./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 30e01a73 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_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 73c55a951ef2b92a665c2c32d76e33a5a03bdbde67ee3c8e6748faf493088c7e --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 22:27:57,616 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 22:27:57,749 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-23 22:27:57,761 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 22:27:57,762 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 22:27:57,808 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 22:27:57,810 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 22:27:57,810 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 22:27:57,811 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 22:27:57,817 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 22:27:57,817 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 22:27:57,818 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 22:27:57,819 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 22:27:57,821 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 22:27:57,821 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 22:27:57,822 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 22:27:57,822 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 22:27:57,822 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 22:27:57,823 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 22:27:57,823 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 22:27:57,825 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 22:27:57,826 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 22:27:57,826 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 22:27:57,827 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 22:27:57,827 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-23 22:27:57,827 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 22:27:57,828 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 22:27:57,828 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 22:27:57,829 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 22:27:57,830 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 22:27:57,831 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 22:27:57,831 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 22:27:57,831 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 22:27:57,832 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:27:57,832 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 22:27:57,832 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 22:27:57,832 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 22:27:57,833 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 22:27:57,833 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 22:27:57,833 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 22:27:57,833 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 22:27:57,834 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 22:27:57,834 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 22:27:57,834 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 22:27:57,835 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_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 73c55a951ef2b92a665c2c32d76e33a5a03bdbde67ee3c8e6748faf493088c7e [2023-11-23 22:27:58,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 22:27:58,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 22:27:58,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 22:27:58,157 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 22:27:58,157 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 22:27:58,159 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/../../sv-benchmarks/c/weaver/popl20-commit-1.wvr.c [2023-11-23 22:28:01,334 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 22:28:01,584 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 22:28:01,584 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/sv-benchmarks/c/weaver/popl20-commit-1.wvr.c [2023-11-23 22:28:01,594 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/data/959ed4507/a21f0fb4066e47f097b005404bb14277/FLAG713b2fe6c [2023-11-23 22:28:01,609 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/data/959ed4507/a21f0fb4066e47f097b005404bb14277 [2023-11-23 22:28:01,612 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 22:28:01,614 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 22:28:01,615 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 22:28:01,615 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 22:28:01,621 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 22:28:01,622 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:28:01" (1/1) ... [2023-11-23 22:28:01,623 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c997f3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:01, skipping insertion in model container [2023-11-23 22:28:01,624 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:28:01" (1/1) ... [2023-11-23 22:28:01,672 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 22:28:01,891 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:28:01,905 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 22:28:01,943 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 22:28:01,953 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:28:01,954 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 22:28:01,962 INFO L206 MainTranslator]: Completed translation [2023-11-23 22:28:01,962 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:01 WrapperNode [2023-11-23 22:28:01,963 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 22:28:01,964 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 22:28:01,964 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 22:28:01,964 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 22:28:01,970 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:01" (1/1) ... [2023-11-23 22:28:01,981 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:01" (1/1) ... [2023-11-23 22:28:02,029 INFO L138 Inliner]: procedures = 25, calls = 69, calls flagged for inlining = 21, calls inlined = 25, statements flattened = 376 [2023-11-23 22:28:02,029 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 22:28:02,030 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 22:28:02,030 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 22:28:02,030 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 22:28:02,043 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:01" (1/1) ... [2023-11-23 22:28:02,043 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:01" (1/1) ... [2023-11-23 22:28:02,050 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:01" (1/1) ... [2023-11-23 22:28:02,076 INFO L189 HeapSplitter]: Split 19 memory accesses to 5 slices as follows [2, 11, 2, 2, 2] [2023-11-23 22:28:02,076 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:01" (1/1) ... [2023-11-23 22:28:02,076 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:01" (1/1) ... [2023-11-23 22:28:02,102 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:01" (1/1) ... [2023-11-23 22:28:02,108 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:01" (1/1) ... [2023-11-23 22:28:02,111 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:01" (1/1) ... [2023-11-23 22:28:02,114 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:01" (1/1) ... [2023-11-23 22:28:02,127 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 22:28:02,129 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 22:28:02,129 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 22:28:02,129 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 22:28:02,130 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:01" (1/1) ... [2023-11-23 22:28:02,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 22:28:02,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:28:02,170 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 22:28:02,204 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 22:28:02,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 22:28:02,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 22:28:02,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 22:28:02,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 22:28:02,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 22:28:02,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 22:28:02,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 22:28:02,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 22:28:02,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 22:28:02,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 22:28:02,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 22:28:02,222 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 22:28:02,222 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-23 22:28:02,222 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-23 22:28:02,223 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-23 22:28:02,223 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-23 22:28:02,223 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-11-23 22:28:02,224 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-11-23 22:28:02,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 22:28:02,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 22:28:02,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 22:28:02,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 22:28:02,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 22:28:02,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-23 22:28:02,227 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-23 22:28:02,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 22:28:02,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 22:28:02,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 22:28:02,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 22:28:02,230 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 22:28:02,451 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 22:28:02,454 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 22:28:03,175 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 22:28:03,840 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 22:28:03,840 INFO L309 CfgBuilder]: Removed 6 assume(true) statements. [2023-11-23 22:28:03,841 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:28:03 BoogieIcfgContainer [2023-11-23 22:28:03,841 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 22:28:03,844 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 22:28:03,844 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 22:28:03,848 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 22:28:03,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:28:01" (1/3) ... [2023-11-23 22:28:03,849 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@569c3b40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:28:03, skipping insertion in model container [2023-11-23 22:28:03,849 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:28:01" (2/3) ... [2023-11-23 22:28:03,851 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@569c3b40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:28:03, skipping insertion in model container [2023-11-23 22:28:03,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:28:03" (3/3) ... [2023-11-23 22:28:03,853 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-commit-1.wvr.c [2023-11-23 22:28:03,866 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 22:28:03,878 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 22:28:03,878 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 22 error locations. [2023-11-23 22:28:03,878 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 22:28:03,997 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-11-23 22:28:04,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 76 transitions, 173 flow [2023-11-23 22:28:04,074 INFO L124 PetriNetUnfolderBase]: 9/73 cut-off events. [2023-11-23 22:28:04,074 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-11-23 22:28:04,079 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 73 events. 9/73 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 223 event pairs, 0 based on Foata normal form. 0/42 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2023-11-23 22:28:04,079 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 76 transitions, 173 flow [2023-11-23 22:28:04,084 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 71 transitions, 157 flow [2023-11-23 22:28:04,094 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 22:28:04,101 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;@6390d963, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 22:28:04,102 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2023-11-23 22:28:04,106 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-23 22:28:04,106 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-11-23 22:28:04,106 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-23 22:28:04,107 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:28:04,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-11-23 22:28:04,108 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-11-23 22:28:04,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:28:04,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1090829, now seen corresponding path program 1 times [2023-11-23 22:28:04,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:28:04,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269302003] [2023-11-23 22:28:04,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:04,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:28:04,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:04,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:28:04,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:28:04,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269302003] [2023-11-23 22:28:04,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269302003] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:28:04,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:28:04,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:28:04,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034669927] [2023-11-23 22:28:04,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:28:04,511 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:28:04,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:28:04,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:28:04,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:28:04,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 76 [2023-11-23 22:28:04,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 71 transitions, 157 flow. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:04,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:28:04,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 76 [2023-11-23 22:28:04,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:28:06,228 INFO L124 PetriNetUnfolderBase]: 5015/7274 cut-off events. [2023-11-23 22:28:06,229 INFO L125 PetriNetUnfolderBase]: For 278/278 co-relation queries the response was YES. [2023-11-23 22:28:06,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14477 conditions, 7274 events. 5015/7274 cut-off events. For 278/278 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 41603 event pairs, 3855 based on Foata normal form. 1120/5692 useless extension candidates. Maximal degree in co-relation 13440. Up to 6901 conditions per place. [2023-11-23 22:28:06,302 INFO L140 encePairwiseOnDemand]: 49/76 looper letters, 50 selfloop transitions, 10 changer transitions 0/69 dead transitions. [2023-11-23 22:28:06,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 69 transitions, 273 flow [2023-11-23 22:28:06,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:28:06,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 22:28:06,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 125 transitions. [2023-11-23 22:28:06,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41118421052631576 [2023-11-23 22:28:06,317 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 125 transitions. [2023-11-23 22:28:06,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 125 transitions. [2023-11-23 22:28:06,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:28:06,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 125 transitions. [2023-11-23 22:28:06,324 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:06,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:06,329 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:06,331 INFO L175 Difference]: Start difference. First operand has 72 places, 71 transitions, 157 flow. Second operand 4 states and 125 transitions. [2023-11-23 22:28:06,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 69 transitions, 273 flow [2023-11-23 22:28:06,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 69 transitions, 264 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-11-23 22:28:06,346 INFO L231 Difference]: Finished difference. Result has 65 places, 69 transitions, 214 flow [2023-11-23 22:28:06,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=214, PETRI_PLACES=65, PETRI_TRANSITIONS=69} [2023-11-23 22:28:06,353 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -7 predicate places. [2023-11-23 22:28:06,354 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 69 transitions, 214 flow [2023-11-23 22:28:06,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:06,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:28:06,355 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-11-23 22:28:06,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 22:28:06,356 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-11-23 22:28:06,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:28:06,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1861758878, now seen corresponding path program 1 times [2023-11-23 22:28:06,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:28:06,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886994388] [2023-11-23 22:28:06,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:06,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:28:06,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:06,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:28:06,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:28:06,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886994388] [2023-11-23 22:28:06,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886994388] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:28:06,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970817250] [2023-11-23 22:28:06,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:06,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:28:06,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:28:06,596 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:28:06,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 22:28:06,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:06,737 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 22:28:06,742 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:28:06,805 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:28:06,805 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:28:06,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970817250] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:28:06,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 22:28:06,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2023-11-23 22:28:06,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377648691] [2023-11-23 22:28:06,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:28:06,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 22:28:06,814 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:28:06,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 22:28:06,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 22:28:06,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 76 [2023-11-23 22:28:06,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 69 transitions, 214 flow. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:06,850 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:28:06,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 76 [2023-11-23 22:28:06,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:28:08,266 INFO L124 PetriNetUnfolderBase]: 5015/7271 cut-off events. [2023-11-23 22:28:08,273 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2023-11-23 22:28:08,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14418 conditions, 7271 events. 5015/7271 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 41711 event pairs, 3855 based on Foata normal form. 3/4577 useless extension candidates. Maximal degree in co-relation 14345. Up to 6886 conditions per place. [2023-11-23 22:28:08,344 INFO L140 encePairwiseOnDemand]: 63/76 looper letters, 40 selfloop transitions, 17 changer transitions 0/66 dead transitions. [2023-11-23 22:28:08,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 66 transitions, 316 flow [2023-11-23 22:28:08,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 22:28:08,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-23 22:28:08,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 132 transitions. [2023-11-23 22:28:08,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2894736842105263 [2023-11-23 22:28:08,351 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 132 transitions. [2023-11-23 22:28:08,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 132 transitions. [2023-11-23 22:28:08,354 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:28:08,354 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 132 transitions. [2023-11-23 22:28:08,358 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 22.0) internal successors, (132), 6 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:08,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 76.0) internal successors, (532), 7 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:08,360 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 76.0) internal successors, (532), 7 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:08,360 INFO L175 Difference]: Start difference. First operand has 65 places, 69 transitions, 214 flow. Second operand 6 states and 132 transitions. [2023-11-23 22:28:08,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 66 transitions, 316 flow [2023-11-23 22:28:08,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 66 transitions, 316 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-23 22:28:08,368 INFO L231 Difference]: Finished difference. Result has 67 places, 66 transitions, 236 flow [2023-11-23 22:28:08,368 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=236, PETRI_PLACES=67, PETRI_TRANSITIONS=66} [2023-11-23 22:28:08,369 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -5 predicate places. [2023-11-23 22:28:08,369 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 66 transitions, 236 flow [2023-11-23 22:28:08,370 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:08,370 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:28:08,370 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1] [2023-11-23 22:28:08,395 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-23 22:28:08,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:28:08,584 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-11-23 22:28:08,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:28:08,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1879949270, now seen corresponding path program 1 times [2023-11-23 22:28:08,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:28:08,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471225916] [2023-11-23 22:28:08,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:08,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:28:08,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:08,693 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:28:08,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:28:08,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471225916] [2023-11-23 22:28:08,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471225916] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:28:08,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1739906158] [2023-11-23 