [2023-11-12 02:19:46,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:19:46,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-12 02:19:46,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1805 transitions. [2023-11-12 02:19:46,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.440673828125 [2023-11-12 02:19:46,816 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1805 transitions. [2023-11-12 02:19:46,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1805 transitions. [2023-11-12 02:19:46,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-12 02:19:46,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1805 transitions. [2023-11-12 02:19:46,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 451.25) internal successors, (1805), 4 states have internal predecessors, (1805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:46,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1024.0) internal successors, (5120), 5 states have internal predecessors, (5120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:46,838 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1024.0) internal successors, (5120), 5 states have internal predecessors, (5120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:46,839 INFO L175 Difference]: Start difference. First operand has 68 places, 84 transitions, 312 flow. Second operand 4 states and 1805 transitions. [2023-11-12 02:19:46,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 155 transitions, 855 flow [2023-11-12 02:19:46,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 155 transitions, 843 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-12 02:19:46,845 INFO L231 Difference]: Finished difference. Result has 71 places, 85 transitions, 319 flow [2023-11-12 02:19:46,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1024, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=319, PETRI_PLACES=71, PETRI_TRANSITIONS=85} [2023-11-12 02:19:46,848 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -1 predicate places. [2023-11-12 02:19:46,848 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 85 transitions, 319 flow [2023-11-12 02:19:46,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 423.5) internal successors, (1694), 4 states have internal predecessors, (1694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:46,855 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-12 02:19:46,855 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:19:46,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:19:46,855 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (and 66 more)] === [2023-11-12 02:19:46,856 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:19:46,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1983107939, now seen corresponding path program 1 times [2023-11-12 02:19:46,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:19:46,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508296371] [2023-11-12 02:19:46,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:46,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:19:46,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:47,035 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:47,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:19:47,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508296371] [2023-11-12 02:19:47,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508296371] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:19:47,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908803826] [2023-11-12 02:19:47,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:19:47,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:19:47,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bcf7de9-8bdb-4dc2-adcc-bcc2956e2feb/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:19:47,038 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bcf7de9-8bdb-4dc2-adcc-bcc2956e2feb/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:19:47,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6bcf7de9-8bdb-4dc2-adcc-bcc2956e2feb/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:19:47,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:19:47,178 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-12 02:19:47,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:19:47,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:47,255 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:19:47,299 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:19:47,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908803826] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-12 02:19:47,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-12 02:19:47,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4, 2] total 8 [2023-11-12 02:19:47,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351187] [2023-11-12 02:19:47,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:19:47,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:19:47,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:19:47,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:19:47,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:19:47,495 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 1024 [2023-11-12 02:19:47,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 85 transitions, 319 flow. Second operand has 4 states, 4 states have (on average 413.75) internal successors, (1655), 4 states have internal predecessors, (1655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-12 02:19:47,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-12 02:19:47,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 1024 [2023-11-12 02:19:47,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand