./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test4-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test4-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ee90c95792b81649f087e170ece38fbab8d5281ca8435570782565b7b775a87f --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-29 01:30:53,510 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-29 01:30:53,576 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-29 01:30:53,581 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-29 01:30:53,582 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-29 01:30:53,608 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-29 01:30:53,609 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-29 01:30:53,609 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-29 01:30:53,610 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-29 01:30:53,611 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-29 01:30:53,611 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-29 01:30:53,612 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-29 01:30:53,612 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-29 01:30:53,613 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-29 01:30:53,613 INFO L153 SettingsManager]: * Use SBE=true [2023-11-29 01:30:53,614 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-29 01:30:53,614 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-29 01:30:53,615 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-29 01:30:53,615 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-29 01:30:53,616 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-29 01:30:53,616 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-29 01:30:53,617 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-29 01:30:53,618 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-29 01:30:53,618 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-29 01:30:53,618 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-29 01:30:53,619 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-29 01:30:53,619 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-29 01:30:53,620 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-29 01:30:53,620 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-29 01:30:53,620 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-29 01:30:53,621 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-29 01:30:53,621 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:30:53,622 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-29 01:30:53,622 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-29 01:30:53,622 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-29 01:30:53,622 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-29 01:30:53,623 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-29 01:30:53,623 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-29 01:30:53,623 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-29 01:30:53,623 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-29 01:30:53,623 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-29 01:30:53,624 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-29 01:30:53,624 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_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ee90c95792b81649f087e170ece38fbab8d5281ca8435570782565b7b775a87f [2023-11-29 01:30:53,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-29 01:30:53,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-29 01:30:53,872 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-29 01:30:53,873 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-29 01:30:53,874 INFO L274 PluginConnector]: CDTParser initialized [2023-11-29 01:30:53,875 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/../../sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test4-1.i [2023-11-29 01:30:56,656 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-29 01:30:56,924 INFO L384 CDTParser]: Found 1 translation units. [2023-11-29 01:30:56,924 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test4-1.i [2023-11-29 01:30:56,942 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/data/da00fe756/1cc06eba758f468bace12c99a99f93ed/FLAGfbd6c7a9b [2023-11-29 01:30:56,954 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/data/da00fe756/1cc06eba758f468bace12c99a99f93ed [2023-11-29 01:30:56,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-29 01:30:56,958 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-29 01:30:56,959 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-29 01:30:56,959 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-29 01:30:56,963 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-29 01:30:56,964 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:30:56" (1/1) ... [2023-11-29 01:30:56,965 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b052063 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:30:56, skipping insertion in model container [2023-11-29 01:30:56,965 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 01:30:56" (1/1) ... [2023-11-29 01:30:57,025 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-29 01:30:57,344 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_82016fd1-b393-4f46-9bd3-658e244a86d3/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test4-1.i[33519,33532] [2023-11-29 01:30:57,461 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:30:57,472 INFO L202 MainTranslator]: Completed pre-run [2023-11-29 01:30:57,534 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_82016fd1-b393-4f46-9bd3-658e244a86d3/sv-benchmarks/c/uthash-2.0.2/uthash_BER_nondet_test4-1.i[33519,33532] [2023-11-29 01:30:57,604 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-29 01:30:57,638 INFO L206 MainTranslator]: Completed translation [2023-11-29 01:30:57,639 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:30:57 WrapperNode [2023-11-29 01:30:57,639 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-29 01:30:57,640 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-29 01:30:57,640 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-29 01:30:57,640 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-29 01:30:57,646 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:30:57" (1/1) ... [2023-11-29 01:30:57,679 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:30:57" (1/1) ... [2023-11-29 01:30:57,758 INFO L138 Inliner]: procedures = 177, calls = 339, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1457 [2023-11-29 01:30:57,759 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-29 01:30:57,759 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-29 01:30:57,760 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-29 01:30:57,760 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-29 01:30:57,770 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:30:57" (1/1) ... [2023-11-29 01:30:57,770 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:30:57" (1/1) ... [2023-11-29 01:30:57,783 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:30:57" (1/1) ... [2023-11-29 01:30:57,861 INFO L175 MemorySlicer]: Split 319 memory accesses to 4 slices as follows [2, 5, 5, 307]. 