22:28:08,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:08,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:28:08,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:28:08,696 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:28:08,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 22:28:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:08,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 22:28:08,839 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:28:08,867 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:28:08,867 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:28:08,912 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:28:08,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1739906158] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:28:08,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:28:08,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-11-23 22:28:08,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088158214] [2023-11-23 22:28:08,914 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:28:08,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-23 22:28:08,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:28:08,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-23 22:28:08,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2023-11-23 22:28:08,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 76 [2023-11-23 22:28:08,953 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 66 transitions, 236 flow. Second operand has 12 states, 12 states have (on average 13.083333333333334) internal successors, (157), 12 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:08,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:28:08,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 76 [2023-11-23 22:28:08,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:28:10,497 INFO L124 PetriNetUnfolderBase]: 5024/7307 cut-off events. [2023-11-23 22:28:10,497 INFO L125 PetriNetUnfolderBase]: For 134/134 co-relation queries the response was YES. [2023-11-23 22:28:10,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14559 conditions, 7307 events. 5024/7307 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 531. Compared 42063 event pairs, 3855 based on Foata normal form. 9/4619 useless extension candidates. Maximal degree in co-relation 14347. Up to 6901 conditions per place. [2023-11-23 22:28:10,559 INFO L140 encePairwiseOnDemand]: 63/76 looper letters, 47 selfloop transitions, 37 changer transitions 0/93 dead transitions. [2023-11-23 22:28:10,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 93 transitions, 578 flow [2023-11-23 22:28:10,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 22:28:10,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-11-23 22:28:10,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 213 transitions. [2023-11-23 22:28:10,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2802631578947368 [2023-11-23 22:28:10,563 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 213 transitions. [2023-11-23 22:28:10,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 213 transitions. [2023-11-23 22:28:10,563 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:28:10,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 213 transitions. [2023-11-23 22:28:10,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 21.3) internal successors, (213), 10 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:10,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 76.0) internal successors, (836), 11 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:10,569 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 76.0) internal successors, (836), 11 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:10,570 INFO L175 Difference]: Start difference. First operand has 67 places, 66 transitions, 236 flow. Second operand 10 states and 213 transitions. [2023-11-23 22:28:10,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 93 transitions, 578 flow [2023-11-23 22:28:10,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 93 transitions, 495 flow, removed 16 selfloop flow, removed 5 redundant places. [2023-11-23 22:28:10,578 INFO L231 Difference]: Finished difference. Result has 74 places, 93 transitions, 451 flow [2023-11-23 22:28:10,578 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=451, PETRI_PLACES=74, PETRI_TRANSITIONS=93} [2023-11-23 22:28:10,580 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 2 predicate places. [2023-11-23 22:28:10,580 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 93 transitions, 451 flow [2023-11-23 22:28:10,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.083333333333334) internal successors, (157), 12 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:10,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:28:10,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:28:10,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 22:28:10,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-23 22:28:10,802 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-11-23 22:28:10,803 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:28:10,803 INFO L85 PathProgramCache]: Analyzing trace with hash -448207103, now seen corresponding path program 1 times [2023-11-23 22:28:10,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:28:10,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240751979] [2023-11-23 22:28:10,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:10,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:28:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:10,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:28:10,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:28:10,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240751979] [2023-11-23 22:28:10,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240751979] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:28:10,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:28:10,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-23 22:28:10,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872430570] [2023-11-23 22:28:10,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:28:10,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:28:10,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:28:10,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:28:10,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:28:10,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 76 [2023-11-23 22:28:10,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 93 transitions, 451 flow. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:10,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:28:10,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 76 [2023-11-23 22:28:10,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:28:12,067 INFO L124 PetriNetUnfolderBase]: 5790/8405 cut-off events. [2023-11-23 22:28:12,067 INFO L125 PetriNetUnfolderBase]: For 207/207 co-relation queries the response was YES. [2023-11-23 22:28:12,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16838 conditions, 8405 events. 5790/8405 cut-off events. For 207/207 co-relation queries the response was YES. Maximal size of possible extension queue 544. Compared 50117 event pairs, 1667 based on Foata normal form. 86/5504 useless extension candidates. Maximal degree in co-relation 16740. Up to 6843 conditions per place. [2023-11-23 22:28:12,142 INFO L140 encePairwiseOnDemand]: 71/76 looper letters, 100 selfloop transitions, 3 changer transitions 0/115 dead transitions. [2023-11-23 22:28:12,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 115 transitions, 705 flow [2023-11-23 22:28:12,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:28:12,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 22:28:12,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2023-11-23 22:28:12,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5394736842105263 [2023-11-23 22:28:12,146 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 123 transitions. [2023-11-23 22:28:12,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 123 transitions. [2023-11-23 22:28:12,146 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:28:12,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 123 transitions. [2023-11-23 22:28:12,147 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:12,148 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:12,150 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:12,150 INFO L175 Difference]: Start difference. First operand has 74 places, 93 transitions, 451 flow. Second operand 3 states and 123 transitions. [2023-11-23 22:28:12,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 115 transitions, 705 flow [2023-11-23 22:28:12,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 115 transitions, 668 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-11-23 22:28:12,157 INFO L231 Difference]: Finished difference. Result has 75 places, 95 transitions, 435 flow [2023-11-23 22:28:12,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=414, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=435, PETRI_PLACES=75, PETRI_TRANSITIONS=95} [2023-11-23 22:28:12,160 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 3 predicate places. [2023-11-23 22:28:12,160 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 95 transitions, 435 flow [2023-11-23 22:28:12,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:12,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:28:12,161 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:28:12,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 22:28:12,161 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-11-23 22:28:12,162 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:28:12,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1416382920, now seen corresponding path program 1 times [2023-11-23 22:28:12,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:28:12,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193493444] [2023-11-23 22:28:12,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:12,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:28:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:12,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:28:12,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:28:12,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193493444] [2023-11-23 22:28:12,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193493444] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:28:12,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:28:12,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:28:12,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666877692] [2023-11-23 22:28:12,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:28:12,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:28:12,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:28:12,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:28:12,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:28:12,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 76 [2023-11-23 22:28:12,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 95 transitions, 435 flow. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:12,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:28:12,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 76 [2023-11-23 22:28:12,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:28:13,510 INFO L124 PetriNetUnfolderBase]: 4950/7329 cut-off events. [2023-11-23 22:28:13,510 INFO L125 PetriNetUnfolderBase]: For 457/457 co-relation queries the response was YES. [2023-11-23 22:28:13,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15384 conditions, 7329 events. 