./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc 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_8514b27a-8714-49fc-a926-93df2ec9cd2c/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8514b27a-8714-49fc-a926-93df2ec9cd2c/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8514b27a-8714-49fc-a926-93df2ec9cd2c/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8514b27a-8714-49fc-a926-93df2ec9cd2c/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8514b27a-8714-49fc-a926-93df2ec9cd2c/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8514b27a-8714-49fc-a926-93df2ec9cd2c/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cec155e54548239c459fec40910e358deb5fad2ceffa658bfdeefddd1bc9e166 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 00:02:33,685 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 00:02:33,747 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8514b27a-8714-49fc-a926-93df2ec9cd2c/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 00:02:33,751 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 00:02:33,752 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 00:02:33,773 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 00:02:33,774 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 00:02:33,775 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 00:02:33,775 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 00:02:33,776 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 00:02:33,776 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 00:02:33,777 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 00:02:33,778 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 00:02:33,778 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 00:02:33,778 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 00:02:33,779 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 00:02:33,780 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 00:02:33,780 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 00:02:33,780 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 00:02:33,781 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 00:02:33,781 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 00:02:33,782 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 00:02:33,782 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 00:02:33,783 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 00:02:33,783 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 00:02:33,784 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 00:02:33,784 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 00:02:33,785 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 00:02:33,785 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 00:02:33,786 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 00:02:33,786 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 00:02:33,786 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:02:33,787 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 00:02:33,787 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 00:02:33,788 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 00:02:33,788 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 00:02:33,788 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 00:02:33,788 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 00:02:33,789 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 00:02:33,789 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 00:02:33,789 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 00:02:33,789 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 00:02:33,789 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_8514b27a-8714-49fc-a926-93df2ec9cd2c/bin/uautomizer-verify-BQ2R08f2Ya/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8514b27a-8714-49fc-a926-93df2ec9cd2c/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cec155e54548239c459fec40910e358deb5fad2ceffa658bfdeefddd1bc9e166 [2023-11-29 00:02:34,014 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 00:02:34,035 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 00:02:34,037 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 00:02:34,039 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 00:02:34,039 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 00:02:34,041 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8514b27a-8714-49fc-a926-93df2ec9cd2c/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i [2023-11-29 00:02:36,783 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 00:02:37,003 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 00:02:37,004 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8514b27a-8714-49fc-a926-93df2ec9cd2c/sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i [2023-11-29 00:02:37,020 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8514b27a-8714-49fc-a926-93df2ec9cd2c/bin/uautomizer-verify-BQ2R08f2Ya/data/7f885ad4c/38b61c37d0f44ef0b23bb11a2b65426b/FLAGc4f6b200d [2023-11-29 00:02:37,036 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8514b27a-8714-49fc-a926-93df2ec9cd2c/bin/uautomizer-verify-BQ2R08f2Ya/data/7f885ad4c/38b61c37d0f44ef0b23bb11a2b65426b [2023-11-29 00:02:37,039 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 00:02:37,041 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 00:02:37,043 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 00:02:37,043 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 00:02:37,049 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 00:02:37,049 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:02:37" (1/1) ... [2023-11-29 00:02:37,051 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5077ecb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:02:37, skipping insertion in model container [2023-11-29 00:02:37,051 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 12:02:37" (1/1) ... [2023-11-29 00:02:37,103 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 00:02:37,267 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8514b27a-8714-49fc-a926-93df2ec9cd2c/sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i[1092,1105] [2023-11-29 00:02:37,440 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:02:37,454 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 00:02:37,467 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8514b27a-8714-49fc-a926-93df2ec9cd2c/sv-benchmarks/c/goblint-regression/36-apron_21-traces-cluster-based_true.i[1092,1105] [2023-11-29 00:02:37,501 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 00:02:37,542 INFO L206 MainTranslator]: Completed translation [2023-11-29 00:02:37,542 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:02:37 WrapperNode [2023-11-29 00:02:37,542 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 00:02:37,543 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 00:02:37,544 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 00:02:37,544 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 00:02:37,552 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:02:37" (1/1) ... [2023-11-29 00:02:37,566 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:02:37" (1/1) ... [2023-11-29 00:02:37,592 INFO L138 Inliner]: procedures = 166, calls = 53, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 149 [2023-11-29 00:02:37,593 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 00:02:37,594 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 00:02:37,594 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 00:02:37,594 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 00:02:37,605 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:02:37" (1/1) ... [2023-11-29 00:02:37,606 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:02:37" (1/1) ... [2023-11-29 00:02:37,609 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:02:37" (1/1) ... [2023-11-29 00:02:37,650 INFO L175 MemorySlicer]: Split 15 memory accesses to 6 slices as follows [2, 5, 5, 1, 1, 1]. 