96 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 84 writes are split as follows [0, 1, 1, 82]. [2023-11-29 01:30:57,861 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:30:57" (1/1) ... [2023-11-29 01:30:57,862 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:30:57" (1/1) ... [2023-11-29 01:30:57,902 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:30:57" (1/1) ... [2023-11-29 01:30:57,914 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:30:57" (1/1) ... [2023-11-29 01:30:57,921 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:30:57" (1/1) ... [2023-11-29 01:30:57,929 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:30:57" (1/1) ... [2023-11-29 01:30:57,940 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-29 01:30:57,940 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-29 01:30:57,941 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-29 01:30:57,941 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-29 01:30:57,941 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:30:57" (1/1) ... [2023-11-29 01:30:57,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-29 01:30:57,955 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:30:57,969 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-29 01:30:57,977 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-29 01:30:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-29 01:30:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-29 01:30:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-29 01:30:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-29 01:30:58,007 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-29 01:30:58,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-29 01:30:58,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-29 01:30:58,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-29 01:30:58,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2023-11-29 01:30:58,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2023-11-29 01:30:58,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2023-11-29 01:30:58,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#3 [2023-11-29 01:30:58,009 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2023-11-29 01:30:58,009 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2023-11-29 01:30:58,009 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2023-11-29 01:30:58,009 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#3 [2023-11-29 01:30:58,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-29 01:30:58,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-29 01:30:58,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-29 01:30:58,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-29 01:30:58,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-29 01:30:58,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-29 01:30:58,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-29 01:30:58,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-29 01:30:58,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-29 01:30:58,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-29 01:30:58,011 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-29 01:30:58,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-29 01:30:58,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-29 01:30:58,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-29 01:30:58,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-29 01:30:58,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-29 01:30:58,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-29 01:30:58,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-29 01:30:58,225 INFO L241 CfgBuilder]: Building ICFG [2023-11-29 01:30:58,227 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-29 01:30:59,700 INFO L282 CfgBuilder]: Performing block encoding [2023-11-29 01:30:59,746 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-29 01:30:59,746 INFO L309 CfgBuilder]: Removed 60 assume(true) statements. [2023-11-29 01:30:59,747 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:30:59 BoogieIcfgContainer [2023-11-29 01:30:59,747 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-29 01:30:59,750 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-29 01:30:59,750 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-29 01:30:59,754 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-29 01:30:59,754 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 01:30:56" (1/3) ... [2023-11-29 01:30:59,755 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65990afd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:30:59, skipping insertion in model container [2023-11-29 01:30:59,755 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 01:30:57" (2/3) ... [2023-11-29 01:30:59,755 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65990afd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 01:30:59, skipping insertion in model container [2023-11-29 01:30:59,755 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 01:30:59" (3/3) ... [2023-11-29 01:30:59,757 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_nondet_test4-1.i [2023-11-29 01:30:59,778 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-29 01:30:59,778 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-29 01:30:59,842 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-29 01:30:59,850 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;@64f9c081, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-29 01:30:59,850 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-29 01:30:59,856 INFO L276 IsEmpty]: Start isEmpty. Operand has 356 states, 347 states have (on average 1.697406340057637) internal successors, (589), 348 states have internal predecessors, (589), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 01:30:59,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-29 01:30:59,863 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:30:59,864 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:30:59,864 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:30:59,870 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:30:59,870 INFO L85 PathProgramCache]: Analyzing trace with hash -1453219301, now seen corresponding path program 1 times [2023-11-29 01:30:59,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:30:59,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784645585] [2023-11-29 01:30:59,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:30:59,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:30:59,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:00,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:31:00,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:00,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784645585] [2023-11-29 01:31:00,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784645585] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:00,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:31:00,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:31:00,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686107017] [2023-11-29 01:31:00,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:00,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-29 01:31:00,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:00,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-29 01:31:00,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:31:00,083 INFO L87 Difference]: Start difference. First operand has 356 states, 347 states have (on average 1.697406340057637) internal successors, (589), 348 states have internal predecessors, (589), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:00,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:31:00,170 INFO L93 Difference]: Finished difference Result 710 states and 1199 transitions. [2023-11-29 01:31:00,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-29 01:31:00,173 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 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) Word has length 9 [2023-11-29 01:31:00,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:31:00,185 INFO L225 Difference]: With dead ends: 710 [2023-11-29 01:31:00,186 INFO L226 Difference]: Without dead ends: 353 [2023-11-29 01:31:00,190 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-29 01:31:00,194 INFO L413 NwaCegarLoop]: 529 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 529 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-29 01:31:00,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 529 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-29 01:31:00,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2023-11-29 01:31:00,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 353. [2023-11-29 01:31:00,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 353 states, 345 states have (on average 1.4985507246376812) internal