4950/7329 cut-off events. For 457/457 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 42918 event pairs, 1943 based on Foata normal form. 170/5450 useless extension candidates. Maximal degree in co-relation 15289. Up to 4901 conditions per place. [2023-11-23 22:28:13,617 INFO L140 encePairwiseOnDemand]: 72/76 looper letters, 102 selfloop transitions, 2 changer transitions 0/116 dead transitions. [2023-11-23 22:28:13,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 116 transitions, 690 flow [2023-11-23 22:28:13,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:28:13,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 22:28:13,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 123 transitions. [2023-11-23 22:28:13,619 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5394736842105263 [2023-11-23 22:28:13,619 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 123 transitions. [2023-11-23 22:28:13,620 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 123 transitions. [2023-11-23 22:28:13,620 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:28:13,620 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 123 transitions. [2023-11-23 22:28:13,621 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:13,622 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:13,623 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:13,623 INFO L175 Difference]: Start difference. First operand has 75 places, 95 transitions, 435 flow. Second operand 3 states and 123 transitions. [2023-11-23 22:28:13,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 116 transitions, 690 flow [2023-11-23 22:28:13,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 116 transitions, 688 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 22:28:13,629 INFO L231 Difference]: Finished difference. Result has 77 places, 95 transitions, 442 flow [2023-11-23 22:28:13,629 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=428, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=442, PETRI_PLACES=77, PETRI_TRANSITIONS=95} [2023-11-23 22:28:13,630 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 5 predicate places. [2023-11-23 22:28:13,630 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 95 transitions, 442 flow [2023-11-23 22:28:13,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:13,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:28:13,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:28:13,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 22:28:13,632 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-11-23 22:28:13,632 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:28:13,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1935869438, now seen corresponding path program 1 times [2023-11-23 22:28:13,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:28:13,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039179231] [2023-11-23 22:28:13,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:13,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:28:13,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:13,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:28:13,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:28:13,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039179231] [2023-11-23 22:28:13,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039179231] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:28:13,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:28:13,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:28:13,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924824474] [2023-11-23 22:28:13,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:28:13,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:28:13,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:28:13,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:28:13,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:28:13,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 76 [2023-11-23 22:28:13,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 95 transitions, 442 flow. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:13,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:28:13,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 76 [2023-11-23 22:28:13,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:28:15,118 INFO L124 PetriNetUnfolderBase]: 5292/7972 cut-off events. [2023-11-23 22:28:15,119 INFO L125 PetriNetUnfolderBase]: For 701/701 co-relation queries the response was YES. [2023-11-23 22:28:15,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17225 conditions, 7972 events. 5292/7972 cut-off events. For 701/701 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 47856 event pairs, 4560 based on Foata normal form. 84/6020 useless extension candidates. Maximal degree in co-relation 17072. Up to 7049 conditions per place. [2023-11-23 22:28:15,182 INFO L140 encePairwiseOnDemand]: 71/76 looper letters, 105 selfloop transitions, 3 changer transitions 24/144 dead transitions. [2023-11-23 22:28:15,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 144 transitions, 939 flow [2023-11-23 22:28:15,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 22:28:15,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-23 22:28:15,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 147 transitions. [2023-11-23 22:28:15,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48355263157894735 [2023-11-23 22:28:15,185 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 147 transitions. [2023-11-23 22:28:15,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 147 transitions. [2023-11-23 22:28:15,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:28:15,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 147 transitions. [2023-11-23 22:28:15,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:15,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:15,187 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 76.0) internal successors, (380), 5 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:15,188 INFO L175 Difference]: Start difference. First operand has 77 places, 95 transitions, 442 flow. Second operand 4 states and 147 transitions. [2023-11-23 22:28:15,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 144 transitions, 939 flow [2023-11-23 22:28:15,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 144 transitions, 937 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 22:28:15,194 INFO L231 Difference]: Finished difference. Result has 80 places, 95 transitions, 451 flow [2023-11-23 22:28:15,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=440, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=451, PETRI_PLACES=80, PETRI_TRANSITIONS=95} [2023-11-23 22:28:15,195 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 8 predicate places. [2023-11-23 22:28:15,195 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 95 transitions, 451 flow [2023-11-23 22:28:15,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:15,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:28:15,196 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 4, 1, 1] [2023-11-23 22:28:15,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 22:28:15,197 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-11-23 22:28:15,197 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:28:15,197 INFO L85 PathProgramCache]: Analyzing trace with hash 497867039, now seen corresponding path program 2 times [2023-11-23 22:28:15,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:28:15,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146213778] [2023-11-23 22:28:15,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:15,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:28:15,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:15,411 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:28:15,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:28:15,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146213778] [2023-11-23 22:28:15,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146213778] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:28:15,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407789024] [2023-11-23 22:28:15,413 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 22:28:15,413 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:28:15,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:28:15,417 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:28:15,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 22:28:15,548 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 22:28:15,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 22:28:15,550 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 22:28:15,552 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:28:15,611 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-23 22:28:15,612 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:28:15,664 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-11-23 22:28:15,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407789024] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:28:15,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:28:15,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 2, 2] total 12 [2023-11-23 22:28:15,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117994336] [2023-11-23 22:28:15,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:28:15,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-23 22:28:15,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:28:15,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-23 22:28:15,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2023-11-23 22:28:15,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 76 [2023-11-23 22:28:15,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 95 transitions, 451 flow. Second operand has 14 states, 14 states have (on average 13.142857142857142) internal successors, (184), 14 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:15,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:28:15,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 76 [2023-11-23 22:28:15,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:28:17,253 INFO L124 PetriNetUnfolderBase]: 5297/7995 cut-off events. [2023-11-23 22:28:17,254 INFO L125 PetriNetUnfolderBase]: For 1096/1096 co-relation queries the response was YES. [2023-11-23 22:28:17,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17568 conditions, 7995 events. 5297/7995 cut-off events. For 1096/1096 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 48540 event pairs, 4560 based on Foata normal form. 10/5953 useless extension candidates. Maximal degree in co-relation 17371. Up to 7559 conditions per place. [2023-11-23 22:28:17,312 INFO L140 encePairwiseOnDemand]: 63/76 looper letters, 38 selfloop transitions, 53 changer transitions 1/101 dead transitions. [2023-11-23 22:28:17,313 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 101 transitions, 664 flow [2023-11-23 22:28:17,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 22:28:17,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-11-23 22:28:17,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 264 transitions. [2023-11-23 22:28:17,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.24812030075187969 [2023-11-23 22:28:17,316 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 264 transitions. [2023-11-23 22:28:17,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 264 transitions. [2023-11-23 22:28:17,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:28:17,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 264 transitions. [2023-11-23 22:28:17,318 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 18.857142857142858) internal successors, (264), 14 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:17,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 76.0) internal successors, (1140), 15 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:17,320 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 76.0) internal successors, (1140), 15 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:17,321 INFO L175 Difference]: Start difference. First operand has 80 places, 95 transitions, 451 flow. Second operand 14 states and 264 transitions. [2023-11-23 22:28:17,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 101 transitions, 664 flow [2023-11-23 22:28:17,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 101 transitions, 624 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-11-23 