./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 63e73d2abe89b782ca9e5c579baa72b5461ffc3c60c322f6f03d18cdd5548702 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:43:43,235 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:43:43,391 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:43:43,399 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:43:43,400 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:43:43,440 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:43:43,441 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:43:43,442 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:43:43,443 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:43:43,443 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:43:43,444 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:43:43,445 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:43:43,446 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:43:43,446 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:43:43,447 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:43:43,447 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:43:43,448 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:43:43,448 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:43:43,450 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:43:43,450 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:43:43,451 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:43:43,451 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:43:43,452 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:43:43,452 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:43:43,453 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:43:43,453 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:43:43,453 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:43:43,454 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:43:43,455 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:43:43,455 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:43:43,457 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:43:43,457 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:43:43,457 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:43:43,458 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:43:43,458 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:43:43,458 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:43:43,458 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:43:43,459 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:43:43,459 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:43:43,459 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:43:43,459 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:43:43,460 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:43:43,460 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_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 63e73d2abe89b782ca9e5c579baa72b5461ffc3c60c322f6f03d18cdd5548702 [2023-11-26 11:43:43,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:43:43,865 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:43:43,868 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:43:43,869 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:43:43,870 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:43:43,871 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2023-11-26 11:43:46,942 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:43:47,215 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:43:47,217 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c [2023-11-26 11:43:47,229 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/data/d56d724ec/807591f3e5c7495894291a894a36c4b4/FLAGa4c705194 [2023-11-26 11:43:47,247 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/data/d56d724ec/807591f3e5c7495894291a894a36c4b4 [2023-11-26 11:43:47,255 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:43:47,257 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:43:47,259 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:43:47,260 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:43:47,266 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:43:47,267 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:43:47" (1/1) ... [2023-11-26 11:43:47,268 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4736620c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:47, skipping insertion in model container [2023-11-26 11:43:47,268 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:43:47" (1/1) ... [2023-11-26 11:43:47,303 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:43:47,628 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c[2637,2650] [2023-11-26 11:43:47,652 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:43:47,665 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:43:47,717 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/sv-benchmarks/c/weaver/popl20-more-vector-add.wvr.c[2637,2650] [2023-11-26 11:43:47,724 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:43:47,745 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:43:47,745 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:47 WrapperNode [2023-11-26 11:43:47,745 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:43:47,747 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:43:47,747 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:43:47,748 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:43:47,761 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:47" (1/1) ... [2023-11-26 11:43:47,778 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:47" (1/1) ... [2023-11-26 11:43:47,816 INFO L138 Inliner]: procedures = 25, calls = 46, calls flagged for inlining = 11, calls inlined = 17, statements flattened = 203 [2023-11-26 11:43:47,817 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:43:47,818 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:43:47,818 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:43:47,818 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:43:47,835 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:47" (1/1) ... [2023-11-26 11:43:47,835 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:47" (1/1) ... [2023-11-26 11:43:47,840 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:47" (1/1) ... [2023-11-26 11:43:47,867 INFO L175 MemorySlicer]: Split 23 memory accesses to 5 slices as follows [2, 15, 2, 2, 2]. 65 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 10 writes are split as follows [0, 7, 1, 1, 1]. [2023-11-26 11:43:47,868 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:47" (1/1) ... [2023-11-26 11:43:47,869 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:47" (1/1) ... [2023-11-26 11:43:47,880 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:47" (1/1) ... [2023-11-26 11:43:47,890 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:47" (1/1) ... [2023-11-26 11:43:47,896 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:47" (1/1) ... [2023-11-26 11:43:47,904 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:47" (1/1) ... [2023-11-26 11:43:47,908 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:43:47,913 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:43:47,913 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:43:47,913 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:43:47,914 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:47" (1/1) ... [2023-11-26 11:43:47,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:43:47,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:43:47,954 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:43:47,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:43:48,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:43:48,003 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:43:48,003 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:43:48,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:43:48,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:43:48,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:43:48,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 