33 percent of accesses are in the largest equivalence class. The 12 initializations are split as follows [2, 5, 5, 0, 0, 0]. The 3 writes are split as follows [0, 0, 0, 1, 1, 1]. [2023-11-29 00:02:37,650 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:02:37" (1/1) ... [2023-11-29 00:02:37,650 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:02:37" (1/1) ... [2023-11-29 00:02:37,657 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:02:37" (1/1) ... [2023-11-29 00:02:37,659 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:02:37" (1/1) ... [2023-11-29 00:02:37,661 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:02:37" (1/1) ... [2023-11-29 00:02:37,663 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:02:37" (1/1) ... [2023-11-29 00:02:37,667 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 00:02:37,668 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 00:02:37,669 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 00:02:37,669 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 00:02:37,670 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:02:37" (1/1) ... [2023-11-29 00:02:37,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 00:02:37,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8514b27a-8714-49fc-a926-93df2ec9cd2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 00:02:37,693 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8514b27a-8714-49fc-a926-93df2ec9cd2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 00:02:37,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8514b27a-8714-49fc-a926-93df2ec9cd2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 00:02:37,731 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-29 00:02:37,731 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-29 00:02:37,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 00:02:37,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 00:02:37,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 00:02:37,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 00:02:37,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-29 00:02:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-29 00:02:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-29 00:02:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 00:02:37,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 00:02:37,734 INFO L130 BoogieDeclarations]: Found specification of procedure t3_fun [2023-11-29 00:02:37,734 INFO L138 BoogieDeclarations]: Found implementation of procedure t3_fun [2023-11-29 00:02:37,734 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-11-29 00:02:37,734 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-11-29 00:02:37,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 00:02:37,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 00:02:37,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 00:02:37,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 00:02:37,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 00:02:37,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-29 00:02:37,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-29 00:02:37,736 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-29 00:02:37,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 00:02:37,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 00:02:37,738 WARN L213 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-29 00:02:37,870 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 00:02:37,872 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 00:02:38,113 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 00:02:38,274 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 00:02:38,275 INFO L309 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-29 00:02:38,275 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:02:38 BoogieIcfgContainer [2023-11-29 00:02:38,276 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 00:02:38,278 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 00:02:38,278 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 00:02:38,281 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 00:02:38,281 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 12:02:37" (1/3) ... [2023-11-29 00:02:38,282 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf20c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:02:38, skipping insertion in model container [2023-11-29 00:02:38,282 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 12:02:37" (2/3) ... [2023-11-29 00:02:38,282 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cf20c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 12:02:38, skipping insertion in model container [2023-11-29 00:02:38,282 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:02:38" (3/3) ... [2023-11-29 00:02:38,284 INFO L112 eAbstractionObserver]: Analyzing ICFG 36-apron_21-traces-cluster-based_true.i [2023-11-29 00:02:38,293 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-29 00:02:38,303 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 00:02:38,304 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-29 00:02:38,304 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-29 00:02:38,362 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-29 00:02:38,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 73 places, 68 transitions, 148 flow [2023-11-29 00:02:38,422 INFO L124 PetriNetUnfolderBase]: 5/65 cut-off events. [2023-11-29 00:02:38,422 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:02:38,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75 conditions, 65 events. 5/65 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 148 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 67. Up to 2 conditions per place. [2023-11-29 00:02:38,426 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 68 transitions, 148 flow [2023-11-29 00:02:38,430 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 70 places, 65 transitions, 139 flow [2023-11-29 00:02:38,438 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 00:02:38,444 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;@ee35973, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 00:02:38,444 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-29 00:02:38,454 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-29 00:02:38,455 INFO L124 PetriNetUnfolderBase]: 1/32 cut-off events. [2023-11-29 00:02:38,455 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-29 00:02:38,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:02:38,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:02:38,456 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-29 00:02:38,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:02:38,460 INFO L85 PathProgramCache]: Analyzing trace with hash -636492636, now seen corresponding path program 1 times [2023-11-29 00:02:38,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:02:38,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632123648] [2023-11-29 00:02:38,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:02:38,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:02:38,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:02:38,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:02:38,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:02:38,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632123648] [2023-11-29 00:02:38,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632123648] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:02:38,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:02:38,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:02:38,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157415073] [2023-11-29 00:02:38,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:02:38,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:02:38,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:02:38,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:02:38,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:02:38,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 68 [2023-11-29 00:02:38,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 65 transitions, 139 flow. Second operand has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 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) [2023-11-29 00:02:38,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:02:38,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 68 [2023-11-29 00:02:38,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:02:43,769 INFO L124 PetriNetUnfolderBase]: 30713/46957 cut-off events. [2023-11-29 00:02:43,769 INFO L125 PetriNetUnfolderBase]: For 122/122 co-relation queries the response was YES. [2023-11-29 00:02:43,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90086 conditions, 46957 events. 