22:28:17,326 INFO L231 Difference]: Finished difference. Result has 85 places, 100 transitions, 541 flow [2023-11-23 22:28:17,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=387, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=541, PETRI_PLACES=85, PETRI_TRANSITIONS=100} [2023-11-23 22:28:17,327 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 13 predicate places. [2023-11-23 22:28:17,328 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 100 transitions, 541 flow [2023-11-23 22:28:17,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 13.142857142857142) internal successors, (184), 14 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:17,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:28:17,328 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:28:17,349 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 22:28:17,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-23 22:28:17,549 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-11-23 22:28:17,550 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:28:17,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1858715415, now seen corresponding path program 1 times [2023-11-23 22:28:17,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:28:17,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363669811] [2023-11-23 22:28:17,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:17,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:28:17,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:17,758 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 22:28:17,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:28:17,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363669811] [2023-11-23 22:28:17,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1363669811] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:28:17,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1141486197] [2023-11-23 22:28:17,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:17,760 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:28:17,760 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:28:17,761 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:28:17,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 22:28:17,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:17,919 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 22:28:17,921 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:28:17,962 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 22:28:17,962 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:28:17,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1141486197] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:28:17,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 22:28:17,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [4] total 5 [2023-11-23 22:28:17,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143654366] [2023-11-23 22:28:17,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:28:17,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:28:17,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:28:17,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:28:17,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 22:28:17,971 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 76 [2023-11-23 22:28:17,972 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 100 transitions, 541 flow. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:17,972 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:28:17,972 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 76 [2023-11-23 22:28:17,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:28:18,534 INFO L124 PetriNetUnfolderBase]: 3326/5021 cut-off events. [2023-11-23 22:28:18,535 INFO L125 PetriNetUnfolderBase]: For 779/779 co-relation queries the response was YES. [2023-11-23 22:28:18,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10898 conditions, 5021 events. 3326/5021 cut-off events. For 779/779 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 28941 event pairs, 2785 based on Foata normal form. 362/4144 useless extension candidates. Maximal degree in co-relation 10611. Up to 4771 conditions per place. [2023-11-23 22:28:18,571 INFO L140 encePairwiseOnDemand]: 71/76 looper letters, 86 selfloop transitions, 1 changer transitions 0/96 dead transitions. [2023-11-23 22:28:18,572 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 96 transitions, 703 flow [2023-11-23 22:28:18,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:28:18,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 22:28:18,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 99 transitions. [2023-11-23 22:28:18,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4342105263157895 [2023-11-23 22:28:18,573 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 99 transitions. [2023-11-23 22:28:18,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 99 transitions. [2023-11-23 22:28:18,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:28:18,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 99 transitions. [2023-11-23 22:28:18,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:18,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:18,575 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:18,576 INFO L175 Difference]: Start difference. First operand has 85 places, 100 transitions, 541 flow. Second operand 3 states and 99 transitions. [2023-11-23 22:28:18,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 96 transitions, 703 flow [2023-11-23 22:28:18,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 96 transitions, 510 flow, removed 15 selfloop flow, removed 13 redundant places. [2023-11-23 22:28:18,581 INFO L231 Difference]: Finished difference. Result has 69 places, 96 transitions, 338 flow [2023-11-23 22:28:18,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=338, PETRI_PLACES=69, PETRI_TRANSITIONS=96} [2023-11-23 22:28:18,582 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -3 predicate places. [2023-11-23 22:28:18,582 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 96 transitions, 338 flow [2023-11-23 22:28:18,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:18,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:28:18,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:28:18,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 22:28:18,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:28:18,805 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-11-23 22:28:18,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:28:18,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1785604194, now seen corresponding path program 1 times [2023-11-23 22:28:18,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:28:18,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145767116] [2023-11-23 22:28:18,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:18,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:28:18,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:18,892 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 22:28:18,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:28:18,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145767116] [2023-11-23 22:28:18,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145767116] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:28:18,893 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:28:18,893 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 22:28:18,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667355766] [2023-11-23 22:28:18,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:28:18,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:28:18,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:28:18,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:28:18,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 22:28:18,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 76 [2023-11-23 22:28:18,896 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 96 transitions, 338 flow. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:18,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:28:18,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 76 [2023-11-23 22:28:18,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:28:19,480 INFO L124 PetriNetUnfolderBase]: 2717/4026 cut-off events. [2023-11-23 22:28:19,480 INFO L125 PetriNetUnfolderBase]: For 469/469 co-relation queries the response was YES. [2023-11-23 22:28:19,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8791 conditions, 4026 events. 2717/4026 cut-off events. For 469/469 co-relation queries the response was YES. Maximal size of possible extension queue 228. Compared 21179 event pairs, 1124 based on Foata normal form. 100/3081 useless extension candidates. Maximal degree in co-relation 8778. Up to 3057 conditions per place. [2023-11-23 22:28:19,502 INFO L140 encePairwiseOnDemand]: 72/76 looper letters, 99 selfloop transitions, 2 changer transitions 8/118 dead transitions. [2023-11-23 22:28:19,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 118 transitions, 610 flow [2023-11-23 22:28:19,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:28:19,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 22:28:19,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 121 transitions. [2023-11-23 22:28:19,504 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5307017543859649 [2023-11-23 22:28:19,504 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 121 transitions. [2023-11-23 22:28:19,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 121 transitions. [2023-11-23 22:28:19,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:28:19,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 121 transitions. [2023-11-23 22:28:19,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 40.333333333333336) internal successors, (121), 3 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:19,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:19,507 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:19,507 INFO L175 Difference]: Start difference. First operand has 69 places, 96 transitions, 338 flow. Second operand 3 states and 121 transitions. [2023-11-23 22:28:19,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 118 transitions, 610 flow [2023-11-23 22:28:19,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 118 transitions, 609 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 22:28:19,511 INFO L231 Difference]: Finished difference. Result has 71 places, 97 transitions, 351 flow [2023-11-23 22:28:19,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=337, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=351, PETRI_PLACES=71, PETRI_TRANSITIONS=97} [2023-11-23 22:28:19,512 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -1 predicate places. [2023-11-23 22:28:19,513 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 97 transitions, 351 flow [2023-11-23 22:28:19,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:19,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:28:19,513 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] [2023-11-23 22:28:19,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 22:28:19,514 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-11-23 22:28:19,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:28:19,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1614033301, now seen corresponding path program 1 times [2023-11-23 22:28:19,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:28:19,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769033875] [2023-11-23 22:28:19,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:19,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:28:19,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:19,652 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 22:28:19,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:28:19,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769033875] [2023-11-23 22:28:19,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769033875] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:28:19,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:28:19,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:28:19,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039430712] [2023-11-23 22:28:19,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:28:19,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:28:19,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:28:19,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:28:19,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:28:19,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 76 [2023-11-23 22:28:19,656 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 97 transitions, 351 flow. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:19,656 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:28:19,656 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 76 [2023-11-23 22:28:19,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:28:20,250 INFO L124 PetriNetUnfolderBase]: 3139/4832 cut-off events. [2023-11-23 22:28:20,250 INFO L125 PetriNetUnfolderBase]: For 627/627 co-relation queries the response was YES. [2023-11-23 22:28:20,261 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10763 conditions, 4832 events. 3139/4832 cut-off events. For 627/627 co-relation queries the response was YES. Maximal size of possible extension queue 237. Compared 27694 event pairs, 2645 based on Foata normal form. 16/3728 useless extension candidates. Maximal degree in co-relation 10748. Up to 3877 conditions per place. [2023-11-23 22:28:20,278 INFO L140 encePairwiseOnDemand]: 67/76 looper letters, 72 selfloop transitions, 15 changer transitions 22/118 dead transitions. [2023-11-23 22:28:20,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 118 transitions, 621 flow [2023-11-23 22:28:20,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:28:20,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-23 22:28:20,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 162 transitions. [2023-11-23 22:28:20,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263157894736842 [2023-11-23 22:28:20,281 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 162 transitions. [2023-11-23 22:28:20,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 162 transitions. [2023-11-23 22:28:20,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:28:20,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 162 transitions. [2023-11-23 22:28:20,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 32.4) internal successors, (162), 5 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:20,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:20,283 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:20,284 INFO L175 Difference]: Start difference. First operand has 71 places, 97 transitions, 351 flow. Second operand 5 states and 162 transitions. [2023-11-23 22:28:20,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 118 transitions, 621 flow [2023-11-23 22:28:20,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 118 transitions, 619 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 22:28:20,288 INFO L231 Difference]: Finished difference. Result has 75 places, 96 transitions, 391 flow [2023-11-23 22:28:20,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=349, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=391, PETRI_PLACES=75, PETRI_TRANSITIONS=96} [2023-11-23 22:28:20,289 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 3 predicate places. [2023-11-23 22:28:20,290 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 96 transitions, 391 flow [2023-11-23 22:28:20,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:20,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:28:20,290 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] [2023-11-23 22:28:20,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 22:28:20,291 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-11-23 22:28:20,291 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:28:20,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1733494556, now seen corresponding path program 1 times [2023-11-23 22:28:20,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:28:20,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002183411] [2023-11-23 22:28:20,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:20,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:28:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:20,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-23 22:28:20,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:28:20,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002183411] [2023-11-23 22:28:20,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002183411] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:28:20,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776231506] [2023-11-23 22:28:20,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:20,514 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:28:20,514 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:28:20,515 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:28:20,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 22:28:20,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:20,691 INFO L262 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 22:28:20,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:28:20,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 22:28:20,744 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:28:20,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776231506] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:28:20,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 22:28:20,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2023-11-23 22:28:20,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208750752] [2023-11-23 22:28:20,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:28:20,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:28:20,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:28:20,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:28:20,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 22:28:20,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 76 [2023-11-23 22:28:20,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 96 transitions, 391 flow. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:20,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:28:20,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 76 [2023-11-23 22:28:20,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:28:21,208 INFO L124 PetriNetUnfolderBase]: 2211/3386 cut-off events. [2023-11-23 22:28:21,209 INFO L125 PetriNetUnfolderBase]: For 592/592 co-relation queries the response was YES. [2023-11-23 22:28:21,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7573 conditions, 3386 events. 2211/3386 cut-off events. For 592/592 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 18414 event pairs, 1785 based on Foata normal form. 80/2757 useless extension candidates. Maximal degree in co-relation 7556. Up to 3202 conditions per place. [2023-11-23 22:28:21,232 INFO L140 encePairwiseOnDemand]: 73/76 looper letters, 84 selfloop transitions, 1 changer transitions 0/94 dead transitions. [2023-11-23 22:28:21,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 94 transitions, 553 flow [2023-11-23 22:28:21,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:28:21,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 22:28:21,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 95 transitions. [2023-11-23 22:28:21,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2023-11-23 22:28:21,234 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 95 transitions. [2023-11-23 22:28:21,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 95 transitions. [2023-11-23 22:28:21,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:28:21,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 95 transitions. [2023-11-23 22:28:21,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 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) [2023-11-23 22:28:21,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:21,236 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:21,237 INFO L175 Difference]: Start difference. First operand has 75 places, 96 transitions, 391 flow. Second operand 3 states and 95 transitions. [2023-11-23 22:28:21,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 94 transitions, 553 flow [2023-11-23 22:28:21,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 94 transitions, 521 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-11-23 22:28:21,241 INFO L231 Difference]: Finished difference. Result has 72 places, 94 transitions, 353 flow [2023-11-23 22:28:21,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=351, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=353, PETRI_PLACES=72, PETRI_TRANSITIONS=94} [2023-11-23 22:28:21,242 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 0 predicate places. [2023-11-23 22:28:21,242 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 94 transitions, 353 flow [2023-11-23 22:28:21,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:21,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:28:21,243 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] [2023-11-23 22:28:21,270 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 22:28:21,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:28:21,465 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-11-23 22:28:21,466 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:28:21,466 INFO L85 PathProgramCache]: Analyzing trace with hash 559079335, now seen corresponding path program 1 times [2023-11-23 22:28:21,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:28:21,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503482262] [2023-11-23 22:28:21,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:21,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:28:21,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:21,639 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 22:28:21,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:28:21,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503482262] [2023-11-23 22:28:21,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503482262] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:28:21,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 22:28:21,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 22:28:21,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379634813] [2023-11-23 22:28:21,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:28:21,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 22:28:21,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:28:21,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 22:28:21,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 22:28:21,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 76 [2023-11-23 22:28:21,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 94 transitions, 353 flow. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:21,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:28:21,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 76 [2023-11-23 22:28:21,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:28:22,400 INFO L124 PetriNetUnfolderBase]: 2674/4187 cut-off events. [2023-11-23 22:28:22,401 INFO L125 PetriNetUnfolderBase]: For 555/555 co-relation queries the response was YES. [2023-11-23 22:28:22,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9216 conditions, 4187 events. 