11:43:48,004 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:43:48,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:43:48,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:43:48,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 11:43:48,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 11:43:48,008 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-26 11:43:48,008 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-26 11:43:48,008 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-26 11:43:48,008 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-26 11:43:48,008 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-26 11:43:48,009 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-26 11:43:48,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:43:48,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:43:48,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:43:48,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:43:48,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 11:43:48,011 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 11:43:48,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:43:48,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:43:48,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:43:48,016 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-26 11:43:48,167 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:43:48,170 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:43:48,603 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:43:49,053 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:43:49,053 INFO L309 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-26 11:43:49,054 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:43:49 BoogieIcfgContainer [2023-11-26 11:43:49,054 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:43:49,056 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:43:49,057 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:43:49,060 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:43:49,061 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:43:47" (1/3) ... [2023-11-26 11:43:49,062 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5316385d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:43:49, skipping insertion in model container [2023-11-26 11:43:49,062 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:43:47" (2/3) ... [2023-11-26 11:43:49,062 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5316385d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:43:49, skipping insertion in model container [2023-11-26 11:43:49,063 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:43:49" (3/3) ... [2023-11-26 11:43:49,064 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-vector-add.wvr.c [2023-11-26 11:43:49,074 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-26 11:43:49,085 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:43:49,086 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:43:49,086 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-26 11:43:49,133 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-26 11:43:49,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 35 transitions, 91 flow [2023-11-26 11:43:49,203 INFO L124 PetriNetUnfolderBase]: 7/32 cut-off events. [2023-11-26 11:43:49,203 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-26 11:43:49,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 32 events. 7/32 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2023-11-26 11:43:49,207 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 35 transitions, 91 flow [2023-11-26 11:43:49,210 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 34 places, 31 transitions, 80 flow [2023-11-26 11:43:49,221 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:43:49,228 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;@319737fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:43:49,228 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-11-26 11:43:49,246 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-26 11:43:49,247 INFO L124 PetriNetUnfolderBase]: 7/30 cut-off events. [2023-11-26 11:43:49,247 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-26 11:43:49,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:43:49,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:43:49,249 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 11:43:49,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:43:49,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1834515043, now seen corresponding path program 1 times [2023-11-26 11:43:49,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:43:49,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730645314] [2023-11-26 11:43:49,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:43:49,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:43:49,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:50,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:43:50,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:43:50,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730645314] [2023-11-26 11:43:50,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730645314] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:43:50,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:43:50,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-26 11:43:50,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311085499] [2023-11-26 11:43:50,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:43:50,107 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:43:50,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:43:50,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:43:50,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 11:43:50,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 35 [2023-11-26 11:43:50,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 31 transitions, 80 flow. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:50,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:43:50,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 35 [2023-11-26 11:43:50,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:43:50,459 INFO L124 PetriNetUnfolderBase]: 447/668 cut-off events. [2023-11-26 11:43:50,459 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2023-11-26 11:43:50,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1418 conditions, 668 events. 447/668 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1883 event pairs, 276 based on Foata normal form. 1/497 useless extension candidates. Maximal degree in co-relation 534. Up to 334 conditions per place. [2023-11-26 11:43:50,467 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 26 selfloop transitions, 8 changer transitions 27/62 dead transitions. [2023-11-26 11:43:50,467 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 62 transitions, 282 flow [2023-11-26 11:43:50,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:43:50,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 11:43:50,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 85 transitions. [2023-11-26 11:43:50,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2023-11-26 11:43:50,482 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 85 transitions. [2023-11-26 11:43:50,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 85 transitions. [2023-11-26 11:43:50,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:43:50,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 85 transitions. [2023-11-26 11:43:50,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:50,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 35.0) internal successors, (210), 6 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:50,493 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 35.0) internal successors, (210), 6 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:50,495 INFO L175 Difference]: Start difference. First operand