30713/46957 cut-off events. For 122/122 co-relation queries the response was YES. Maximal size of possible extension queue 1228. Compared 351275 event pairs, 7163 based on Foata normal form. 3860/49773 useless extension candidates. Maximal degree in co-relation 90075. Up to 11332 conditions per place. [2023-11-29 00:02:44,123 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 190 selfloop transitions, 11 changer transitions 0/220 dead transitions. [2023-11-29 00:02:44,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 220 transitions, 872 flow [2023-11-29 00:02:44,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:02:44,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 00:02:44,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 401 transitions. [2023-11-29 00:02:44,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7371323529411765 [2023-11-29 00:02:44,140 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 401 transitions. [2023-11-29 00:02:44,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 401 transitions. [2023-11-29 00:02:44,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:02:44,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 401 transitions. [2023-11-29 00:02:44,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 50.125) internal successors, (401), 8 states have internal predecessors, (401), 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) [2023-11-29 00:02:44,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 68.0) internal successors, (612), 9 states have internal predecessors, (612), 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) [2023-11-29 00:02:44,157 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 68.0) internal successors, (612), 9 states have internal predecessors, (612), 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) [2023-11-29 00:02:44,158 INFO L175 Difference]: Start difference. First operand has 70 places, 65 transitions, 139 flow. Second operand 8 states and 401 transitions. [2023-11-29 00:02:44,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 220 transitions, 872 flow [2023-11-29 00:02:44,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 220 transitions, 862 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-11-29 00:02:44,171 INFO L231 Difference]: Finished difference. Result has 78 places, 69 transitions, 189 flow [2023-11-29 00:02:44,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=189, PETRI_PLACES=78, PETRI_TRANSITIONS=69} [2023-11-29 00:02:44,177 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 8 predicate places. [2023-11-29 00:02:44,177 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 69 transitions, 189 flow [2023-11-29 00:02:44,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.0) internal successors, (120), 5 states have internal predecessors, (120), 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) [2023-11-29 00:02:44,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:02:44,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:02:44,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 00:02:44,178 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-29 00:02:44,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:02:44,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1140138873, now seen corresponding path program 1 times [2023-11-29 00:02:44,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:02:44,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603807642] [2023-11-29 00:02:44,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:02:44,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:02:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:02:44,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:02:44,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:02:44,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603807642] [2023-11-29 00:02:44,356 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603807642] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:02:44,356 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:02:44,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:02:44,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231093816] [2023-11-29 00:02:44,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:02:44,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:02:44,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:02:44,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:02:44,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:02:44,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 68 [2023-11-29 00:02:44,366 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 189 flow. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 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) [2023-11-29 00:02:44,366 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:02:44,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 68 [2023-11-29 00:02:44,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:02:49,772 INFO L124 PetriNetUnfolderBase]: 46522/71668 cut-off events. [2023-11-29 00:02:49,772 INFO L125 PetriNetUnfolderBase]: For 13700/13700 co-relation queries the response was YES. [2023-11-29 00:02:49,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153089 conditions, 71668 events. 46522/71668 cut-off events. For 13700/13700 co-relation queries the response was YES. Maximal size of possible extension queue 2010. Compared 570430 event pairs, 9900 based on Foata normal form. 0/70261 useless extension candidates. Maximal degree in co-relation 153075. Up to 27642 conditions per place. [2023-11-29 00:02:50,259 INFO L140 encePairwiseOnDemand]: 57/68 looper letters, 193 selfloop transitions, 17 changer transitions 0/228 dead transitions. [2023-11-29 00:02:50,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 228 transitions, 1054 flow [2023-11-29 00:02:50,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:02:50,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 00:02:50,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 346 transitions. [2023-11-29 00:02:50,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6360294117647058 [2023-11-29 00:02:50,262 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 346 transitions. [2023-11-29 00:02:50,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 346 transitions. [2023-11-29 00:02:50,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:02:50,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 346 transitions. [2023-11-29 00:02:50,265 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 43.25) internal successors, (346), 8 states have internal predecessors, (346), 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) [2023-11-29 00:02:50,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 68.0) internal successors, (612), 9 states have internal predecessors, (612), 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) [2023-11-29 00:02:50,268 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 68.0) internal successors, (612), 9 states have internal predecessors, (612), 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) [2023-11-29 00:02:50,269 INFO L175 Difference]: Start difference. First operand has 78 places, 69 transitions, 189 flow. Second operand 8 states and 346 transitions. [2023-11-29 00:02:50,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 228 transitions, 1054 flow [2023-11-29 00:02:51,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 228 transitions, 1054 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 00:02:51,094 INFO L231 Difference]: Finished difference. Result has 89 places, 82 transitions, 288 flow [2023-11-29 00:02:51,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=288, PETRI_PLACES=89, PETRI_TRANSITIONS=82} [2023-11-29 00:02:51,095 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 19 predicate places. [2023-11-29 00:02:51,095 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 82 transitions, 288 flow [2023-11-29 00:02:51,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 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) [2023-11-29 00:02:51,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:02:51,096 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:02:51,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 00:02:51,096 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-29 00:02:51,097 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:02:51,097 INFO L85 PathProgramCache]: Analyzing trace with hash -334648776, now seen corresponding path program 1 times [2023-11-29 00:02:51,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:02:51,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470578276] [2023-11-29 00:02:51,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:02:51,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:02:51,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:02:51,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:02:51,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:02:51,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470578276] [2023-11-29 00:02:51,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470578276] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:02:51,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:02:51,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:02:51,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758197814] [2023-11-29 00:02:51,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:02:51,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:02:51,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:02:51,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:02:51,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:02:51,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 68 [2023-11-29 00:02:51,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 82 transitions, 288 flow. Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 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) [2023-11-29 00:02:51,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:02:51,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 68 [2023-11-29 00:02:51,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:02:59,018 INFO L124 PetriNetUnfolderBase]: 60127/97636 cut-off events. [2023-11-29 00:02:59,018 INFO L125 PetriNetUnfolderBase]: For 38506/38961 co-relation queries the response was YES. [2023-11-29 00:02:59,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225997 conditions, 97636 events. 60127/97636 cut-off events. For 38506/38961 co-relation queries the response was YES. Maximal size of possible extension queue 2964. Compared 870671 event pairs, 20848 based on Foata normal form. 0/96304 useless extension candidates. Maximal degree in co-relation 225977. Up to 41717 conditions per place. [2023-11-29 00:02:59,471 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 215 selfloop transitions, 17 changer transitions 3/257 dead transitions. [2023-11-29 00:02:59,471 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 257 transitions, 1362 flow [2023-11-29 00:02:59,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:02:59,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 00:02:59,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 363 transitions. [2023-11-29 00:02:59,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6672794117647058 [2023-11-29 00:02:59,473 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 363 transitions. [2023-11-29 00:02:59,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 363 transitions. [2023-11-29 00:02:59,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:02:59,473 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 363 transitions. [2023-11-29 00:02:59,474 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 45.375) internal successors, (363), 8 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:02:59,476 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 68.0) internal successors, (612), 9 states have internal predecessors, (612), 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) [2023-11-29 00:02:59,476 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 68.0) internal successors, (612), 9 states have internal predecessors, (612), 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) [2023-11-29 00:02:59,476 INFO L175 Difference]: Start difference. First operand has 89 places, 82 transitions, 288 flow. Second operand 8 states and 363 transitions. [2023-11-29 00:02:59,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 257 transitions, 1362 flow [2023-11-29 00:03:02,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 257 transitions, 1362 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 00:03:02,734 INFO L231 Difference]: Finished difference. Result has 100 places, 94 transitions, 397 flow [2023-11-29 00:03:02,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=397, PETRI_PLACES=100, PETRI_TRANSITIONS=94} [2023-11-29 00:03:02,735 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 30 predicate places. [2023-11-29 00:03:02,735 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 94 transitions, 397 flow [2023-11-29 00:03:02,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 5 states have internal predecessors, (124), 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) [2023-11-29 00:03:02,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:03:02,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:03:02,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-29 00:03:02,736 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-29 00:03:02,737 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:03:02,737 INFO L85 PathProgramCache]: Analyzing trace with hash 576937343, now seen corresponding path program 1 times [2023-11-29 00:03:02,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:03:02,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381380924] [2023-11-29 00:03:02,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:03:02,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:03:02,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:03:02,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:03:02,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:03:02,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381380924] [2023-11-29 00:03:02,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381380924] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:03:02,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:03:02,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:03:02,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739601827] [2023-11-29 00:03:02,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:03:02,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 00:03:02,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:03:02,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 00:03:02,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 00:03:02,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 68 [2023-11-29 00:03:02,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 94 transitions, 397 flow. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2023-11-29 00:03:02,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:03:02,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 68 [2023-11-29 00:03:02,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:03:08,916 INFO L124 PetriNetUnfolderBase]: 38911/67032 cut-off events. [2023-11-29 00:03:08,916 INFO L125 PetriNetUnfolderBase]: For 41276/42478 co-relation queries the response was YES. [2023-11-29 00:03:09,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169989 conditions, 67032 events. 38911/67032 cut-off events. For 41276/42478 co-relation queries the response was YES. Maximal size of possible extension queue 2468. Compared 634664 event pairs, 13965 based on Foata normal form. 3031/69922 useless extension candidates. Maximal degree in co-relation 169963. Up to 34535 conditions per place. [2023-11-29 00:03:09,261 INFO L140 encePairwiseOnDemand]: 55/68 looper letters, 118 selfloop transitions, 13 changer transitions 0/156 dead transitions. [2023-11-29 00:03:09,261 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 156 transitions, 942 flow [2023-11-29 00:03:09,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 00:03:09,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-11-29 00:03:09,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 150 transitions. [2023-11-29 00:03:09,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7352941176470589 [2023-11-29 00:03:09,263 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 150 transitions. [2023-11-29 00:03:09,263 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 150 transitions. [2023-11-29 00:03:09,263 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:03:09,263 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 150 transitions. [2023-11-29 00:03:09,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 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) [2023-11-29 00:03:09,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 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) [2023-11-29 00:03:09,265 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 68.0) internal successors, (272), 4 states have internal predecessors, (272), 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) [2023-11-29 00:03:09,265 INFO L175 Difference]: Start difference. First operand has 100 places, 94 transitions, 397 flow. Second operand 3 states and 150 transitions. [2023-11-29 00:03:09,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 156 transitions, 942 flow [2023-11-29 00:03:11,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 156 transitions, 942 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-11-29 00:03:11,375 INFO L231 Difference]: Finished difference. Result has 103 places, 102 transitions, 468 flow [2023-11-29 00:03:11,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=397, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=468, PETRI_PLACES=103, PETRI_TRANSITIONS=102} [2023-11-29 00:03:11,376 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 33 predicate places. [2023-11-29 00:03:11,376 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 102 transitions, 468 flow [2023-11-29 00:03:11,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 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) [2023-11-29 00:03:11,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:03:11,377 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] [2023-11-29 00:03:11,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-29 00:03:11,377 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-29 00:03:11,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:03:11,377 INFO L85 PathProgramCache]: Analyzing trace with hash -873329043, now seen corresponding path program 1 times [2023-11-29 00:03:11,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:03:11,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197612612] [2023-11-29 00:03:11,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:03:11,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:03:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:03:11,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:03:11,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:03:11,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197612612] [2023-11-29 00:03:11,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197612612] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:03:11,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:03:11,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 00:03:11,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016609979] [2023-11-29 00:03:11,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:03:11,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 00:03:11,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:03:11,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 00:03:11,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 00:03:11,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 68 [2023-11-29 00:03:11,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 102 transitions, 468 flow. Second operand has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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) [2023-11-29 00:03:11,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:03:11,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 68 [2023-11-29 00:03:11,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:03:14,879 INFO L124 PetriNetUnfolderBase]: 20387/36626 cut-off events. [2023-11-29 00:03:14,879 INFO L125 PetriNetUnfolderBase]: For 30790/31759 co-relation queries the response was YES. [2023-11-29 00:03:14,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103014 conditions, 36626 events. 20387/36626 cut-off events. For 30790/31759 co-relation queries the response was YES. Maximal size of possible extension queue 1163. Compared 327636 event pairs, 5649 based on Foata normal form. 1395/37913 useless extension candidates. Maximal degree in co-relation 102986. Up to 18926 conditions per place. [2023-11-29 00:03:15,065 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 104 selfloop transitions, 10 changer transitions 0/139 dead transitions. [2023-11-29 00:03:15,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 139 transitions, 853 flow [2023-11-29 00:03:15,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:03:15,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:03:15,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 160 transitions. [2023-11-29 00:03:15,067 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5882352941176471 [2023-11-29 00:03:15,067 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 160 transitions. [2023-11-29 00:03:15,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 160 transitions. [2023-11-29 00:03:15,067 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:03:15,067 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 160 transitions. [2023-11-29 00:03:15,068 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 40.0) internal successors, (160), 4 states have internal predecessors, (160), 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) [2023-11-29 00:03:15,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 68.0) internal successors, (340), 5 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:03:15,068 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 68.0) internal successors, (340), 5 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:03:15,068 INFO L175 Difference]: Start difference. First operand has 103 places, 102 transitions, 468 flow. Second operand 4 states and 160 transitions. [2023-11-29 00:03:15,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 139 transitions, 853 flow [2023-11-29 00:03:15,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 139 transitions, 836 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-29 00:03:15,799 INFO L231 Difference]: Finished difference. Result has 105 places, 102 transitions, 475 flow [2023-11-29 00:03:15,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=475, PETRI_PLACES=105, PETRI_TRANSITIONS=102} [2023-11-29 00:03:15,800 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 35 predicate places. [2023-11-29 00:03:15,800 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 102 transitions, 475 flow [2023-11-29 00:03:15,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.2) internal successors, (136), 5 states have internal predecessors, (136), 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) [2023-11-29 00:03:15,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:03:15,801 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] [2023-11-29 00:03:15,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-29 00:03:15,801 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-29 00:03:15,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:03:15,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1387097860, now seen corresponding path program 1 times [2023-11-29 00:03:15,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:03:15,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368924602] [2023-11-29 00:03:15,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:03:15,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:03:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:03:15,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:03:15,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:03:15,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368924602] [2023-11-29 00:03:15,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368924602] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:03:15,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:03:15,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:03:15,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399261841] [2023-11-29 00:03:15,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:03:15,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:03:15,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:03:15,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:03:15,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:03:15,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 68 [2023-11-29 00:03:15,944 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 102 transitions, 475 flow. Second operand has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 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) [2023-11-29 00:03:15,944 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:03:15,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 68 [2023-11-29 00:03:15,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:03:20,009 INFO L124 PetriNetUnfolderBase]: 24250/40155 cut-off events. [2023-11-29 00:03:20,009 INFO L125 PetriNetUnfolderBase]: For 35877/36789 co-relation queries the response was YES. [2023-11-29 00:03:20,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116790 conditions, 40155 events. 