2674/4187 cut-off events. For 555/555 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 23695 event pairs, 2236 based on Foata normal form. 24/3316 useless extension candidates. Maximal degree in co-relation 9200. Up to 3183 conditions per place. [2023-11-23 22:28:22,425 INFO L140 encePairwiseOnDemand]: 68/76 looper letters, 76 selfloop transitions, 8 changer transitions 43/136 dead transitions. [2023-11-23 22:28:22,425 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 136 transitions, 737 flow [2023-11-23 22:28:22,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 22:28:22,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-23 22:28:22,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 166 transitions. [2023-11-23 22:28:22,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4368421052631579 [2023-11-23 22:28:22,428 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 166 transitions. [2023-11-23 22:28:22,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 166 transitions. [2023-11-23 22:28:22,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:28:22,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 166 transitions. [2023-11-23 22:28:22,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 33.2) internal successors, (166), 5 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:22,431 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:22,431 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 76.0) internal successors, (456), 6 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:22,432 INFO L175 Difference]: Start difference. First operand has 72 places, 94 transitions, 353 flow. Second operand 5 states and 166 transitions. [2023-11-23 22:28:22,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 136 transitions, 737 flow [2023-11-23 22:28:22,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 136 transitions, 736 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-23 22:28:22,437 INFO L231 Difference]: Finished difference. Result has 77 places, 93 transitions, 378 flow [2023-11-23 22:28:22,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=378, PETRI_PLACES=77, PETRI_TRANSITIONS=93} [2023-11-23 22:28:22,439 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 5 predicate places. [2023-11-23 22:28:22,439 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 93 transitions, 378 flow [2023-11-23 22:28:22,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:22,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:28:22,440 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] [2023-11-23 22:28:22,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-23 22:28:22,440 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-11-23 22:28:22,440 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:28:22,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1144852368, now seen corresponding path program 1 times [2023-11-23 22:28:22,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:28:22,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889487929] [2023-11-23 22:28:22,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:22,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:28:22,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:22,768 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 22:28:22,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:28:22,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889487929] [2023-11-23 22:28:22,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889487929] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:28:22,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682688199] [2023-11-23 22:28:22,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:22,770 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:28:22,770 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:28:22,771 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:28:22,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 22:28:22,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:22,968 INFO L262 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 22:28:22,971 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:28:23,121 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 22:28:23,121 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 22:28:23,306 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 22:28:23,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682688199] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 22:28:23,307 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-23 22:28:23,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 6] total 15 [2023-11-23 22:28:23,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416967096] [2023-11-23 22:28:23,308 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-23 22:28:23,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-23 22:28:23,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:28:23,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-23 22:28:23,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-11-23 22:28:23,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 76 [2023-11-23 22:28:23,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 93 transitions, 378 flow. Second operand has 15 states, 15 states have (on average 15.4) internal successors, (231), 15 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:23,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:28:23,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 76 [2023-11-23 22:28:23,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:28:25,133 INFO L124 PetriNetUnfolderBase]: 3720/5994 cut-off events. [2023-11-23 22:28:25,133 INFO L125 PetriNetUnfolderBase]: For 893/893 co-relation queries the response was YES. [2023-11-23 22:28:25,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13190 conditions, 5994 events. 3720/5994 cut-off events. For 893/893 co-relation queries the response was YES. Maximal size of possible extension queue 280. Compared 37779 event pairs, 2082 based on Foata normal form. 146/4841 useless extension candidates. Maximal degree in co-relation 13171. Up to 2609 conditions per place. [2023-11-23 22:28:25,160 INFO L140 encePairwiseOnDemand]: 60/76 looper letters, 47 selfloop transitions, 41 changer transitions 193/290 dead transitions. [2023-11-23 22:28:25,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 290 transitions, 1538 flow [2023-11-23 22:28:25,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-23 22:28:25,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-11-23 22:28:25,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 477 transitions. [2023-11-23 22:28:25,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.272883295194508 [2023-11-23 22:28:25,165 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 477 transitions. [2023-11-23 22:28:25,165 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 477 transitions. [2023-11-23 22:28:25,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:28:25,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 477 transitions. [2023-11-23 22:28:25,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 20.73913043478261) internal successors, (477), 23 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:25,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 76.0) internal successors, (1824), 24 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:25,174 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 76.0) internal successors, (1824), 24 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:25,174 INFO L175 Difference]: Start difference. First operand has 77 places, 93 transitions, 378 flow. Second operand 23 states and 477 transitions. [2023-11-23 22:28:25,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 290 transitions, 1538 flow [2023-11-23 22:28:25,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 290 transitions, 1502 flow, removed 7 selfloop flow, removed 5 redundant places. [2023-11-23 22:28:25,186 INFO L231 Difference]: Finished difference. Result has 99 places, 91 transitions, 439 flow [2023-11-23 22:28:25,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=352, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=439, PETRI_PLACES=99, PETRI_TRANSITIONS=91} [2023-11-23 22:28:25,187 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 27 predicate places. [2023-11-23 22:28:25,188 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 91 transitions, 439 flow [2023-11-23 22:28:25,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 15.4) internal successors, (231), 15 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:25,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-23 22:28:25,188 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:28:25,215 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 22:28:25,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-23 22:28:25,410 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 38 more)] === [2023-11-23 22:28:25,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 22:28:25,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1754522670, now seen corresponding path program 2 times [2023-11-23 22:28:25,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 22:28:25,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371999840] [2023-11-23 22:28:25,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 22:28:25,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 22:28:25,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 22:28:25,822 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-23 22:28:25,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 22:28:25,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371999840] [2023-11-23 22:28:25,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371999840] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 22:28:25,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1116437743] [2023-11-23 22:28:25,824 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 22:28:25,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:28:25,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/z3 [2023-11-23 22:28:25,829 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 22:28:25,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 22:28:26,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 22:28:26,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 22:28:26,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-23 22:28:26,013 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 22:28:26,058 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-23 22:28:26,059 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 22:28:26,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1116437743] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 22:28:26,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 22:28:26,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2023-11-23 22:28:26,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517323688] [2023-11-23 22:28:26,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 22:28:26,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 22:28:26,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 22:28:26,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 22:28:26,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-23 22:28:26,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 76 [2023-11-23 22:28:26,063 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 91 transitions, 439 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:26,063 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-23 22:28:26,063 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 76 [2023-11-23 22:28:26,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-23 22:28:26,410 INFO L124 PetriNetUnfolderBase]: 1744/2723 cut-off events. [2023-11-23 22:28:26,411 INFO L125 PetriNetUnfolderBase]: For 1314/1314 co-relation queries the response was YES. [2023-11-23 22:28:26,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6628 conditions, 2723 events. 