has 34 places, 31 transitions, 80 flow. Second operand 5 states and 85 transitions. [2023-11-26 11:43:50,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 62 transitions, 282 flow [2023-11-26 11:43:50,501 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 62 transitions, 258 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-11-26 11:43:50,504 INFO L231 Difference]: Finished difference. Result has 35 places, 35 transitions, 120 flow [2023-11-26 11:43:50,506 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=120, PETRI_PLACES=35, PETRI_TRANSITIONS=35} [2023-11-26 11:43:50,510 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 1 predicate places. [2023-11-26 11:43:50,510 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 35 transitions, 120 flow [2023-11-26 11:43:50,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 4 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:50,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:43:50,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:43:50,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:43:50,512 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 11:43:50,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:43:50,512 INFO L85 PathProgramCache]: Analyzing trace with hash 731932584, now seen corresponding path program 1 times [2023-11-26 11:43:50,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:43:50,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278287053] [2023-11-26 11:43:50,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:43:50,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:43:50,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:50,821 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 11:43:50,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:43:50,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278287053] [2023-11-26 11:43:50,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278287053] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:43:50,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576794290] [2023-11-26 11:43:50,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:43:50,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:43:50,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:43:50,831 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:43:50,842 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:43:51,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:51,032 INFO L262 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:43:51,040 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:43:51,173 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 11:43:51,173 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:43:51,244 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 11:43:51,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576794290] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-26 11:43:51,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:43:51,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2023-11-26 11:43:51,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436656323] [2023-11-26 11:43:51,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:43:51,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:43:51,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:43:51,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:43:51,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:43:51,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 35 [2023-11-26 11:43:51,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 35 transitions, 120 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:51,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:43:51,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 35 [2023-11-26 11:43:51,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:43:51,424 INFO L124 PetriNetUnfolderBase]: 283/423 cut-off events. [2023-11-26 11:43:51,424 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-11-26 11:43:51,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 890 conditions, 423 events. 283/423 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1110 event pairs, 138 based on Foata normal form. 0/326 useless extension candidates. Maximal degree in co-relation 880. Up to 336 conditions per place. [2023-11-26 11:43:51,429 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 42 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2023-11-26 11:43:51,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 47 transitions, 238 flow [2023-11-26 11:43:51,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:43:51,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-26 11:43:51,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 64 transitions. [2023-11-26 11:43:51,431 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3657142857142857 [2023-11-26 11:43:51,432 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 64 transitions. [2023-11-26 11:43:51,432 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 64 transitions. [2023-11-26 11:43:51,432 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:43:51,432 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 64 transitions. [2023-11-26 11:43:51,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:51,436 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 35.0) internal successors, (210), 6 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:51,438 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 35.0) internal successors, (210), 6 states have internal predecessors, (210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:51,438 INFO L175 Difference]: Start difference. First operand has 35 places, 35 transitions, 120 flow. Second operand 5 states and 64 transitions. [2023-11-26 11:43:51,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 47 transitions, 238 flow [2023-11-26 11:43:51,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 47 transitions, 220 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-11-26 11:43:51,443 INFO L231 Difference]: Finished difference. Result has 35 places, 36 transitions, 118 flow [2023-11-26 11:43:51,443 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=118, PETRI_PLACES=35, PETRI_TRANSITIONS=36} [2023-11-26 11:43:51,444 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 1 predicate places. [2023-11-26 11:43:51,445 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 36 transitions, 118 flow [2023-11-26 11:43:51,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:51,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:43:51,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:43:51,459 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:43:51,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-26 11:43:51,653 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 11:43:51,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:43:51,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1001289756, now seen corresponding path program 1 times [2023-11-26 11:43:51,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:43:51,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458468539] [2023-11-26 11:43:51,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:43:51,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:43:51,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:51,940 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 11:43:51,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:43:51,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458468539] [2023-11-26 11:43:51,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458468539] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:43:51,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134021850] [2023-11-26 11:43:51,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:43:51,941 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:43:51,941 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:43:51,942 