24250/40155 cut-off events. For 35877/36789 co-relation queries the response was YES. Maximal size of possible extension queue 1202. Compared 331878 event pairs, 4853 based on Foata normal form. 545/40622 useless extension candidates. Maximal degree in co-relation 116761. Up to 11342 conditions per place. [2023-11-29 00:03:20,244 INFO L140 encePairwiseOnDemand]: 62/68 looper letters, 202 selfloop transitions, 27 changer transitions 27/277 dead transitions. [2023-11-29 00:03:20,245 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 277 transitions, 1812 flow [2023-11-29 00:03:20,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-29 00:03:20,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-29 00:03:20,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 350 transitions. [2023-11-29 00:03:20,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6433823529411765 [2023-11-29 00:03:20,248 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 350 transitions. [2023-11-29 00:03:20,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 350 transitions. [2023-11-29 00:03:20,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:03:20,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 350 transitions. [2023-11-29 00:03:20,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 43.75) internal successors, (350), 8 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) [2023-11-29 00:03:20,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 68.0) internal successors, (612), 9 states have internal predecessors, (612), 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) [2023-11-29 00:03:20,251 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 68.0) internal successors, (612), 9 states have internal predecessors, (612), 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) [2023-11-29 00:03:20,251 INFO L175 Difference]: Start difference. First operand has 105 places, 102 transitions, 475 flow. Second operand 8 states and 350 transitions. [2023-11-29 00:03:20,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 277 transitions, 1812 flow [2023-11-29 00:03:20,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 277 transitions, 1758 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-29 00:03:20,873 INFO L231 Difference]: Finished difference. Result has 106 places, 107 transitions, 568 flow [2023-11-29 00:03:20,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=568, PETRI_PLACES=106, PETRI_TRANSITIONS=107} [2023-11-29 00:03:20,874 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 36 predicate places. [2023-11-29 00:03:20,874 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 107 transitions, 568 flow [2023-11-29 00:03:20,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.0) internal successors, (150), 6 states have internal predecessors, (150), 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) [2023-11-29 00:03:20,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:03:20,875 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] [2023-11-29 00:03:20,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-29 00:03:20,875 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-29 00:03:20,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:03:20,876 INFO L85 PathProgramCache]: Analyzing trace with hash -1283919694, now seen corresponding path program 1 times [2023-11-29 00:03:20,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:03:20,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692507478] [2023-11-29 00:03:20,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:03:20,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:03:20,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:03:20,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:03:20,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:03:20,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692507478] [2023-11-29 00:03:20,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692507478] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:03:20,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:03:20,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:03:20,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885948069] [2023-11-29 00:03:20,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:03:20,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:03:20,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:03:20,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:03:20,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:03:21,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 68 [2023-11-29 00:03:21,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 107 transitions, 568 flow. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 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) [2023-11-29 00:03:21,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:03:21,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 68 [2023-11-29 00:03:21,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:03:24,584 INFO L124 PetriNetUnfolderBase]: 22611/36768 cut-off events. [2023-11-29 00:03:24,584 INFO L125 PetriNetUnfolderBase]: For 36084/36150 co-relation queries the response was YES. [2023-11-29 00:03:24,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108621 conditions, 36768 events. 22611/36768 cut-off events. For 36084/36150 co-relation queries the response was YES. Maximal size of possible extension queue 995. Compared 290353 event pairs, 4720 based on Foata normal form. 650/37388 useless extension candidates. Maximal degree in co-relation 108593. Up to 7735 conditions per place. [2023-11-29 00:03:24,722 INFO L140 encePairwiseOnDemand]: 56/68 looper letters, 204 selfloop transitions, 41 changer transitions 33/295 dead transitions. [2023-11-29 00:03:24,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 295 transitions, 1911 flow [2023-11-29 00:03:24,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 00:03:24,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-11-29 00:03:24,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 447 transitions. [2023-11-29 00:03:24,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5477941176470589 [2023-11-29 00:03:24,725 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 447 transitions. [2023-11-29 00:03:24,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 447 transitions. [2023-11-29 00:03:24,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:03:24,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 447 transitions. [2023-11-29 00:03:24,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 37.25) internal successors, (447), 12 states have internal predecessors, (447), 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) [2023-11-29 00:03:24,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 68.0) internal successors, (884), 13 states have internal predecessors, (884), 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) [2023-11-29 00:03:24,730 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 68.0) internal successors, (884), 13 states have internal predecessors, (884), 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) [2023-11-29 00:03:24,730 INFO L175 Difference]: Start difference. First operand has 106 places, 107 transitions, 568 flow. Second operand 12 states and 447 transitions. [2023-11-29 00:03:24,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 295 transitions, 1911 flow [2023-11-29 00:03:24,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 295 transitions, 1908 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-11-29 00:03:24,943 INFO L231 Difference]: Finished difference. Result has 119 places, 119 transitions, 742 flow [2023-11-29 00:03:24,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=742, PETRI_PLACES=119, PETRI_TRANSITIONS=119} [2023-11-29 00:03:24,944 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 49 predicate places. [2023-11-29 00:03:24,944 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 119 transitions, 742 flow [2023-11-29 00:03:24,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 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) [2023-11-29 00:03:24,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:03:24,944 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:03:24,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-29 00:03:24,945 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-29 00:03:24,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:03:24,945 INFO L85 PathProgramCache]: Analyzing trace with hash 163774449, now seen corresponding path program 1 times [2023-11-29 00:03:24,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:03:24,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989364217] [2023-11-29 00:03:24,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:03:24,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:03:24,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:03:25,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:03:25,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:03:25,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989364217] [2023-11-29 00:03:25,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989364217] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:03:25,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:03:25,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-29 00:03:25,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541458786] [2023-11-29 00:03:25,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:03:25,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-29 00:03:25,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:03:25,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-29 00:03:25,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-29 00:03:25,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 22 out of 68 [2023-11-29 00:03:25,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 119 transitions, 742 flow. Second operand has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 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) [2023-11-29 00:03:25,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:03:25,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 22 of 68 [2023-11-29 00:03:25,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:03:29,119 INFO L124 PetriNetUnfolderBase]: 21659/35736 cut-off events. [2023-11-29 00:03:29,119 INFO L125 PetriNetUnfolderBase]: For 53544/54033 co-relation queries the response was YES. [2023-11-29 00:03:29,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113966 conditions, 35736 events. 21659/35736 cut-off events. For 53544/54033 co-relation queries the response was YES. Maximal size of possible extension queue 939. Compared 283313 event pairs, 5623 based on Foata normal form. 422/36119 useless extension candidates. Maximal degree in co-relation 113934. Up to 7264 conditions per place. [2023-11-29 00:03:29,254 INFO L140 encePairwiseOnDemand]: 61/68 looper letters, 107 selfloop transitions, 20 changer transitions 150/293 dead transitions. [2023-11-29 00:03:29,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 293 transitions, 2117 flow [2023-11-29 00:03:29,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-29 00:03:29,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-11-29 00:03:29,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 438 transitions. [2023-11-29 00:03:29,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5855614973262032 [2023-11-29 00:03:29,256 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 438 transitions. [2023-11-29 00:03:29,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 438 transitions. [2023-11-29 00:03:29,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:03:29,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 438 transitions. [2023-11-29 00:03:29,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 39.81818181818182) internal successors, (438), 11 states have internal predecessors, (438), 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) [2023-11-29 00:03:29,259 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 68.0) internal successors, (816), 12 states have internal predecessors, (816), 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) [2023-11-29 00:03:29,259 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 68.0) internal successors, (816), 12 states have internal predecessors, (816), 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) [2023-11-29 00:03:29,259 INFO L175 Difference]: Start difference. First operand has 119 places, 119 transitions, 742 flow. Second operand 11 states and 438 transitions. [2023-11-29 00:03:29,260 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 293 transitions, 2117 flow [2023-11-29 00:03:29,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 293 transitions, 2052 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-11-29 00:03:29,701 INFO L231 Difference]: Finished difference. Result has 121 places, 82 transitions, 457 flow [2023-11-29 00:03:29,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=457, PETRI_PLACES=121, PETRI_TRANSITIONS=82} [2023-11-29 00:03:29,702 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 51 predicate places. [2023-11-29 00:03:29,702 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 82 transitions, 457 flow [2023-11-29 00:03:29,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 25.833333333333332) internal successors, (155), 6 states have internal predecessors, (155), 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) [2023-11-29 00:03:29,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-29 00:03:29,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:03:29,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-29 00:03:29,702 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 6 more)] === [2023-11-29 00:03:29,703 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 00:03:29,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1082865990, now seen corresponding path program 1 times [2023-11-29 00:03:29,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 00:03:29,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812440249] [2023-11-29 00:03:29,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 00:03:29,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 00:03:29,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 00:03:29,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 00:03:29,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 00:03:29,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812440249] [2023-11-29 00:03:29,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812440249] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 00:03:29,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 00:03:29,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 00:03:29,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143368182] [2023-11-29 00:03:29,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 00:03:29,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 00:03:29,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 00:03:29,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 00:03:29,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-29 00:03:29,884 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 24 out of 68 [2023-11-29 00:03:29,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 82 transitions, 457 flow. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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) [2023-11-29 00:03:29,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-29 00:03:29,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 24 of 68 [2023-11-29 00:03:29,885 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-29 00:03:30,320 INFO L124 PetriNetUnfolderBase]: 1444/2503 cut-off events. [2023-11-29 00:03:30,320 INFO L125 PetriNetUnfolderBase]: For 2626/2692 co-relation queries the response was YES. [2023-11-29 00:03:30,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7255 conditions, 2503 events. 1444/2503 cut-off events. For 2626/2692 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 13522 event pairs, 509 based on Foata normal form. 114/2610 useless extension candidates. Maximal degree in co-relation 7240. Up to 1376 conditions per place. [2023-11-29 00:03:30,325 INFO L140 encePairwiseOnDemand]: 58/68 looper letters, 0 selfloop transitions, 0 changer transitions 82/82 dead transitions. [2023-11-29 00:03:30,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 82 transitions, 553 flow [2023-11-29 00:03:30,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 00:03:30,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-29 00:03:30,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 148 transitions. [2023-11-29 00:03:30,326 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5441176470588235 [2023-11-29 00:03:30,327 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 148 transitions. [2023-11-29 00:03:30,327 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 148 transitions. [2023-11-29 00:03:30,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-29 00:03:30,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 148 transitions. [2023-11-29 00:03:30,328 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 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) [2023-11-29 00:03:30,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 68.0) internal successors, (340), 5 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:03:30,329 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 68.0) internal successors, (340), 5 states have internal predecessors, (340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 00:03:30,329 INFO L175 Difference]: Start difference. First operand has 121 places, 82 transitions, 457 flow. Second operand 4 states and 148 transitions. [2023-11-29 00:03:30,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 82 transitions, 553 flow [2023-11-29 00:03:30,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 82 transitions, 476 flow, removed 2 selfloop flow, removed 19 redundant places. [2023-11-29 00:03:30,338 INFO L231 Difference]: Finished difference. Result has 76 places, 0 transitions, 0 flow [2023-11-29 00:03:30,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=76, PETRI_TRANSITIONS=0} [2023-11-29 00:03:30,339 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 6 predicate places. [2023-11-29 00:03:30,339 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 0 transitions, 0 flow [2023-11-29 00:03:30,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 4 states have internal predecessors, (122), 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) [2023-11-29 00:03:30,342 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (8 of 9 remaining) [2023-11-29 00:03:30,342 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 9 remaining) [2023-11-29 00:03:30,342 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 9 remaining) [2023-11-29 00:03:30,343 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 9 remaining) [2023-11-29 00:03:30,343 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 9 remaining) [2023-11-29 00:03:30,343 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 9 remaining) [2023-11-29 00:03:30,343 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 9 remaining) [2023-11-29 00:03:30,343 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 9 remaining) [2023-11-29 00:03:30,344 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t3_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 9 remaining) [2023-11-29 00:03:30,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-29 00:03:30,344 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 00:03:30,350 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-11-29 00:03:30,350 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-29 00:03:30,355 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 12:03:30 BasicIcfg [2023-11-29 00:03:30,355 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-29 00:03:30,356 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-29 00:03:30,356 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-29 00:03:30,356 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-29 00:03:30,357 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 12:02:38" (3/4) ... [2023-11-29 00:03:30,358 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-11-29 00:03:30,361 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t2_fun [2023-11-29 00:03:30,361 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t3_fun [2023-11-29 00:03:30,362 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure t_fun [2023-11-29 00:03:30,366 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 48 nodes and edges [2023-11-29 00:03:30,366 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2023-11-29 00:03:30,366 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2023-11-29 00:03:30,367 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-11-29 00:03:30,446 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8514b27a-8714-49fc-a926-93df2ec9cd2c/bin/uautomizer-verify-BQ2R08f2Ya/witness.graphml [2023-11-29 00:03:30,447 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8514b27a-8714-49fc-a926-93df2ec9cd2c/bin/uautomizer-verify-BQ2R08f2Ya/witness.yml [2023-11-29 00:03:30,447 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-29 00:03:30,448 INFO L158 Benchmark]: Toolchain (without parser) took 53406.42ms. Allocated memory was 136.3MB in the beginning and 8.5GB in the end (delta: 8.3GB). Free memory was 90.5MB in the beginning and 5.9GB in the end (delta: -5.8GB). Peak memory consumption was 2.5GB. Max. memory is 16.1GB. [2023-11-29 00:03:30,448 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 100.7MB. Free memory is still 51.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-29 00:03:30,448 INFO L158 Benchmark]: CACSL2BoogieTranslator took 499.76ms. Allocated memory is still 136.3MB. Free memory was 90.1MB in the beginning and 69.9MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2023-11-29 00:03:30,449 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.80ms. Allocated memory is still 136.3MB. Free memory was 69.9MB in the beginning and 67.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-29 00:03:30,449 INFO L158 Benchmark]: Boogie Preprocessor took 73.97ms. Allocated memory is still 136.3MB. Free memory was 67.5MB in the beginning and 106.0MB in the end (delta: -38.5MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. [2023-11-29 00:03:30,450 INFO L158 Benchmark]: RCFGBuilder took 607.39ms. Allocated memory is still 136.3MB. Free memory was 106.0MB in the beginning and 62.1MB in the end (delta: 43.8MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. [2023-11-29 00:03:30,450 INFO L158 Benchmark]: TraceAbstraction took 52077.81ms. Allocated memory was 136.3MB in the beginning and 8.5GB in the end (delta: 8.3GB). Free memory was 61.6MB in the beginning and 5.9GB in the end (delta: -5.8GB). Peak memory consumption was 3.2GB. Max. memory is 16.1GB. [2023-11-29 00:03:30,450 INFO L158 Benchmark]: Witness Printer took 91.15ms. Allocated memory is still 8.5GB. Free memory was 5.9GB in the beginning and 5.9GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2023-11-29 00:03:30,452 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 100.7MB. Free memory is still 51.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 499.76ms. Allocated memory is still 136.3MB. Free memory was 90.1MB in the beginning and 69.9MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 49.80ms. Allocated memory is still 136.3MB. Free memory was 69.9MB in the beginning and 67.5MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 73.97ms. Allocated memory is still 136.3MB. Free memory was 67.5MB in the beginning and 106.0MB in the end (delta: -38.5MB). Peak memory consumption was 6.9MB. Max. memory is 16.1GB. * RCFGBuilder took 607.39ms. Allocated memory is still 136.3MB. Free memory was 106.0MB in the beginning and 62.1MB in the end (delta: 43.8MB). Peak memory consumption was 44.0MB. Max. memory is 16.1GB. * TraceAbstraction took 52077.81ms. Allocated memory was 136.3MB in the beginning and 8.5GB in the end (delta: 8.3GB). Free memory was 61.6MB in the beginning and 5.9GB in the end (delta: -5.8GB). Peak memory consumption was 3.2GB. Max. memory is 16.1GB. * Witness Printer took 91.15ms. Allocated memory is still 8.5GB. Free memory was 5.9GB in the beginning and 5.9GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 107 locations, 9 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: 52.0s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 50.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1013 SdHoareTripleChecker+Valid, 2.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 997 mSDsluCounter, 83 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 57 mSDsCounter, 54 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2743 IncrementalHoareTripleChecker+Invalid, 2797 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 54 mSolverCounterUnsat, 26 mSDtfsCounter, 2743 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=742occurred in iteration=7, InterpolantAutomatonStates: 66, 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, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 192 NumberOfCodeBlocks, 192 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 183 ConstructedInterpolants, 0 QuantifiedInterpolants, 700 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-11-29 00:03:30,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8514b27a-8714-49fc-a926-93df2ec9cd2c/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (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