1744/2723 cut-off events. For 1314/1314 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 14402 event pairs, 1405 based on Foata normal form. 72/2285 useless extension candidates. Maximal degree in co-relation 6607. Up to 2553 conditions per place. [2023-11-23 22:28:26,418 INFO L140 encePairwiseOnDemand]: 73/76 looper letters, 0 selfloop transitions, 0 changer transitions 89/89 dead transitions. [2023-11-23 22:28:26,418 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 89 transitions, 589 flow [2023-11-23 22:28:26,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 22:28:26,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-23 22:28:26,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 93 transitions. [2023-11-23 22:28:26,419 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40789473684210525 [2023-11-23 22:28:26,419 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 93 transitions. [2023-11-23 22:28:26,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 93 transitions. [2023-11-23 22:28:26,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-23 22:28:26,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 93 transitions. [2023-11-23 22:28:26,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:26,421 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:26,421 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:26,421 INFO L175 Difference]: Start difference. First operand has 99 places, 91 transitions, 439 flow. Second operand 3 states and 93 transitions. [2023-11-23 22:28:26,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 89 transitions, 589 flow [2023-11-23 22:28:26,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 89 transitions, 563 flow, removed 5 selfloop flow, removed 9 redundant places. [2023-11-23 22:28:26,428 INFO L231 Difference]: Finished difference. Result has 80 places, 0 transitions, 0 flow [2023-11-23 22:28:26,428 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=76, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=80, PETRI_TRANSITIONS=0} [2023-11-23 22:28:26,429 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 8 predicate places. [2023-11-23 22:28:26,429 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 0 transitions, 0 flow [2023-11-23 22:28:26,429 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-23 22:28:26,432 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 41 remaining) [2023-11-23 22:28:26,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (39 of 41 remaining) [2023-11-23 22:28:26,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (38 of 41 remaining) [2023-11-23 22:28:26,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (37 of 41 remaining) [2023-11-23 22:28:26,433 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 41 remaining) [2023-11-23 22:28:26,434 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 41 remaining) [2023-11-23 22:28:26,434 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 41 remaining) [2023-11-23 22:28:26,434 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 41 remaining) [2023-11-23 22:28:26,434 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 41 remaining) [2023-11-23 22:28:26,434 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 41 remaining) [2023-11-23 22:28:26,434 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 41 remaining) [2023-11-23 22:28:26,435 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 41 remaining) [2023-11-23 22:28:26,435 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 41 remaining) [2023-11-23 22:28:26,435 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 41 remaining) [2023-11-23 22:28:26,435 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 41 remaining) [2023-11-23 22:28:26,435 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 41 remaining) [2023-11-23 22:28:26,436 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 41 remaining) [2023-11-23 22:28:26,436 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 41 remaining) [2023-11-23 22:28:26,436 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 41 remaining) [2023-11-23 22:28:26,436 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 41 remaining) [2023-11-23 22:28:26,436 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 41 remaining) [2023-11-23 22:28:26,437 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 41 remaining) [2023-11-23 22:28:26,437 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 41 remaining) [2023-11-23 22:28:26,437 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 41 remaining) [2023-11-23 22:28:26,437 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 41 remaining) [2023-11-23 22:28:26,437 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 41 remaining) [2023-11-23 22:28:26,437 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 41 remaining) [2023-11-23 22:28:26,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 41 remaining) [2023-11-23 22:28:26,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 41 remaining) [2023-11-23 22:28:26,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 41 remaining) [2023-11-23 22:28:26,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 41 remaining) [2023-11-23 22:28:26,438 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 41 remaining) [2023-11-23 22:28:26,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 41 remaining) [2023-11-23 22:28:26,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 41 remaining) [2023-11-23 22:28:26,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 41 remaining) [2023-11-23 22:28:26,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 41 remaining) [2023-11-23 22:28:26,439 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 41 remaining) [2023-11-23 22:28:26,440 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 41 remaining) [2023-11-23 22:28:26,440 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 41 remaining) [2023-11-23 22:28:26,440 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 41 remaining) [2023-11-23 22:28:26,440 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 41 remaining) [2023-11-23 22:28:26,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-23 22:28:26,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 22:28:26,657 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 22:28:26,662 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-23 22:28:26,662 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-23 22:28:26,672 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 10:28:26 BasicIcfg [2023-11-23 22:28:26,672 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-23 22:28:26,674 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-23 22:28:26,674 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-23 22:28:26,674 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-23 22:28:26,675 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:28:03" (3/4) ... [2023-11-23 22:28:26,676 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-23 22:28:26,679 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-11-23 22:28:26,680 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-11-23 22:28:26,680 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-11-23 22:28:26,701 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 192 nodes and edges [2023-11-23 22:28:26,702 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 37 nodes and edges [2023-11-23 22:28:26,704 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2023-11-23 22:28:26,704 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-23 22:28:26,834 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/witness.graphml [2023-11-23 22:28:26,835 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/witness.yml [2023-11-23 22:28:26,835 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-23 22:28:26,836 INFO L158 Benchmark]: Toolchain (without parser) took 25222.55ms. Allocated memory was 195.0MB in the beginning and 2.0GB in the end (delta: 1.8GB). Free memory was 147.2MB in the beginning and 890.9MB in the end (delta: -743.8MB). Peak memory consumption was 1.0GB. Max. memory is 16.1GB. [2023-11-23 22:28:26,836 INFO L158 Benchmark]: CDTParser took 1.40ms. Allocated memory is still 151.0MB. Free memory is still 95.0MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-23 22:28:26,837 INFO L158 Benchmark]: CACSL2BoogieTranslator took 347.97ms. Allocated memory is still 195.0MB. Free memory was 147.2MB in the beginning and 133.8MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-11-23 22:28:26,837 INFO L158 Benchmark]: Boogie Procedure Inliner took 65.67ms. Allocated memory is still 195.0MB. Free memory was 133.8MB in the beginning and 131.2MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-23 22:28:26,838 INFO L158 Benchmark]: Boogie Preprocessor took 97.61ms. Allocated memory is still 195.0MB. Free memory was 131.2MB in the beginning and 127.6MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-23 22:28:26,838 INFO L158 Benchmark]: RCFGBuilder took 1712.59ms. Allocated memory is still 195.0MB. Free memory was 127.6MB in the beginning and 107.4MB in the end (delta: 20.2MB). Peak memory consumption was 77.3MB. Max. memory is 16.1GB. [2023-11-23 22:28:26,839 INFO L158 Benchmark]: TraceAbstraction took 22828.41ms. Allocated memory was 195.0MB in the beginning and 2.0GB in the end (delta: 1.8GB). Free memory was 107.4MB in the beginning and 898.3MB in the end (delta: -790.9MB). Peak memory consumption was 971.8MB. Max. memory is 16.1GB. [2023-11-23 22:28:26,839 INFO L158 Benchmark]: Witness Printer took 161.94ms. Allocated memory is still 2.0GB. Free memory was 898.3MB in the beginning and 890.9MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-23 22:28:26,842 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.40ms. Allocated memory is still 151.0MB. Free memory is still 95.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 347.97ms. Allocated memory is still 195.0MB. Free memory was 147.2MB in the beginning and 133.8MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 65.67ms. Allocated memory is still 195.0MB. Free memory was 133.8MB in the beginning and 131.2MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 97.61ms. Allocated memory is still 195.0MB. Free memory was 131.2MB in the beginning and 127.6MB in the end (delta: 3.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1712.59ms. Allocated memory is still 195.0MB. Free memory was 127.6MB in the beginning and 107.4MB in the end (delta: 20.2MB). Peak memory consumption was 77.3MB. Max. memory is 16.1GB. * TraceAbstraction took 22828.41ms. Allocated memory was 195.0MB in the beginning and 2.0GB in the end (delta: 1.8GB). Free memory was 107.4MB in the beginning and 898.3MB in the end (delta: -790.9MB). Peak memory consumption was 971.8MB. Max. memory is 16.1GB. * Witness Printer took 161.94ms. Allocated memory is still 2.0GB. Free memory was 898.3MB in the beginning and 890.9MB in the end (delta: 7.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 55]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 61]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 67]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 67]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 73]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 73]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 91]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 103]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 109]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 109]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 158]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 110 locations, 41 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 22.6s, OverallIterations: 14, TraceHistogramMax: 5, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 16.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 755 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 723 mSDsluCounter, 210 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 204 mSDsCounter, 221 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2285 IncrementalHoareTripleChecker+Invalid, 2506 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 221 mSolverCounterUnsat, 6 mSDtfsCounter, 2285 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 270 GetRequests, 162 SyntacticMatches, 2 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=541occurred in iteration=7, InterpolantAutomatonStates: 89, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 366 NumberOfCodeBlocks, 339 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 394 ConstructedInterpolants, 0 QuantifiedInterpolants, 1254 SizeOfPredicates, 13 NumberOfNonLiveVariables, 1514 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 24 InterpolantComputations, 11 PerfectInterpolantSequences, 77/144 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 22 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-23 22:28:26,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1b04290-9cd1-483f-a8ab-2daeca037602/bin/uautomizer-verify-zZY32mL2XJ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE