./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread-wmm/mix051_tso.oepc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ae0be5-4229-467d-8691-282fceb37bfe/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ae0be5-4229-467d-8691-282fceb37bfe/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ae0be5-4229-467d-8691-282fceb37bfe/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ae0be5-4229-467d-8691-282fceb37bfe/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-wmm/mix051_tso.oepc.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ae0be5-4229-467d-8691-282fceb37bfe/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ae0be5-4229-467d-8691-282fceb37bfe/bin/uautomizer-verify-bycVGegfSx --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 798582ee4a09ede0f5c496225fe921dfd53b0dfd5ded797f7106b8b9ef24e798 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:16:37,683 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:16:37,764 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ae0be5-4229-467d-8691-282fceb37bfe/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-21 22:16:37,771 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:16:37,772 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:16:37,800 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:16:37,801 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:16:37,802 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:16:37,803 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 22:16:37,803 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 22:16:37,804 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:16:37,805 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:16:37,806 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:16:37,806 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:16:37,807 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:16:37,808 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:16:37,808 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 22:16:37,809 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:16:37,810 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:16:37,810 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:16:37,811 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:16:37,812 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 22:16:37,813 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:16:37,813 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 22:16:37,814 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-21 22:16:37,814 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:16:37,815 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:16:37,816 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 22:16:37,816 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:16:37,817 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:16:37,817 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:16:37,818 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:16:37,818 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:16:37,819 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:16:37,820 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:16:37,820 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:16:37,821 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 22:16:37,821 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:16:37,822 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:16:37,822 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:16:37,822 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:16:37,826 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 22:16:37,827 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:16:37,827 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:16:37,828 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_89ae0be5-4229-467d-8691-282fceb37bfe/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ae0be5-4229-467d-8691-282fceb37bfe/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 798582ee4a09ede0f5c496225fe921dfd53b0dfd5ded797f7106b8b9ef24e798 [2023-11-21 22:16:38,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:16:38,144 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:16:38,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:16:38,165 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:16:38,166 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:16:38,167 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ae0be5-4229-467d-8691-282fceb37bfe/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/pthread-wmm/mix051_tso.oepc.i [2023-11-21 22:16:41,422 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:16:41,745 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:16:41,746 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ae0be5-4229-467d-8691-282fceb37bfe/sv-benchmarks/c/pthread-wmm/mix051_tso.oepc.i [2023-11-21 22:16:41,765 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ae0be5-4229-467d-8691-282fceb37bfe/bin/uautomizer-verify-bycVGegfSx/data/ea15ea989/44aada11fd504d76a55f1c3a850f9b9d/FLAGd9679322e [2023-11-21 22:16:41,781 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ae0be5-4229-467d-8691-282fceb37bfe/bin/uautomizer-verify-bycVGegfSx/data/ea15ea989/44aada11fd504d76a55f1c3a850f9b9d [2023-11-21 22:16:41,783 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:16:41,785 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:16:41,787 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:16:41,787 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:16:41,793 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:16:41,794 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:16:41" (1/1) ... [2023-11-21 22:16:41,795 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3967b9ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:41, skipping insertion in model container [2023-11-21 22:16:41,795 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:16:41" (1/1) ... [2023-11-21 22:16:41,852 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:16:42,393 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:16:42,409 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:16:42,517 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:16:42,613 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:16:42,613 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:16:42,622 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:16:42,622 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:42 WrapperNode [2023-11-21 22:16:42,623 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:16:42,624 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:16:42,624 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:16:42,624 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:16:42,633 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:42" (1/1) ... [2023-11-21 22:16:42,674 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:42" (1/1) ... [2023-11-21 22:16:42,741 INFO L138 Inliner]: procedures = 177, calls = 68, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 168 [2023-11-21 22:16:42,750 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:16:42,751 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:16:42,751 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:16:42,752 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:16:42,764 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:42" (1/1) ... [2023-11-21 22:16:42,764 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:42" (1/1) ... [2023-11-21 22:16:42,779 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:42" (1/1) ... [2023-11-21 22:16:42,804 INFO L187 HeapSplitter]: Split 6 memory accesses to 5 slices as follows [2, 1, 1, 1, 1] [2023-11-21 22:16:42,804 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:42" (1/1) ... [2023-11-21 22:16:42,804 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:42" (1/1) ... [2023-11-21 22:16:42,826 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:42" (1/1) ... [2023-11-21 22:16:42,828 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:42" (1/1) ... [2023-11-21 22:16:42,831 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:42" (1/1) ... [2023-11-21 22:16:42,833 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:42" (1/1) ... [2023-11-21 22:16:42,854 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:16:42,855 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:16:42,855 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:16:42,855 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:16:42,856 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:42" (1/1) ... [2023-11-21 22:16:42,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:16:42,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ae0be5-4229-467d-8691-282fceb37bfe/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:16:42,901 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ae0be5-4229-467d-8691-282fceb37bfe/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:16:42,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ae0be5-4229-467d-8691-282fceb37bfe/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:16:42,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-21 22:16:42,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-21 22:16:42,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-21 22:16:42,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-21 22:16:42,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-21 22:16:42,943 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-11-21 22:16:42,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:16:42,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:16:42,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:16:42,946 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-11-21 22:16:42,947 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-11-21 22:16:42,947 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-11-21 22:16:42,947 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-11-21 22:16:42,947 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-11-21 22:16:42,947 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-11-21 22:16:42,948 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-11-21 22:16:42,949 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-11-21 22:16:42,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 22:16:42,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 22:16:42,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-21 22:16:42,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-21 22:16:42,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-21 22:16:42,951 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-11-21 22:16:42,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:16:42,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:16:42,954 WARN L212 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-21 22:16:43,155 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:16:43,159 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:16:43,659 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:16:43,993 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:16:43,994 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 22:16:43,996 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:16:43 BoogieIcfgContainer [2023-11-21 22:16:43,996 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:16:44,002 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:16:44,002 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:16:44,006 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:16:44,007 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:16:41" (1/3) ... [2023-11-21 22:16:44,007 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f2aade3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:16:44, skipping insertion in model container [2023-11-21 22:16:44,008 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:16:42" (2/3) ... [2023-11-21 22:16:44,009 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f2aade3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:16:44, skipping insertion in model container [2023-11-21 22:16:44,009 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:16:43" (3/3) ... [2023-11-21 22:16:44,011 INFO L112 eAbstractionObserver]: Analyzing ICFG mix051_tso.oepc.i [2023-11-21 22:16:44,022 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-21 22:16:44,033 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:16:44,033 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2023-11-21 22:16:44,034 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-21 22:16:44,112 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-21 22:16:44,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 50 transitions, 116 flow [2023-11-21 22:16:44,197 INFO L124 PetriNetUnfolderBase]: 0/46 cut-off events. [2023-11-21 22:16:44,198 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:16:44,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 46 events. 0/46 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 129 event pairs, 0 based on Foata normal form. 0/38 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-11-21 22:16:44,203 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 50 transitions, 116 flow [2023-11-21 22:16:44,209 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 59 places, 46 transitions, 104 flow [2023-11-21 22:16:44,228 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:16:44,247 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;@142d1eac, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:16:44,247 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-11-21 22:16:44,256 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-21 22:16:44,256 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-11-21 22:16:44,256 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-21 22:16:44,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:44,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:16:44,258 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-21 22:16:44,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:44,266 INFO L85 PathProgramCache]: Analyzing trace with hash -307552114, now seen corresponding path program 1 times [2023-11-21 22:16:44,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:44,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613792989] [2023-11-21 22:16:44,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:44,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:44,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:44,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:16:44,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:44,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613792989] [2023-11-21 22:16:44,659 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613792989] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:44,659 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:44,659 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-21 22:16:44,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264693272] [2023-11-21 22:16:44,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:44,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 22:16:44,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:44,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 22:16:44,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-21 22:16:44,752 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2023-11-21 22:16:44,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 104 flow. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:44,755 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:16:44,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2023-11-21 22:16:44,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:16:49,806 INFO L124 PetriNetUnfolderBase]: 23093/30907 cut-off events. [2023-11-21 22:16:49,806 INFO L125 PetriNetUnfolderBase]: For 196/196 co-relation queries the response was YES. [2023-11-21 22:16:49,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62169 conditions, 30907 events. 23093/30907 cut-off events. For 196/196 co-relation queries the response was YES. Maximal size of possible extension queue 1595. Compared 188501 event pairs, 9825 based on Foata normal form. 0/22403 useless extension candidates. Maximal degree in co-relation 62157. Up to 30293 conditions per place. [2023-11-21 22:16:50,228 INFO L140 encePairwiseOnDemand]: 37/50 looper letters, 49 selfloop transitions, 5 changer transitions 0/66 dead transitions. [2023-11-21 22:16:50,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 66 transitions, 261 flow [2023-11-21 22:16:50,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 22:16:50,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-21 22:16:50,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 110 transitions. [2023-11-21 22:16:50,244 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7333333333333333 [2023-11-21 22:16:50,245 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 110 transitions. [2023-11-21 22:16:50,246 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 110 transitions. [2023-11-21 22:16:50,247 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:16:50,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 110 transitions. [2023-11-21 22:16:50,253 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:50,258 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:50,259 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 50.0) internal successors, (200), 4 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:50,261 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 104 flow. Second operand 3 states and 110 transitions. [2023-11-21 22:16:50,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 66 transitions, 261 flow [2023-11-21 22:16:50,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 66 transitions, 254 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-21 22:16:50,277 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 147 flow [2023-11-21 22:16:50,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=147, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2023-11-21 22:16:50,284 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -1 predicate places. [2023-11-21 22:16:50,284 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 147 flow [2023-11-21 22:16:50,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:50,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:50,285 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:16:50,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:16:50,285 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-21 22:16:50,286 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:50,287 INFO L85 PathProgramCache]: Analyzing trace with hash 142090519, now seen corresponding path program 1 times [2023-11-21 22:16:50,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:50,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147916153] [2023-11-21 22:16:50,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:50,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:50,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:50,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:16:50,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:50,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147916153] [2023-11-21 22:16:50,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147916153] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:50,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:50,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:16:50,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748110053] [2023-11-21 22:16:50,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:50,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:16:50,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:50,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:16:50,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:16:50,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2023-11-21 22:16:50,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 147 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:50,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:16:50,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2023-11-21 22:16:50,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:16:53,505 INFO L124 PetriNetUnfolderBase]: 12535/16925 cut-off events. [2023-11-21 22:16:53,506 INFO L125 PetriNetUnfolderBase]: For 1267/1267 co-relation queries the response was YES. [2023-11-21 22:16:53,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40200 conditions, 16925 events. 12535/16925 cut-off events. For 1267/1267 co-relation queries the response was YES. Maximal size of possible extension queue 938. Compared 99756 event pairs, 4513 based on Foata normal form. 0/13997 useless extension candidates. Maximal degree in co-relation 40189. Up to 16310 conditions per place. [2023-11-21 22:16:53,671 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 45 selfloop transitions, 5 changer transitions 0/62 dead transitions. [2023-11-21 22:16:53,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 62 transitions, 269 flow [2023-11-21 22:16:53,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:16:53,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:16:53,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2023-11-21 22:16:53,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.59 [2023-11-21 22:16:53,677 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 118 transitions. [2023-11-21 22:16:53,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 118 transitions. [2023-11-21 22:16:53,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:16:53,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 118 transitions. [2023-11-21 22:16:53,679 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 29.5) internal successors, (118), 4 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:53,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:53,680 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:53,680 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 147 flow. Second operand 4 states and 118 transitions. [2023-11-21 22:16:53,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 62 transitions, 269 flow [2023-11-21 22:16:53,682 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 62 transitions, 264 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-21 22:16:53,683 INFO L231 Difference]: Finished difference. Result has 56 places, 46 transitions, 136 flow [2023-11-21 22:16:53,684 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=136, PETRI_PLACES=56, PETRI_TRANSITIONS=46} [2023-11-21 22:16:53,684 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -3 predicate places. [2023-11-21 22:16:53,685 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 46 transitions, 136 flow [2023-11-21 22:16:53,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:53,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:53,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:16:53,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:16:53,685 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-21 22:16:53,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:53,686 INFO L85 PathProgramCache]: Analyzing trace with hash 142090520, now seen corresponding path program 1 times [2023-11-21 22:16:53,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:53,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90262148] [2023-11-21 22:16:53,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:53,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:53,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:53,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:16:53,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:53,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90262148] [2023-11-21 22:16:53,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90262148] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:53,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:53,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-21 22:16:53,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113030035] [2023-11-21 22:16:53,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:53,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:16:53,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:53,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:16:53,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:16:53,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2023-11-21 22:16:53,872 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 46 transitions, 136 flow. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:53,872 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:16:53,872 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2023-11-21 22:16:53,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:16:55,753 INFO L124 PetriNetUnfolderBase]: 8713/11935 cut-off events. [2023-11-21 22:16:55,753 INFO L125 PetriNetUnfolderBase]: For 1706/1706 co-relation queries the response was YES. [2023-11-21 22:16:55,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27729 conditions, 11935 events. 8713/11935 cut-off events. For 1706/1706 co-relation queries the response was YES. Maximal size of possible extension queue 601. Compared 68300 event pairs, 1553 based on Foata normal form. 0/10649 useless extension candidates. Maximal degree in co-relation 27717. Up to 9229 conditions per place. [2023-11-21 22:16:55,856 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 63 selfloop transitions, 9 changer transitions 0/84 dead transitions. [2023-11-21 22:16:55,856 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 84 transitions, 374 flow [2023-11-21 22:16:55,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:16:55,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-21 22:16:55,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 140 transitions. [2023-11-21 22:16:55,861 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7 [2023-11-21 22:16:55,862 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 140 transitions. [2023-11-21 22:16:55,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 140 transitions. [2023-11-21 22:16:55,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:16:55,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 140 transitions. [2023-11-21 22:16:55,865 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:55,868 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:55,868 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 50.0) internal successors, (250), 5 states have internal predecessors, (250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:55,868 INFO L175 Difference]: Start difference. First operand has 56 places, 46 transitions, 136 flow. Second operand 4 states and 140 transitions. [2023-11-21 22:16:55,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 84 transitions, 374 flow [2023-11-21 22:16:55,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 84 transitions, 368 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-11-21 22:16:55,873 INFO L231 Difference]: Finished difference. Result has 58 places, 50 transitions, 188 flow [2023-11-21 22:16:55,874 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=188, PETRI_PLACES=58, PETRI_TRANSITIONS=50} [2023-11-21 22:16:55,875 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -1 predicate places. [2023-11-21 22:16:55,876 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 50 transitions, 188 flow [2023-11-21 22:16:55,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:55,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:55,876 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] [2023-11-21 22:16:55,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:16:55,877 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-21 22:16:55,878 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:55,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1658484236, now seen corresponding path program 1 times [2023-11-21 22:16:55,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:55,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308080311] [2023-11-21 22:16:55,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:55,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:55,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:56,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:16:56,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:56,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308080311] [2023-11-21 22:16:56,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308080311] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:56,082 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:56,082 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:16:56,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512555051] [2023-11-21 22:16:56,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:56,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:16:56,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:56,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:16:56,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:16:56,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2023-11-21 22:16:56,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 50 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 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) [2023-11-21 22:16:56,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:16:56,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2023-11-21 22:16:56,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:16:57,954 INFO L124 PetriNetUnfolderBase]: 6421/8827 cut-off events. [2023-11-21 22:16:57,955 INFO L125 PetriNetUnfolderBase]: For 4257/4257 co-relation queries the response was YES. [2023-11-21 22:16:57,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23174 conditions, 8827 events. 6421/8827 cut-off events. For 4257/4257 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 49454 event pairs, 489 based on Foata normal form. 0/8504 useless extension candidates. Maximal degree in co-relation 23161. Up to 3065 conditions per place. [2023-11-21 22:16:58,044 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 75 selfloop transitions, 13 changer transitions 4/104 dead transitions. [2023-11-21 22:16:58,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 104 transitions, 508 flow [2023-11-21 22:16:58,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:16:58,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-21 22:16:58,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 176 transitions. [2023-11-21 22:16:58,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.704 [2023-11-21 22:16:58,048 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 176 transitions. [2023-11-21 22:16:58,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 176 transitions. [2023-11-21 22:16:58,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:16:58,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 176 transitions. [2023-11-21 22:16:58,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 35.2) internal successors, (176), 5 states have internal predecessors, (176), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:58,052 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 50.0) internal successors, (300), 6 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:58,053 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 50.0) internal successors, (300), 6 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:58,053 INFO L175 Difference]: Start difference. First operand has 58 places, 50 transitions, 188 flow. Second operand 5 states and 176 transitions. [2023-11-21 22:16:58,053 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 104 transitions, 508 flow [2023-11-21 22:16:58,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 104 transitions, 490 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-11-21 22:16:58,064 INFO L231 Difference]: Finished difference. Result has 61 places, 50 transitions, 212 flow [2023-11-21 22:16:58,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=212, PETRI_PLACES=61, PETRI_TRANSITIONS=50} [2023-11-21 22:16:58,078 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 2 predicate places. [2023-11-21 22:16:58,078 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 50 transitions, 212 flow [2023-11-21 22:16:58,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.6) internal successors, (93), 5 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) [2023-11-21 22:16:58,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-21 22:16:58,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:16:58,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:16:58,080 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 16 more)] === [2023-11-21 22:16:58,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:16:58,080 INFO L85 PathProgramCache]: Analyzing trace with hash -557972904, now seen corresponding path program 1 times [2023-11-21 22:16:58,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:16:58,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687564245] [2023-11-21 22:16:58,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:16:58,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:16:58,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:16:58,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:16:58,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:16:58,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687564245] [2023-11-21 22:16:58,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687564245] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:16:58,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:16:58,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:16:58,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774178228] [2023-11-21 22:16:58,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:16:58,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:16:58,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:16:58,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:16:58,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:16:58,331 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2023-11-21 22:16:58,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 50 transitions, 212 flow. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:58,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-21 22:16:58,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2023-11-21 22:16:58,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-21 22:16:59,732 INFO L124 PetriNetUnfolderBase]: 5605/7723 cut-off events. [2023-11-21 22:16:59,733 INFO L125 PetriNetUnfolderBase]: For 7457/7457 co-relation queries the response was YES. [2023-11-21 22:16:59,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21067 conditions, 7723 events. 5605/7723 cut-off events. For 7457/7457 co-relation queries the response was YES. Maximal size of possible extension queue 465. Compared 44529 event pairs, 345 based on Foata normal form. 192/7784 useless extension candidates. Maximal degree in co-relation 21053. Up to 3056 conditions per place. [2023-11-21 22:16:59,772 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 0 selfloop transitions, 0 changer transitions 96/96 dead transitions. [2023-11-21 22:16:59,772 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 96 transitions, 460 flow [2023-11-21 22:16:59,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:16:59,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-21 22:16:59,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 184 transitions. [2023-11-21 22:16:59,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6133333333333333 [2023-11-21 22:16:59,774 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 184 transitions. [2023-11-21 22:16:59,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 184 transitions. [2023-11-21 22:16:59,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-21 22:16:59,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 184 transitions. [2023-11-21 22:16:59,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 30.666666666666668) internal successors, (184), 6 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) [2023-11-21 22:16:59,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 50.0) internal successors, (350), 7 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:59,778 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 50.0) internal successors, (350), 7 states have internal predecessors, (350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:59,778 INFO L175 Difference]: Start difference. First operand has 61 places, 50 transitions, 212 flow. Second operand 6 states and 184 transitions. [2023-11-21 22:16:59,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 96 transitions, 460 flow [2023-11-21 22:16:59,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 96 transitions, 405 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-11-21 22:16:59,930 INFO L231 Difference]: Finished difference. Result has 56 places, 0 transitions, 0 flow [2023-11-21 22:16:59,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=0, PETRI_PLACES=56, PETRI_TRANSITIONS=0} [2023-11-21 22:16:59,933 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, -3 predicate places. [2023-11-21 22:16:59,933 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 0 transitions, 0 flow [2023-11-21 22:16:59,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 6 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-21 22:16:59,937 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 20 remaining) [2023-11-21 22:16:59,938 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 20 remaining) [2023-11-21 22:16:59,938 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 20 remaining) [2023-11-21 22:16:59,939 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 20 remaining) [2023-11-21 22:16:59,939 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 20 remaining) [2023-11-21 22:16:59,939 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 20 remaining) [2023-11-21 22:16:59,940 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 20 remaining) [2023-11-21 22:16:59,940 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 20 remaining) [2023-11-21 22:16:59,940 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 20 remaining) [2023-11-21 22:16:59,940 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 20 remaining) [2023-11-21 22:16:59,940 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (9 of 20 remaining) [2023-11-21 22:16:59,941 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 20 remaining) [2023-11-21 22:16:59,941 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 20 remaining) [2023-11-21 22:16:59,941 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 20 remaining) [2023-11-21 22:16:59,941 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 20 remaining) [2023-11-21 22:16:59,942 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 20 remaining) [2023-11-21 22:16:59,942 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 20 remaining) [2023-11-21 22:16:59,942 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 20 remaining) [2023-11-21 22:16:59,947 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 20 remaining) [2023-11-21 22:16:59,948 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 20 remaining) [2023-11-21 22:16:59,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 22:16:59,949 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-11-21 22:16:59,957 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-21 22:16:59,957 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-21 22:16:59,966 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.11 10:16:59 BasicIcfg [2023-11-21 22:16:59,967 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-21 22:16:59,968 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-21 22:16:59,968 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-21 22:16:59,968 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-21 22:16:59,969 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:16:43" (3/4) ... [2023-11-21 22:16:59,972 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-21 22:16:59,975 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-11-21 22:16:59,975 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-11-21 22:16:59,976 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-11-21 22:16:59,976 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P3 [2023-11-21 22:16:59,987 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 102 nodes and edges [2023-11-21 22:16:59,987 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2023-11-21 22:16:59,988 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2023-11-21 22:16:59,988 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-11-21 22:17:00,111 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ae0be5-4229-467d-8691-282fceb37bfe/bin/uautomizer-verify-bycVGegfSx/witness.graphml [2023-11-21 22:17:00,111 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ae0be5-4229-467d-8691-282fceb37bfe/bin/uautomizer-verify-bycVGegfSx/witness.yml [2023-11-21 22:17:00,111 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-21 22:17:00,112 INFO L158 Benchmark]: Toolchain (without parser) took 18327.01ms. Allocated memory was 146.8MB in the beginning and 3.3GB in the end (delta: 3.1GB). Free memory was 98.5MB in the beginning and 1.9GB in the end (delta: -1.8GB). Peak memory consumption was 1.3GB. Max. memory is 16.1GB. [2023-11-21 22:17:00,112 INFO L158 Benchmark]: CDTParser took 1.20ms. Allocated memory is still 146.8MB. Free memory is still 89.4MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-21 22:17:00,113 INFO L158 Benchmark]: CACSL2BoogieTranslator took 836.19ms. Allocated memory was 146.8MB in the beginning and 195.0MB in the end (delta: 48.2MB). Free memory was 98.2MB in the beginning and 161.9MB in the end (delta: -63.7MB). Peak memory consumption was 31.7MB. Max. memory is 16.1GB. [2023-11-21 22:17:00,113 INFO L158 Benchmark]: Boogie Procedure Inliner took 126.81ms. Allocated memory is still 195.0MB. Free memory was 161.9MB in the beginning and 163.5MB in the end (delta: -1.6MB). Peak memory consumption was 3.6MB. Max. memory is 16.1GB. [2023-11-21 22:17:00,114 INFO L158 Benchmark]: Boogie Preprocessor took 102.92ms. Allocated memory is still 195.0MB. Free memory was 163.5MB in the beginning and 159.2MB in the end (delta: 4.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-21 22:17:00,114 INFO L158 Benchmark]: RCFGBuilder took 1141.39ms. Allocated memory is still 195.0MB. Free memory was 159.2MB in the beginning and 158.8MB in the end (delta: 428.2kB). Peak memory consumption was 61.9MB. Max. memory is 16.1GB. [2023-11-21 22:17:00,114 INFO L158 Benchmark]: TraceAbstraction took 15964.78ms. Allocated memory was 195.0MB in the beginning and 3.3GB in the end (delta: 3.1GB). Free memory was 157.7MB in the beginning and 1.9GB in the end (delta: -1.7GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. [2023-11-21 22:17:00,115 INFO L158 Benchmark]: Witness Printer took 143.95ms. Allocated memory is still 3.3GB. Free memory was 1.9GB in the beginning and 1.9GB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-11-21 22:17:00,118 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.20ms. Allocated memory is still 146.8MB. Free memory is still 89.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 836.19ms. Allocated memory was 146.8MB in the beginning and 195.0MB in the end (delta: 48.2MB). Free memory was 98.2MB in the beginning and 161.9MB in the end (delta: -63.7MB). Peak memory consumption was 31.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 126.81ms. Allocated memory is still 195.0MB. Free memory was 161.9MB in the beginning and 163.5MB in the end (delta: -1.6MB). Peak memory consumption was 3.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 102.92ms. Allocated memory is still 195.0MB. Free memory was 163.5MB in the beginning and 159.2MB in the end (delta: 4.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 1141.39ms. Allocated memory is still 195.0MB. Free memory was 159.2MB in the beginning and 158.8MB in the end (delta: 428.2kB). Peak memory consumption was 61.9MB. Max. memory is 16.1GB. * TraceAbstraction took 15964.78ms. Allocated memory was 195.0MB in the beginning and 3.3GB in the end (delta: 3.1GB). Free memory was 157.7MB in the beginning and 1.9GB in the end (delta: -1.7GB). Peak memory consumption was 1.4GB. Max. memory is 16.1GB. * Witness Printer took 143.95ms. Allocated memory is still 3.3GB. Free memory was 1.9GB in the beginning and 1.9GB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 763]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 763]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 793]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 793]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 813]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 813]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 833]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 833]: 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 9 procedures, 91 locations, 20 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: 15.8s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 14.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 236 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 226 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 46 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 467 IncrementalHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 46 mSolverCounterUnsat, 1 mSDtfsCounter, 467 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=212occurred in iteration=4, InterpolantAutomatonStates: 22, 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: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 79 ConstructedInterpolants, 0 QuantifiedInterpolants, 237 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 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 8 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-21 22:17:00,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89ae0be5-4229-467d-8691-282fceb37bfe/bin/uautomizer-verify-bycVGegfSx/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