./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu --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 2c579ed20cf5b381709dcc4ef9fbcf839f80c68ac017a29b947b11bd3a57dd56 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 07:49:11,959 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 07:49:12,061 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-19 07:49:12,067 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 07:49:12,068 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 07:49:12,098 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 07:49:12,099 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 07:49:12,099 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 07:49:12,100 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 07:49:12,101 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 07:49:12,102 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-19 07:49:12,103 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-19 07:49:12,104 INFO L153 SettingsManager]: * Use SBE=true [2023-11-19 07:49:12,104 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 07:49:12,105 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 07:49:12,106 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 07:49:12,106 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 07:49:12,107 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 07:49:12,108 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 07:49:12,108 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 07:49:12,109 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 07:49:12,110 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 07:49:12,110 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 07:49:12,111 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 07:49:12,112 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 07:49:12,112 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 07:49:12,113 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-19 07:49:12,114 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 07:49:12,114 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:49:12,115 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 07:49:12,115 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 07:49:12,116 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 07:49:12,117 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-19 07:49:12,117 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 07:49:12,118 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-19 07:49:12,118 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 07:49:12,119 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-19 07:49:12,119 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 07:49:12,120 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-19 07:49:12,120 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_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2c579ed20cf5b381709dcc4ef9fbcf839f80c68ac017a29b947b11bd3a57dd56 [2023-11-19 07:49:12,418 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 07:49:12,444 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 07:49:12,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 07:49:12,448 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 07:49:12,449 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 07:49:12,450 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/../../sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2023-11-19 07:49:15,688 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 07:49:15,891 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 07:49:15,892 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c [2023-11-19 07:49:15,902 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/data/e61d8df28/bdae9016812848549f346b818c2f4b1a/FLAG73b277645 [2023-11-19 07:49:15,915 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/data/e61d8df28/bdae9016812848549f346b818c2f4b1a [2023-11-19 07:49:15,918 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 07:49:15,920 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 07:49:15,922 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 07:49:15,922 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 07:49:15,927 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 07:49:15,928 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:49:15" (1/1) ... [2023-11-19 07:49:15,929 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4014704b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:15, skipping insertion in model container [2023-11-19 07:49:15,930 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:49:15" (1/1) ... [2023-11-19 07:49:15,955 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 07:49:16,134 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_980688ab-479a-4741-9bf2-d625630dba56/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c[2644,2657] [2023-11-19 07:49:16,143 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:49:16,154 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 07:49:16,191 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_980688ab-479a-4741-9bf2-d625630dba56/sv-benchmarks/c/weaver/loop-tiling-eq.wvr.c[2644,2657] [2023-11-19 07:49:16,210 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 07:49:16,236 INFO L206 MainTranslator]: Completed translation [2023-11-19 07:49:16,236 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:16 WrapperNode [2023-11-19 07:49:16,236 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 07:49:16,237 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 07:49:16,237 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 07:49:16,238 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 07:49:16,245 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:16" (1/1) ... [2023-11-19 07:49:16,253 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:16" (1/1) ... [2023-11-19 07:49:16,281 INFO L138 Inliner]: procedures = 25, calls = 41, calls flagged for inlining = 13, calls inlined = 17, statements flattened = 196 [2023-11-19 07:49:16,282 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 07:49:16,282 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 07:49:16,282 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 07:49:16,283 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 07:49:16,292 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:16" (1/1) ... [2023-11-19 07:49:16,292 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:16" (1/1) ... [2023-11-19 07:49:16,297 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:16" (1/1) ... [2023-11-19 07:49:16,298 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:16" (1/1) ... [2023-11-19 07:49:16,308 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:16" (1/1) ... [2023-11-19 07:49:16,313 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:16" (1/1) ... [2023-11-19 07:49:16,316 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:16" (1/1) ... [2023-11-19 07:49:16,318 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:16" (1/1) ... [2023-11-19 07:49:16,322 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 07:49:16,323 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 07:49:16,323 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 07:49:16,324 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 07:49:16,326 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:16" (1/1) ... [2023-11-19 07:49:16,346 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 07:49:16,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:16,370 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 07:49:16,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 07:49:16,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 07:49:16,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-19 07:49:16,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 07:49:16,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 07:49:16,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 07:49:16,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-19 07:49:16,416 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-11-19 07:49:16,416 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-11-19 07:49:16,416 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-11-19 07:49:16,416 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-11-19 07:49:16,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 07:49:16,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-19 07:49:16,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 07:49:16,417 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 07:49:16,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 07:49:16,419 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 07:49:16,546 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 07:49:16,548 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 07:49:17,045 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 07:49:17,062 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 07:49:17,062 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-11-19 07:49:17,078 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:49:17 BoogieIcfgContainer [2023-11-19 07:49:17,078 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 07:49:17,083 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 07:49:17,083 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 07:49:17,088 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 07:49:17,089 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:49:15" (1/3) ... [2023-11-19 07:49:17,090 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3167309d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:49:17, skipping insertion in model container [2023-11-19 07:49:17,090 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:49:16" (2/3) ... [2023-11-19 07:49:17,091 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3167309d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:49:17, skipping insertion in model container [2023-11-19 07:49:17,093 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:49:17" (3/3) ... [2023-11-19 07:49:17,095 INFO L112 eAbstractionObserver]: Analyzing ICFG loop-tiling-eq.wvr.c [2023-11-19 07:49:17,123 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 07:49:17,131 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 07:49:17,131 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-19 07:49:17,131 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 07:49:17,250 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-11-19 07:49:17,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 272 places, 291 transitions, 596 flow [2023-11-19 07:49:17,439 INFO L124 PetriNetUnfolderBase]: 26/289 cut-off events. [2023-11-19 07:49:17,439 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:49:17,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 289 events. 26/289 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 302 event pairs, 0 based on Foata normal form. 0/262 useless extension candidates. Maximal degree in co-relation 218. Up to 2 conditions per place. [2023-11-19 07:49:17,445 INFO L82 GeneralOperation]: Start removeDead. Operand has 272 places, 291 transitions, 596 flow [2023-11-19 07:49:17,455 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 261 places, 280 transitions, 572 flow [2023-11-19 07:49:17,459 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-11-19 07:49:17,470 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 261 places, 280 transitions, 572 flow [2023-11-19 07:49:17,474 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 261 places, 280 transitions, 572 flow [2023-11-19 07:49:17,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 261 places, 280 transitions, 572 flow [2023-11-19 07:49:17,559 INFO L124 PetriNetUnfolderBase]: 26/280 cut-off events. [2023-11-19 07:49:17,560 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:49:17,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 280 events. 26/280 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 299 event pairs, 0 based on Foata normal form. 0/254 useless extension candidates. Maximal degree in co-relation 218. Up to 2 conditions per place. [2023-11-19 07:49:17,567 INFO L119 LiptonReduction]: Number of co-enabled transitions 1212 [2023-11-19 07:49:31,543 INFO L134 LiptonReduction]: Checked pairs total: 1678 [2023-11-19 07:49:31,543 INFO L136 LiptonReduction]: Total number of compositions: 317 [2023-11-19 07:49:31,559 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 07:49:31,565 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;@6f9707e8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-19 07:49:31,566 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-11-19 07:49:31,573 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-11-19 07:49:31,573 INFO L124 PetriNetUnfolderBase]: 7/27 cut-off events. [2023-11-19 07:49:31,574 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 07:49:31,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:31,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:31,575 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-19 07:49:31,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:31,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1863382562, now seen corresponding path program 1 times [2023-11-19 07:49:31,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:31,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636939033] [2023-11-19 07:49:31,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:31,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:31,714 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:49:31,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [744548727] [2023-11-19 07:49:31,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:31,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:31,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:31,718 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:31,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-19 07:49:31,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:31,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-19 07:49:31,889 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:31,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:31,967 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:49:31,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:31,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636939033] [2023-11-19 07:49:31,968 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:49:31,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744548727] [2023-11-19 07:49:31,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744548727] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:31,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:31,970 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:49:31,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234614263] [2023-11-19 07:49:31,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:31,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:49:31,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:32,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:49:32,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:49:32,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 608 [2023-11-19 07:49:32,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 28 transitions, 68 flow. Second operand has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 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) [2023-11-19 07:49:32,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:32,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 608 [2023-11-19 07:49:32,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:32,323 INFO L124 PetriNetUnfolderBase]: 183/326 cut-off events. [2023-11-19 07:49:32,323 INFO L125 PetriNetUnfolderBase]: For 28/28 co-relation queries the response was YES. [2023-11-19 07:49:32,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 672 conditions, 326 events. 183/326 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1098 event pairs, 114 based on Foata normal form. 1/256 useless extension candidates. Maximal degree in co-relation 264. Up to 159 conditions per place. [2023-11-19 07:49:32,330 INFO L140 encePairwiseOnDemand]: 604/608 looper letters, 28 selfloop transitions, 2 changer transitions 18/49 dead transitions. [2023-11-19 07:49:32,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 49 transitions, 218 flow [2023-11-19 07:49:32,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-19 07:49:32,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-11-19 07:49:32,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1081 transitions. [2023-11-19 07:49:32,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44449013157894735 [2023-11-19 07:49:32,359 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1081 transitions. [2023-11-19 07:49:32,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1081 transitions. [2023-11-19 07:49:32,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:32,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1081 transitions. [2023-11-19 07:49:32,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 270.25) internal successors, (1081), 4 states have internal predecessors, (1081), 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) [2023-11-19 07:49:32,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 608.0) internal successors, (3040), 5 states have internal predecessors, (3040), 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) [2023-11-19 07:49:32,389 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 608.0) internal successors, (3040), 5 states have internal predecessors, (3040), 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) [2023-11-19 07:49:32,391 INFO L175 Difference]: Start difference. First operand has 28 places, 28 transitions, 68 flow. Second operand 4 states and 1081 transitions. [2023-11-19 07:49:32,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 49 transitions, 218 flow [2023-11-19 07:49:32,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 49 transitions, 202 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-11-19 07:49:32,398 INFO L231 Difference]: Finished difference. Result has 29 places, 29 transitions, 74 flow [2023-11-19 07:49:32,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=608, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=74, PETRI_PLACES=29, PETRI_TRANSITIONS=29} [2023-11-19 07:49:32,405 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2023-11-19 07:49:32,406 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 29 transitions, 74 flow [2023-11-19 07:49:32,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 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) [2023-11-19 07:49:32,407 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:32,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:32,435 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:32,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2023-11-19 07:49:32,626 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-19 07:49:32,626 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:32,626 INFO L85 PathProgramCache]: Analyzing trace with hash -114617912, now seen corresponding path program 1 times [2023-11-19 07:49:32,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:32,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288758335] [2023-11-19 07:49:32,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:32,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:32,655 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:49:32,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2055426482] [2023-11-19 07:49:32,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:32,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:32,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:32,659 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:32,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-19 07:49:32,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:32,786 INFO L262 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-19 07:49:32,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:32,854 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:32,855 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:49:32,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:32,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:32,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288758335] [2023-11-19 07:49:32,896 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:49:32,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055426482] [2023-11-19 07:49:32,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055426482] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-19 07:49:32,898 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-19 07:49:32,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2023-11-19 07:49:32,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866476279] [2023-11-19 07:49:32,901 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-19 07:49:32,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-19 07:49:32,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:32,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-19 07:49:32,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-19 07:49:33,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 253 out of 608 [2023-11-19 07:49:33,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 29 transitions, 74 flow. Second operand has 6 states, 6 states have (on average 256.5) internal successors, (1539), 6 states have internal predecessors, (1539), 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) [2023-11-19 07:49:33,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:33,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 253 of 608 [2023-11-19 07:49:33,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:33,211 INFO L124 PetriNetUnfolderBase]: 146/263 cut-off events. [2023-11-19 07:49:33,212 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 07:49:33,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 522 conditions, 263 events. 146/263 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 827 event pairs, 33 based on Foata normal form. 0/214 useless extension candidates. Maximal degree in co-relation 514. Up to 92 conditions per place. [2023-11-19 07:49:33,214 INFO L140 encePairwiseOnDemand]: 601/608 looper letters, 40 selfloop transitions, 7 changer transitions 0/48 dead transitions. [2023-11-19 07:49:33,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 48 transitions, 208 flow [2023-11-19 07:49:33,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-19 07:49:33,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-11-19 07:49:33,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1818 transitions. [2023-11-19 07:49:33,222 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42716165413533835 [2023-11-19 07:49:33,222 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1818 transitions. [2023-11-19 07:49:33,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1818 transitions. [2023-11-19 07:49:33,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:33,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1818 transitions. [2023-11-19 07:49:33,230 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 259.7142857142857) internal successors, (1818), 7 states have internal predecessors, (1818), 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) [2023-11-19 07:49:33,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 608.0) internal successors, (4864), 8 states have internal predecessors, (4864), 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) [2023-11-19 07:49:33,244 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 608.0) internal successors, (4864), 8 states have internal predecessors, (4864), 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) [2023-11-19 07:49:33,244 INFO L175 Difference]: Start difference. First operand has 29 places, 29 transitions, 74 flow. Second operand 7 states and 1818 transitions. [2023-11-19 07:49:33,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 48 transitions, 208 flow [2023-11-19 07:49:33,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 48 transitions, 204 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-11-19 07:49:33,247 INFO L231 Difference]: Finished difference. Result has 35 places, 32 transitions, 105 flow [2023-11-19 07:49:33,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=608, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=105, PETRI_PLACES=35, PETRI_TRANSITIONS=32} [2023-11-19 07:49:33,248 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 7 predicate places. [2023-11-19 07:49:33,248 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 32 transitions, 105 flow [2023-11-19 07:49:33,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 256.5) internal successors, (1539), 6 states have internal predecessors, (1539), 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) [2023-11-19 07:49:33,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:33,250 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] [2023-11-19 07:49:33,276 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:33,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:33,471 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-19 07:49:33,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:33,472 INFO L85 PathProgramCache]: Analyzing trace with hash 985319896, now seen corresponding path program 1 times [2023-11-19 07:49:33,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:33,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564397498] [2023-11-19 07:49:33,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:33,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:33,503 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:49:33,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1698856782] [2023-11-19 07:49:33,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:33,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:33,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:33,506 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:33,513 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-19 07:49:33,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:33,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-19 07:49:33,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:33,683 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:49:33,683 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:49:33,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:33,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564397498] [2023-11-19 07:49:33,684 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:49:33,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698856782] [2023-11-19 07:49:33,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1698856782] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:33,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:33,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 07:49:33,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036335857] [2023-11-19 07:49:33,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:33,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-19 07:49:33,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:33,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-19 07:49:33,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-19 07:49:33,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 247 out of 608 [2023-11-19 07:49:33,828 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 105 flow. Second operand has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 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) [2023-11-19 07:49:33,828 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:33,829 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 247 of 608 [2023-11-19 07:49:33,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:34,017 INFO L124 PetriNetUnfolderBase]: 291/517 cut-off events. [2023-11-19 07:49:34,017 INFO L125 PetriNetUnfolderBase]: For 99/99 co-relation queries the response was YES. [2023-11-19 07:49:34,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1213 conditions, 517 events. 291/517 cut-off events. For 99/99 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1947 event pairs, 186 based on Foata normal form. 1/480 useless extension candidates. Maximal degree in co-relation 1164. Up to 244 conditions per place. [2023-11-19 07:49:34,022 INFO L140 encePairwiseOnDemand]: 604/608 looper letters, 29 selfloop transitions, 3 changer transitions 27/60 dead transitions. [2023-11-19 07:49:34,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 60 transitions, 316 flow [2023-11-19 07:49:34,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:49:34,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:49:34,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1288 transitions. [2023-11-19 07:49:34,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4236842105263158 [2023-11-19 07:49:34,029 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1288 transitions. [2023-11-19 07:49:34,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1288 transitions. [2023-11-19 07:49:34,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:34,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1288 transitions. [2023-11-19 07:49:34,035 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 257.6) internal successors, (1288), 5 states have internal predecessors, (1288), 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) [2023-11-19 07:49:34,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 608.0) internal successors, (3648), 6 states have internal predecessors, (3648), 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) [2023-11-19 07:49:34,047 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 608.0) internal successors, (3648), 6 states have internal predecessors, (3648), 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) [2023-11-19 07:49:34,047 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 105 flow. Second operand 5 states and 1288 transitions. [2023-11-19 07:49:34,047 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 60 transitions, 316 flow [2023-11-19 07:49:34,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 60 transitions, 315 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:49:34,053 INFO L231 Difference]: Finished difference. Result has 41 places, 33 transitions, 127 flow [2023-11-19 07:49:34,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=608, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=127, PETRI_PLACES=41, PETRI_TRANSITIONS=33} [2023-11-19 07:49:34,056 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 13 predicate places. [2023-11-19 07:49:34,056 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 33 transitions, 127 flow [2023-11-19 07:49:34,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 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) [2023-11-19 07:49:34,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:34,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:34,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:34,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:34,280 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-19 07:49:34,281 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:34,281 INFO L85 PathProgramCache]: Analyzing trace with hash 885026496, now seen corresponding path program 1 times [2023-11-19 07:49:34,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:34,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003630401] [2023-11-19 07:49:34,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:34,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:34,310 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:49:34,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1170195977] [2023-11-19 07:49:34,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:34,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:34,312 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:34,313 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:34,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-19 07:49:34,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:34,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:49:34,451 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:34,525 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:34,526 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:49:34,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 07:49:34,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:34,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003630401] [2023-11-19 07:49:34,587 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:49:34,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1170195977] [2023-11-19 07:49:34,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1170195977] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:49:34,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:49:34,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2023-11-19 07:49:34,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034937612] [2023-11-19 07:49:34,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:34,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:49:34,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:34,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:49:34,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2023-11-19 07:49:34,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 236 out of 608 [2023-11-19 07:49:34,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 127 flow. Second operand has 5 states, 5 states have (on average 240.2) internal successors, (1201), 5 states have internal predecessors, (1201), 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) [2023-11-19 07:49:34,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:34,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 236 of 608 [2023-11-19 07:49:34,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:34,908 INFO L124 PetriNetUnfolderBase]: 176/319 cut-off events. [2023-11-19 07:49:34,908 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2023-11-19 07:49:34,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 753 conditions, 319 events. 176/319 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 907 event pairs, 69 based on Foata normal form. 20/315 useless extension candidates. Maximal degree in co-relation 740. Up to 178 conditions per place. [2023-11-19 07:49:34,911 INFO L140 encePairwiseOnDemand]: 599/608 looper letters, 37 selfloop transitions, 9 changer transitions 0/47 dead transitions. [2023-11-19 07:49:34,911 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 47 transitions, 261 flow [2023-11-19 07:49:34,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-19 07:49:34,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-11-19 07:49:34,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1222 transitions. [2023-11-19 07:49:34,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4019736842105263 [2023-11-19 07:49:34,916 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1222 transitions. [2023-11-19 07:49:34,916 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1222 transitions. [2023-11-19 07:49:34,917 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:34,917 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1222 transitions. [2023-11-19 07:49:34,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 244.4) internal successors, (1222), 5 states have internal predecessors, (1222), 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) [2023-11-19 07:49:34,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 608.0) internal successors, (3648), 6 states have internal predecessors, (3648), 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) [2023-11-19 07:49:34,930 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 608.0) internal successors, (3648), 6 states have internal predecessors, (3648), 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) [2023-11-19 07:49:34,930 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 127 flow. Second operand 5 states and 1222 transitions. [2023-11-19 07:49:34,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 47 transitions, 261 flow [2023-11-19 07:49:34,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 47 transitions, 246 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-11-19 07:49:34,934 INFO L231 Difference]: Finished difference. Result has 44 places, 38 transitions, 181 flow [2023-11-19 07:49:34,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=608, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=181, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2023-11-19 07:49:34,935 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 16 predicate places. [2023-11-19 07:49:34,935 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 181 flow [2023-11-19 07:49:34,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 240.2) internal successors, (1201), 5 states have internal predecessors, (1201), 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) [2023-11-19 07:49:34,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:34,936 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:34,960 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:35,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:35,152 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-19 07:49:35,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:35,153 INFO L85 PathProgramCache]: Analyzing trace with hash 2086727846, now seen corresponding path program 1 times [2023-11-19 07:49:35,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:35,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312474219] [2023-11-19 07:49:35,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:35,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:35,188 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:49:35,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1693131619] [2023-11-19 07:49:35,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:35,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:35,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:35,192 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:35,212 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-19 07:49:35,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:35,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-19 07:49:35,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:35,655 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:49:35,655 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:49:35,876 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 07:49:35,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:35,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312474219] [2023-11-19 07:49:35,877 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:49:35,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693131619] [2023-11-19 07:49:35,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693131619] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-19 07:49:35,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-19 07:49:35,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2023-11-19 07:49:35,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078370662] [2023-11-19 07:49:35,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:35,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-19 07:49:35,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:35,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-19 07:49:35,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2023-11-19 07:49:36,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 244 out of 608 [2023-11-19 07:49:36,139 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 181 flow. Second operand has 8 states, 8 states have (on average 246.875) internal successors, (1975), 8 states have internal predecessors, (1975), 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) [2023-11-19 07:49:36,139 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:36,139 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 244 of 608 [2023-11-19 07:49:36,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:36,440 INFO L124 PetriNetUnfolderBase]: 270/480 cut-off events. [2023-11-19 07:49:36,440 INFO L125 PetriNetUnfolderBase]: For 502/502 co-relation queries the response was YES. [2023-11-19 07:49:36,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1399 conditions, 480 events. 270/480 cut-off events. For 502/502 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1775 event pairs, 87 based on Foata normal form. 9/444 useless extension candidates. Maximal degree in co-relation 1342. Up to 210 conditions per place. [2023-11-19 07:49:36,445 INFO L140 encePairwiseOnDemand]: 598/608 looper letters, 43 selfloop transitions, 7 changer transitions 19/70 dead transitions. [2023-11-19 07:49:36,445 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 70 transitions, 468 flow [2023-11-19 07:49:36,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-19 07:49:36,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-11-19 07:49:36,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2008 transitions. [2023-11-19 07:49:36,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4128289473684211 [2023-11-19 07:49:36,455 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2008 transitions. [2023-11-19 07:49:36,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2008 transitions. [2023-11-19 07:49:36,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:36,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2008 transitions. [2023-11-19 07:49:36,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 251.0) internal successors, (2008), 8 states have internal predecessors, (2008), 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) [2023-11-19 07:49:36,474 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 608.0) internal successors, (5472), 9 states have internal predecessors, (5472), 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) [2023-11-19 07:49:36,476 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 608.0) internal successors, (5472), 9 states have internal predecessors, (5472), 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) [2023-11-19 07:49:36,477 INFO L175 Difference]: Start difference. First operand has 44 places, 38 transitions, 181 flow. Second operand 8 states and 2008 transitions. [2023-11-19 07:49:36,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 70 transitions, 468 flow [2023-11-19 07:49:36,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 70 transitions, 456 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-11-19 07:49:36,483 INFO L231 Difference]: Finished difference. Result has 54 places, 39 transitions, 213 flow [2023-11-19 07:49:36,484 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=608, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=213, PETRI_PLACES=54, PETRI_TRANSITIONS=39} [2023-11-19 07:49:36,487 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 26 predicate places. [2023-11-19 07:49:36,487 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 39 transitions, 213 flow [2023-11-19 07:49:36,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 246.875) internal successors, (1975), 8 states have internal predecessors, (1975), 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) [2023-11-19 07:49:36,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:36,489 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] [2023-11-19 07:49:36,515 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:36,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:36,703 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-19 07:49:36,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:36,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1499175593, now seen corresponding path program 1 times [2023-11-19 07:49:36,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:36,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406042173] [2023-11-19 07:49:36,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:36,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:36,730 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:49:36,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [547354768] [2023-11-19 07:49:36,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:36,731 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:36,731 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:36,732 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:36,760 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-19 07:49:36,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:36,896 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-19 07:49:36,902 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:36,938 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-19 07:49:36,938 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-19 07:49:36,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-19 07:49:36,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406042173] [2023-11-19 07:49:36,938 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-19 07:49:36,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [547354768] [2023-11-19 07:49:36,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [547354768] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 07:49:36,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 07:49:36,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-19 07:49:36,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485245968] [2023-11-19 07:49:36,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 07:49:36,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-19 07:49:36,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-19 07:49:36,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-19 07:49:36,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-19 07:49:37,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 243 out of 608 [2023-11-19 07:49:37,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 39 transitions, 213 flow. Second operand has 5 states, 5 states have (on average 248.0) internal successors, (1240), 5 states have internal predecessors, (1240), 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) [2023-11-19 07:49:37,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-11-19 07:49:37,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 243 of 608 [2023-11-19 07:49:37,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-11-19 07:49:37,370 INFO L124 PetriNetUnfolderBase]: 267/491 cut-off events. [2023-11-19 07:49:37,371 INFO L125 PetriNetUnfolderBase]: For 616/616 co-relation queries the response was YES. [2023-11-19 07:49:37,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1665 conditions, 491 events. 267/491 cut-off events. For 616/616 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1588 event pairs, 156 based on Foata normal form. 22/512 useless extension candidates. Maximal degree in co-relation 1207. Up to 352 conditions per place. [2023-11-19 07:49:37,376 INFO L140 encePairwiseOnDemand]: 599/608 looper letters, 32 selfloop transitions, 4 changer transitions 41/78 dead transitions. [2023-11-19 07:49:37,376 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 78 transitions, 585 flow [2023-11-19 07:49:37,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-19 07:49:37,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-11-19 07:49:37,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1519 transitions. [2023-11-19 07:49:37,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41639254385964913 [2023-11-19 07:49:37,383 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1519 transitions. [2023-11-19 07:49:37,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1519 transitions. [2023-11-19 07:49:37,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-11-19 07:49:37,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1519 transitions. [2023-11-19 07:49:37,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 253.16666666666666) internal successors, (1519), 6 states have internal predecessors, (1519), 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) [2023-11-19 07:49:37,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 608.0) internal successors, (4256), 7 states have internal predecessors, (4256), 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) [2023-11-19 07:49:37,398 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 608.0) internal successors, (4256), 7 states have internal predecessors, (4256), 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) [2023-11-19 07:49:37,398 INFO L175 Difference]: Start difference. First operand has 54 places, 39 transitions, 213 flow. Second operand 6 states and 1519 transitions. [2023-11-19 07:49:37,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 78 transitions, 585 flow [2023-11-19 07:49:37,438 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 78 transitions, 548 flow, removed 10 selfloop flow, removed 6 redundant places. [2023-11-19 07:49:37,439 INFO L231 Difference]: Finished difference. Result has 55 places, 37 transitions, 203 flow [2023-11-19 07:49:37,439 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=608, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=203, PETRI_PLACES=55, PETRI_TRANSITIONS=37} [2023-11-19 07:49:37,440 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 27 predicate places. [2023-11-19 07:49:37,440 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 37 transitions, 203 flow [2023-11-19 07:49:37,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 248.0) internal successors, (1240), 5 states have internal predecessors, (1240), 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) [2023-11-19 07:49:37,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-11-19 07:49:37,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 07:49:37,464 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-19 07:49:37,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-11-19 07:49:37,642 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-11-19 07:49:37,642 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 07:49:37,642 INFO L85 PathProgramCache]: Analyzing trace with hash 437043231, now seen corresponding path program 1 times [2023-11-19 07:49:37,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-19 07:49:37,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752081763] [2023-11-19 07:49:37,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:37,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 07:49:37,666 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-19 07:49:37,666 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [34703538] [2023-11-19 07:49:37,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 07:49:37,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-19 07:49:37,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/z3 [2023-11-19 07:49:37,668 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-19 07:49:37,684 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_980688ab-479a-4741-9bf2-d625630dba56/bin/uautomizer-verify-uCwYo4JHxu/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-19 07:49:37,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 07:49:37,890 INFO L262 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 72 conjunts are in the unsatisfiable core [2023-11-19 07:49:37,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-19 07:49:37,941 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-11-19 07:49:37,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 11 [2023-11-19 07:49:37,972 INFO L349 Elim1Store]: treesize reduction 29, result has 23.7 percent of original size [2023-11-19 07:49:37,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 15 [2023-11-19 07:49:38,064 INFO L349 Elim1Store]: treesize reduction 40, result has 40.3 percent of original size [2023-11-19 07:49:38,065 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 28 treesize of output 40 [2023-11-19 07:49:38,195 INFO L349 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2023-11-19 07:49:38,195 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 31 treesize of output 42 [2023-11-19 07:49:38,357 INFO L349 Elim1Store]: treesize reduction 8, result has 75.8 percent of original size [2023-11-19 07:49:38,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 46 [2023-11-19 07:49:38,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-19 07:49:38,742 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 33 [2023-11-19 07:49:38,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-19 07:49:38,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18 [2023-11-19 07:49:39,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2023-11-19 07:49:39,148 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 18 [2023-11-19 07:49:39,705 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-19 07:49:39,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 76 treesize of output 67 [2023-11-19 07:49:39,728 INFO L349 Elim1Store]: treesize reduction 41, result has 14.6 percent of original size [2023-11-19 07:49:39,728 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 33 [2023-11-19 07:49:39,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 36 treesize of output 23 [2023-11-19 07:49:40,016 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 07:49:40,016 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-19 07:49:42,552 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-19 07:49:42,553 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 322 treesize of output 290 [2023-11-19 07:49:42,571 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 137 [2023-11-19 07:49:54,483 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse4 (select (select |c_#memory_$Pointer$.base| c_~B~0.base) c_~B~0.offset))) (let ((.cse9 (= c_~B~0.base .cse4))) (let ((.cse10 (not .cse9)) (.cse5 (select |c_#memory_int| .cse4)) (.cse6 (select (select |c_#memory_int| c_~F~0.base) c_~F~0.offset))) (and (forall ((v_~a~0_53 Int)) (or (< v_~a~0_53 0) (< c_~N~0 (+ v_~a~0_53 1)) (forall ((v_~b~0_55 Int)) (or (forall ((v_ArrVal_548 (Array Int Int)) (v_arrayElimCell_20 Int)) (let ((.cse1 (* v_~b~0_55 4)) (.cse3 (store |c_#memory_int| .cse4 (store .cse5 v_arrayElimCell_20 .cse6)))) (let ((.cse0 (select .cse3 (select (select (store |c_#memory_$Pointer$.base| .cse4 v_ArrVal_548) c_~B~0.base) (+ (* v_~a~0_53 4) c_~B~0.offset)))) (.cse2 (select (select .cse3 c_~A~0.base) (+ c_~A~0.offset .cse1 (* (* v_~a~0_53 c_~M~0) 4))))) (or (forall ((v_arrayElimCell_21 Int)) (= (select .cse0 (+ .cse1 v_arrayElimCell_21)) .cse2)) (= (select .cse0 (+ .cse1 v_arrayElimCell_20)) .cse2))))) (< v_~b~0_55 0) (< c_~M~0 (+ v_~b~0_55 1)))))) (or (forall ((v_ArrVal_548 (Array Int Int)) (v_~b~0_55 Int) (v_~a~0_53 Int) (v_arrayElimCell_20 Int)) (or (< v_~a~0_53 0) (let ((.cse7 (store |c_#memory_int| .cse4 (store .cse5 v_arrayElimCell_20 .cse6))) (.cse8 (* v_~b~0_55 4))) (= (select (select .cse7 (select (select (store |c_#memory_$Pointer$.base| .cse4 v_ArrVal_548) c_~B~0.base) (+ (* v_~a~0_53 4) c_~B~0.offset))) (+ .cse8 v_arrayElimCell_20)) (select (select .cse7 c_~A~0.base) (+ c_~A~0.offset .cse8 (* (* v_~a~0_53 c_~M~0) 4))))) (< v_~b~0_55 0) (< c_~M~0 (+ v_~b~0_55 1)) (< c_~N~0 (+ v_~a~0_53 1)))) .cse9) (or .cse10 (forall ((v_ArrVal_548 (Array Int Int)) (v_~b~0_55 Int) (v_arrayElimCell_19 Int) (v_~a~0_53 Int) (v_arrayElimCell_21 Int)) (or (let ((.cse11 (store |c_#memory_int| .cse4 (store .cse5 v_arrayElimCell_19 .cse6))) (.cse12 (* v_~b~0_55 4))) (= (select (select .cse11 (select (select (store |c_#memory_$Pointer$.base| .cse4 v_ArrVal_548) c_~B~0.base) (+ (* v_~a~0_53 4) c_~B~0.offset))) (+ .cse12 v_arrayElimCell_21)) (select (select .cse11 c_~A~0.base) (+ c_~A~0.offset .cse12 (* (* v_~a~0_53 c_~M~0) 4))))) (< v_~a~0_53 0) (= v_~a~0_53 0) (< v_~b~0_55 0) (< c_~M~0 (+ v_~b~0_55 1)) (< c_~N~0 (+ v_~a~0_53 1))))) (or .cse10 (forall ((v_ArrVal_548 (Array Int Int)) (v_~b~0_55 Int) (v_~a~0_53 Int) (v_arrayElimCell_21 Int) (v_arrayElimCell_20 Int)) (or (< v_~a~0_53 0) (< v_~b~0_55 0) (let ((.cse13 (store |c_#memory_int| .cse4 (store .cse5 v_arrayElimCell_20 .cse6))) (.cse14 (* v_~b~0_55 4))) (= (select (select .cse13 (select (select (store |c_#memory_$Pointer$.base| .cse4 v_ArrVal_548) c_~B~0.base) (+ (* v_~a~0_53 4) c_~B~0.offset))) (+ .cse14 v_arrayElimCell_21)) (select (select .cse13 c_~A~0.base) (+ c_~A~0.offset .cse14 (* (* v_~a~0_53 c_~M~0) 4))))) (< c_~M~0 (+ v_~b~0_55 1)) (< c_~N~0 (+ v_~a~0_53 1))))) (forall ((v_~a~0_53 Int)) (or (< v_~a~0_53 0) (= v_~a~0_53 0) (forall ((v_~b~0_55 Int)) (or (forall ((v_ArrVal_548 (Array Int Int)) (v_arrayElimCell_19 Int) (v_arrayElimCell_20 Int)) (let ((.cse16 (* v_~b~0_55 4)) (.cse18 (store |c_#memory_int| .cse4 (store .cse5 v_arrayElimCell_19 .cse6)))) (let ((.cse15 (select .cse18 (select (select (store |c_#memory_$Pointer$.base| .cse4 v_ArrVal_548) c_~B~0.base) (+ (* v_~a~0_53 4) c_~B~0.offset)))) (.cse17 (select (select .cse18 c_~A~0.base) (+ c_~A~0.offset .cse16 (* (* v_~a~0_53 c_~M~0) 4))))) (or (= (select .cse15 (+ .cse16 v_arrayElimCell_20)) .cse17) (forall ((v_arrayElimCell_21 Int)) (= (select .cse15 (+ .cse16 v_arrayElimCell_21)) .cse17)))))) (< v_~b~0_55 0) (< c_~M~0 (+ v_~b~0_55 1)))) (< c_~N~0 (+ v_~a~0_53 1)))) (or (forall ((v_ArrVal_548 (Array Int Int)) (v_~b~0_55 Int) (v_arrayElimCell_19 Int) (v_~a~0_53 Int) (v_arrayElimCell_20 Int)) (or (< v_~a~0_53 0) (= v_~a~0_53 0) (< v_~b~0_55 0) (let ((.cse19 (store |c_#memory_int| .cse4 (store .cse5 v_arrayElimCell_19 .cse6))) (.cse20 (* v_~b~0_55 4))) (= (select (select .cse19 (select (select (store |c_#memory_$Pointer$.base| .cse4 v_ArrVal_548) c_~B~0.base) (+ (* v_~a~0_53 4) c_~B~0.offset))) (+ .cse20 v_arrayElimCell_20)) (select (select .cse19 c_~A~0.base) (+ c_~A~0.offset .cse20 (* (* v_~a~0_53 c_~M~0) 4))))) (< c_~M~0 (+ v_~b~0_55 1)) (< c_~N~0 (+ v_~a~0_53 1)))) .cse9))))) is different from false [2023-11-19 07:50:05,760 INFO L349 Elim1Store]: treesize reduction 4, result has 97.6 percent of original size [2023-11-19 07:50:05,761 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 1327 treesize of output 1125