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:43:51,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:43:52,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:52,104 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 11:43:52,107 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:43:52,239 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 11:43:52,240 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:43:52,326 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 11:43:52,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134021850] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:43:52,327 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:43:52,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2023-11-26 11:43:52,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213879359] [2023-11-26 11:43:52,328 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:43:52,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 11:43:52,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:43:52,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 11:43:52,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:43:52,330 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 35 [2023-11-26 11:43:52,331 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 36 transitions, 118 flow. Second operand has 14 states, 14 states have (on average 7.142857142857143) internal successors, (100), 14 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:52,331 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:43:52,331 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 35 [2023-11-26 11:43:52,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:43:52,812 INFO L124 PetriNetUnfolderBase]: 481/718 cut-off events. [2023-11-26 11:43:52,812 INFO L125 PetriNetUnfolderBase]: For 228/228 co-relation queries the response was YES. [2023-11-26 11:43:52,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1699 conditions, 718 events. 481/718 cut-off events. For 228/228 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2286 event pairs, 183 based on Foata normal form. 0/540 useless extension candidates. Maximal degree in co-relation 1653. Up to 410 conditions per place. [2023-11-26 11:43:52,819 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 67 selfloop transitions, 8 changer transitions 0/76 dead transitions. [2023-11-26 11:43:52,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 76 transitions, 386 flow [2023-11-26 11:43:52,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-26 11:43:52,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-26 11:43:52,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 101 transitions. [2023-11-26 11:43:52,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3607142857142857 [2023-11-26 11:43:52,822 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 101 transitions. [2023-11-26 11:43:52,822 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 101 transitions. [2023-11-26 11:43:52,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:43:52,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 101 transitions. [2023-11-26 11:43:52,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 12.625) internal successors, (101), 8 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:52,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 35.0) internal successors, (315), 9 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) [2023-11-26 11:43:52,825 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 35.0) internal successors, (315), 9 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) [2023-11-26 11:43:52,825 INFO L175 Difference]: Start difference. First operand has 35 places, 36 transitions, 118 flow. Second operand 8 states and 101 transitions. [2023-11-26 11:43:52,826 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 76 transitions, 386 flow [2023-11-26 11:43:52,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 76 transitions, 366 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-11-26 11:43:52,829 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 152 flow [2023-11-26 11:43:52,830 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=152, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2023-11-26 11:43:52,830 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 9 predicate places. [2023-11-26 11:43:52,831 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 152 flow [2023-11-26 11:43:52,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.142857142857143) internal successors, (100), 14 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:52,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:43:52,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:43:52,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:43:53,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-26 11:43:53,045 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 11:43:53,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:43:53,046 INFO L85 PathProgramCache]: Analyzing trace with hash -294290082, now seen corresponding path program 2 times [2023-11-26 11:43:53,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:43:53,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220017606] [2023-11-26 11:43:53,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:43:53,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:43:53,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:53,285 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:43:53,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:43:53,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220017606] [2023-11-26 11:43:53,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220017606] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:43:53,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209322670] [2023-11-26 11:43:53,286 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:43:53,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:43:53,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:43:53,288 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:43:53,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:43:53,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-26 11:43:53,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:43:53,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:43:53,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:43:53,521 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 11:43:53,521 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:43:53,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [209322670] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:43:53,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:43:53,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2023-11-26 11:43:53,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311774642] [2023-11-26 11:43:53,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:43:53,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:43:53,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:43:53,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:43:53,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:43:53,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 35 [2023-11-26 11:43:53,531 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 152 flow. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:53,531 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:43:53,531 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 35 [2023-11-26 11:43:53,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:43:53,932 INFO L124 PetriNetUnfolderBase]: 757/1131 cut-off events. [2023-11-26 11:43:53,933 INFO L125 PetriNetUnfolderBase]: For 671/671 co-relation queries the response was YES. [2023-11-26 11:43:53,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3263 conditions, 1131 events. 757/1131 cut-off events. For 671/671 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4018 event pairs, 315 based on Foata normal form. 1/895 useless extension candidates. Maximal degree in co-relation 3213. Up to 701 conditions per place. [2023-11-26 11:43:53,944 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 72 selfloop transitions, 7 changer transitions 11/91 dead transitions. [2023-11-26 11:43:53,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 91 transitions, 506 flow [2023-11-26 11:43:53,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:43:53,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:43:53,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2023-11-26 11:43:53,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2023-11-26 11:43:53,949 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 98 transitions. [2023-11-26 11:43:53,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 98 transitions. [2023-11-26 11:43:53,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:43:53,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 98 transitions. [2023-11-26 11:43:53,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:53,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:53,954 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:53,954 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 152 flow. Second operand 6 states and 98 transitions. [2023-11-26 11:43:53,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 91 transitions, 506 flow [2023-11-26 11:43:53,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 91 transitions, 483 flow, removed 5 selfloop flow, removed 4 redundant places. [2023-11-26 11:43:53,962 INFO L231 Difference]: Finished difference. Result has 48 places, 44 transitions, 190 flow [2023-11-26 11:43:53,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=190, PETRI_PLACES=48, PETRI_TRANSITIONS=44} [2023-11-26 11:43:53,964 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2023-11-26 11:43:53,964 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 44 transitions, 190 flow [2023-11-26 11:43:53,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:53,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:43:53,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:43:53,976 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-26 11:43:54,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:43:54,171 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 11:43:54,172 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:43:54,172 INFO L85 PathProgramCache]: Analyzing trace with hash -881909060, now seen corresponding path program 3 times [2023-11-26 11:43:54,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:43:54,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012591792] [2023-11-26 11:43:54,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:43:54,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:43:54,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:54,449 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 11:43:54,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:43:54,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012591792] [2023-11-26 11:43:54,450 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012591792] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:43:54,450 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1151726498] [2023-11-26 11:43:54,450 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 11:43:54,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:43:54,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:43:54,452 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:43:54,456 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:43:54,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-26 11:43:54,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:43:54,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:43:54,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:43:54,788 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:43:54,788 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:43:54,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1151726498] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:43:54,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:43:54,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2023-11-26 11:43:54,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144504279] [2023-11-26 11:43:54,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:43:54,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:43:54,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:43:54,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:43:54,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:43:54,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 35 [2023-11-26 11:43:54,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 44 transitions, 190 flow. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:54,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:43:54,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 35 [2023-11-26 11:43:54,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:43:55,227 INFO L124 PetriNetUnfolderBase]: 819/1215 cut-off events. [2023-11-26 11:43:55,227 INFO L125 PetriNetUnfolderBase]: For 1348/1348 co-relation queries the response was YES. [2023-11-26 11:43:55,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4058 conditions, 1215 events. 819/1215 cut-off events. For 1348/1348 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4388 event pairs, 403 based on Foata normal form. 1/1028 useless extension candidates. Maximal degree in co-relation 4030. Up to 915 conditions per place. [2023-11-26 11:43:55,241 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 67 selfloop transitions, 11 changer transitions 11/90 dead transitions. [2023-11-26 11:43:55,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 90 transitions, 546 flow [2023-11-26 11:43:55,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:43:55,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:43:55,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2023-11-26 11:43:55,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46190476190476193 [2023-11-26 11:43:55,243 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 97 transitions. [2023-11-26 11:43:55,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 97 transitions. [2023-11-26 11:43:55,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:43:55,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 97 transitions. [2023-11-26 11:43:55,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 16.166666666666668) internal successors, (97), 6 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:55,245 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:55,245 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:55,245 INFO L175 Difference]: Start difference. First operand has 48 places, 44 transitions, 190 flow. Second operand 6 states and 97 transitions. [2023-11-26 11:43:55,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 90 transitions, 546 flow [2023-11-26 11:43:55,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 90 transitions, 520 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-11-26 11:43:55,254 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 261 flow [2023-11-26 11:43:55,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=261, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2023-11-26 11:43:55,255 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 20 predicate places. [2023-11-26 11:43:55,256 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 261 flow [2023-11-26 11:43:55,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:55,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:43:55,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:43:55,265 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-26 11:43:55,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:43:55,466 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 11:43:55,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:43:55,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1110106466, now seen corresponding path program 4 times [2023-11-26 11:43:55,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:43:55,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094597726] [2023-11-26 11:43:55,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:43:55,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:43:55,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:55,779 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:43:55,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:43:55,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094597726] [2023-11-26 11:43:55,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094597726] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:43:55,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335900255] [2023-11-26 11:43:55,781 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-26 11:43:55,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:43:55,781 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:43:55,782 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:43:55,800 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:43:55,915 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-26 11:43:55,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:43:55,917 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:43:55,920 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:43:55,998 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:43:55,998 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:43:56,084 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:43:56,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335900255] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:43:56,084 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:43:56,085 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2023-11-26 11:43:56,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630220766] [2023-11-26 11:43:56,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:43:56,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 11:43:56,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:43:56,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 11:43:56,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2023-11-26 11:43:56,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 35 [2023-11-26 11:43:56,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 261 flow. Second operand has 14 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:56,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:43:56,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 35 [2023-11-26 11:43:56,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:43:56,896 INFO L124 PetriNetUnfolderBase]: 819/1227 cut-off events. [2023-11-26 11:43:56,897 INFO L125 PetriNetUnfolderBase]: For 2507/2507 co-relation queries the response was YES. [2023-11-26 11:43:56,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4485 conditions, 1227 events. 819/1227 cut-off events. For 2507/2507 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4739 event pairs, 155 based on Foata normal form. 12/1049 useless extension candidates. Maximal degree in co-relation 4450. Up to 378 conditions per place. [2023-11-26 11:43:56,913 INFO L140 encePairwiseOnDemand]: 18/35 looper letters, 101 selfloop transitions, 61 changer transitions 0/163 dead transitions. [2023-11-26 11:43:56,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 163 transitions, 1144 flow [2023-11-26 11:43:56,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-11-26 11:43:56,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-11-26 11:43:56,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 207 transitions. [2023-11-26 11:43:56,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3112781954887218 [2023-11-26 11:43:56,916 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 207 transitions. [2023-11-26 11:43:56,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 207 transitions. [2023-11-26 11:43:56,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:43:56,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 207 transitions. [2023-11-26 11:43:56,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 10.894736842105264) internal successors, (207), 19 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:56,920 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 35.0) internal successors, (700), 20 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:56,920 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 35.0) internal successors, (700), 20 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:56,921 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 261 flow. Second operand 19 states and 207 transitions. [2023-11-26 11:43:56,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 163 transitions, 1144 flow [2023-11-26 11:43:56,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 163 transitions, 1058 flow, removed 15 selfloop flow, removed 3 redundant places. [2023-11-26 11:43:56,936 INFO L231 Difference]: Finished difference. Result has 74 places, 89 transitions, 689 flow [2023-11-26 11:43:56,937 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=233, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=689, PETRI_PLACES=74, PETRI_TRANSITIONS=89} [2023-11-26 11:43:56,937 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 40 predicate places. [2023-11-26 11:43:56,938 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 89 transitions, 689 flow [2023-11-26 11:43:56,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.5) internal successors, (105), 14 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:56,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:43:56,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:43:56,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:43:57,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:43:57,145 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 11:43:57,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:43:57,146 INFO L85 PathProgramCache]: Analyzing trace with hash -922043104, now seen corresponding path program 5 times [2023-11-26 11:43:57,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:43:57,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688423424] [2023-11-26 11:43:57,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:43:57,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:43:57,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:57,441 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:43:57,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:43:57,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688423424] [2023-11-26 11:43:57,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688423424] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:43:57,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943519369] [2023-11-26 11:43:57,442 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-26 11:43:57,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:43:57,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:43:57,443 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:43:57,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:43:57,616 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 11:43:57,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:43:57,618 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:43:57,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:43:57,707 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:43:57,708 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:43:57,792 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:43:57,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943519369] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:43:57,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:43:57,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2023-11-26 11:43:57,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437373586] [2023-11-26 11:43:57,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:43:57,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-26 11:43:57,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:43:57,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-26 11:43:57,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-11-26 11:43:57,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 35 [2023-11-26 11:43:57,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 89 transitions, 689 flow. Second operand has 15 states, 15 states have (on average 7.8) internal successors, (117), 15 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:57,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:43:57,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 35 [2023-11-26 11:43:57,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:43:58,520 INFO L124 PetriNetUnfolderBase]: 805/1198 cut-off events. [2023-11-26 11:43:58,520 INFO L125 PetriNetUnfolderBase]: For 4038/4038 co-relation queries the response was YES. [2023-11-26 11:43:58,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5155 conditions, 1198 events. 805/1198 cut-off events. For 4038/4038 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4471 event pairs, 197 based on Foata normal form. 10/1096 useless extension candidates. Maximal degree in co-relation 5087. Up to 490 conditions per place. [2023-11-26 11:43:58,536 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 87 selfloop transitions, 59 changer transitions 0/147 dead transitions. [2023-11-26 11:43:58,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 147 transitions, 1235 flow [2023-11-26 11:43:58,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-26 11:43:58,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-26 11:43:58,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 156 transitions. [2023-11-26 11:43:58,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3183673469387755 [2023-11-26 11:43:58,539 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 156 transitions. [2023-11-26 11:43:58,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 156 transitions. [2023-11-26 11:43:58,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:43:58,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 156 transitions. [2023-11-26 11:43:58,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 11.142857142857142) internal successors, (156), 14 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:58,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 35.0) internal successors, (525), 15 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:58,542 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 35.0) internal successors, (525), 15 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:58,543 INFO L175 Difference]: Start difference. First operand has 74 places, 89 transitions, 689 flow. Second operand 14 states and 156 transitions. [2023-11-26 11:43:58,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 147 transitions, 1235 flow [2023-11-26 11:43:58,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 147 transitions, 1142 flow, removed 24 selfloop flow, removed 5 redundant places. [2023-11-26 11:43:58,579 INFO L231 Difference]: Finished difference. Result has 82 places, 104 transitions, 849 flow [2023-11-26 11:43:58,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=849, PETRI_PLACES=82, PETRI_TRANSITIONS=104} [2023-11-26 11:43:58,580 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 48 predicate places. [2023-11-26 11:43:58,581 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 104 transitions, 849 flow [2023-11-26 11:43:58,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.8) internal successors, (117), 15 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:58,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:43:58,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:43:58,593 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 11:43:58,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:43:58,789 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 11:43:58,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:43:58,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1908067698, now seen corresponding path program 6 times [2023-11-26 11:43:58,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:43:58,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084444728] [2023-11-26 11:43:58,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:43:58,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:43:58,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:43:58,988 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:43:58,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:43:58,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084444728] [2023-11-26 11:43:58,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084444728] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:43:58,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856382272] [2023-11-26 11:43:58,989 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-26 11:43:58,989 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:43:58,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:43:58,990 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:43:58,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 11:43:59,154 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-11-26 11:43:59,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:43:59,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 11:43:59,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:43:59,237 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-26 11:43:59,238 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:43:59,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856382272] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:43:59,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:43:59,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 12 [2023-11-26 11:43:59,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567439276] [2023-11-26 11:43:59,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:43:59,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:43:59,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:43:59,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:43:59,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2023-11-26 11:43:59,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 35 [2023-11-26 11:43:59,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 104 transitions, 849 flow. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:59,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-26 11:43:59,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 35 [2023-11-26 11:43:59,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-26 11:43:59,681 INFO L124 PetriNetUnfolderBase]: 805/1196 cut-off events. [2023-11-26 11:43:59,682 INFO L125 PetriNetUnfolderBase]: For 4849/4849 co-relation queries the response was YES. [2023-11-26 11:43:59,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5308 conditions, 1196 events. 805/1196 cut-off events. For 4849/4849 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4388 event pairs, 297 based on Foata normal form. 1/1085 useless extension candidates. Maximal degree in co-relation 5242. Up to 899 conditions per place. [2023-11-26 11:43:59,702 INFO L140 encePairwiseOnDemand]: 28/35 looper letters, 88 selfloop transitions, 32 changer transitions 12/133 dead transitions. [2023-11-26 11:43:59,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 133 transitions, 1206 flow [2023-11-26 11:43:59,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:43:59,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-26 11:43:59,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 95 transitions. [2023-11-26 11:43:59,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4523809523809524 [2023-11-26 11:43:59,705 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 95 transitions. [2023-11-26 11:43:59,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 95 transitions. [2023-11-26 11:43:59,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-26 11:43:59,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 95 transitions. [2023-11-26 11:43:59,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:59,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:59,707 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 35.0) internal successors, (245), 7 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:59,708 INFO L175 Difference]: Start difference. First operand has 82 places, 104 transitions, 849 flow. Second operand 6 states and 95 transitions. [2023-11-26 11:43:59,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 133 transitions, 1206 flow [2023-11-26 11:43:59,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 133 transitions, 1119 flow, removed 20 selfloop flow, removed 6 redundant places. [2023-11-26 11:43:59,742 INFO L231 Difference]: Finished difference. Result has 82 places, 100 transitions, 786 flow [2023-11-26 11:43:59,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=786, PETRI_PLACES=82, PETRI_TRANSITIONS=100} [2023-11-26 11:43:59,743 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 48 predicate places. [2023-11-26 11:43:59,744 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 100 transitions, 786 flow [2023-11-26 11:43:59,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:43:59,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-26 11:43:59,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:43:59,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 11:43:59,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:43:59,953 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-11-26 11:43:59,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:43:59,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1955482542, now seen corresponding path program 1 times [2023-11-26 11:43:59,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:43:59,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045881422] [2023-11-26 11:43:59,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:43:59,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:44:00,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:02,252 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 11:44:02,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:44:02,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045881422] [2023-11-26 11:44:02,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045881422] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:44:02,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484877943] [2023-11-26 11:44:02,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:44:02,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:44:02,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:44:02,255 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:44:02,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0fc11e26-ccc3-48ea-9028-4d3409f90a1b/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 11:44:02,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:44:02,447 INFO L262 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 57 conjunts are in the unsatisfiable core [2023-11-26 11:44:02,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:44:02,518 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-26 11:44:02,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 11:44:02,534 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-26 11:44:02,543 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 11:44:02,545 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-26 11:44:02,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 11:44:02,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 11:44:02,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 11:44:02,558 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-26 11:44:02,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 11:44:02,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 11:44:02,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 11:44:02,591 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 11:44:02,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 11:44:02,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-26 11:44:02,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 11:44:02,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 11:44:02,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 11:44:02,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-26 11:44:02,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 11:44:02,643 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 1 [2023-11-26 11:44:02,655 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 11:44:02,656 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-26 11:44:02,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 11:44:02,665 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 11:44:02,670 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 11:44:02,671 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-26 11:44:02,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 11:44:02,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-26 11:44:02,688 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 11:44:02,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 11:44:02,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 11:44:02,696 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-26 11:44:02,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 11:44:02,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 11:44:02,715 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 11:44:02,715 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 11:44:02,720 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 11:44:02,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-26 11:44:02,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 11:44:02,740 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2023-11-26 11:44:02,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 11:44:02,749 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 11:44:02,757 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 11:44:02,758 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 1 [2023-11-26 11:44:02,766 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-26 11:44:02,767 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-26 11:44:02,870 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-11-26 11:44:02,870 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-11-26 11:44:02,970 INFO L349 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2023-11-26 11:44:02,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2023-11-26 11:44:03,119 INFO L349 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2023-11-26 11:44:03,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2023-11-26 11:44:03,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 24 [2023-11-26 11:44:04,050 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-26 11:44:04,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 44 [2023-11-26 11:44:04,715 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 11:44:04,715 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:44:06,417 INFO L349 Elim1Store]: treesize reduction 118, result has 70.9 percent of original size [2023-11-26 11:44:06,418 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 3950 treesize of output 2125 [2023-11-26 11:44:06,685 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 11:44:06,685 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1799 treesize of output 1709 [2023-11-26 11:44:07,078 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-26 11:44:07,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 17 [2023-11-26 11:44:07,440 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-26 11:44:07,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 9 [2023-11-26 11:44:07,876 INFO L349 Elim1Store]: treesize reduction 8, result has 87.7 percent of original size [2023-11-26 11:44:07,877 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 86 [2023-11-26 11:44:08,277 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-11-26 11:44:08,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 9