successors, (517), 345 states have internal predecessors, (517), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-29 01:31:00,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 353 states to 353 states and 529 transitions. [2023-11-29 01:31:00,259 INFO L78 Accepts]: Start accepts. Automaton has 353 states and 529 transitions. Word has length 9 [2023-11-29 01:31:00,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:31:00,260 INFO L495 AbstractCegarLoop]: Abstraction has 353 states and 529 transitions. [2023-11-29 01:31:00,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:00,260 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states and 529 transitions. [2023-11-29 01:31:00,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-29 01:31:00,261 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:31:00,261 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:00,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-29 01:31:00,261 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:31:00,262 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:00,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1365470122, now seen corresponding path program 1 times [2023-11-29 01:31:00,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:00,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291044067] [2023-11-29 01:31:00,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:00,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:00,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:00,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-29 01:31:00,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:00,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291044067] [2023-11-29 01:31:00,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291044067] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:00,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:31:00,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:31:00,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650483199] [2023-11-29 01:31:00,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:00,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:31:00,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:00,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:31:00,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:31:00,393 INFO L87 Difference]: Start difference. First operand 353 states and 529 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:00,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:31:00,900 INFO L93 Difference]: Finished difference Result 986 states and 1493 transitions. [2023-11-29 01:31:00,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:31:00,901 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 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) Word has length 9 [2023-11-29 01:31:00,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:31:00,905 INFO L225 Difference]: With dead ends: 986 [2023-11-29 01:31:00,905 INFO L226 Difference]: Without dead ends: 633 [2023-11-29 01:31:00,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:31:00,908 INFO L413 NwaCegarLoop]: 524 mSDtfsCounter, 434 mSDsluCounter, 973 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 439 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-29 01:31:00,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [439 Valid, 1497 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-29 01:31:00,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2023-11-29 01:31:00,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2023-11-29 01:31:00,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 622 states have (on average 1.517684887459807) internal successors, (944), 622 states have internal predecessors, (944), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 01:31:00,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 962 transitions. [2023-11-29 01:31:00,952 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 962 transitions. Word has length 9 [2023-11-29 01:31:00,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:31:00,952 INFO L495 AbstractCegarLoop]: Abstraction has 633 states and 962 transitions. [2023-11-29 01:31:00,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-29 01:31:00,953 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 962 transitions. [2023-11-29 01:31:00,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-29 01:31:00,961 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:31:00,962 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:00,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-29 01:31:00,962 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:31:00,963 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:00,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1506576437, now seen corresponding path program 1 times [2023-11-29 01:31:00,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:00,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848831109] [2023-11-29 01:31:00,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:00,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:01,059 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:31:01,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [616522024] [2023-11-29 01:31:01,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:01,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:01,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:01,067 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:31:01,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-29 01:31:01,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:01,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:31:01,555 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:31:01,597 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:31:01,597 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:31:01,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:01,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848831109] [2023-11-29 01:31:01,598 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:31:01,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [616522024] [2023-11-29 01:31:01,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [616522024] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:01,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:31:01,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:31:01,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250941426] [2023-11-29 01:31:01,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:01,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:31:01,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:01,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:31:01,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:31:01,602 INFO L87 Difference]: Start difference. First operand 633 states and 962 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 01:31:01,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:31:01,701 INFO L93 Difference]: Finished difference Result 1256 states and 1904 transitions. [2023-11-29 01:31:01,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:31:01,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 168 [2023-11-29 01:31:01,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:31:01,706 INFO L225 Difference]: With dead ends: 1256 [2023-11-29 01:31:01,706 INFO L226 Difference]: Without dead ends: 675 [2023-11-29 01:31:01,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:31:01,709 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 10 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:31:01,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 998 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:31:01,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2023-11-29 01:31:01,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 673. [2023-11-29 01:31:01,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 662 states have (on average 1.486404833836858) internal successors, (984), 662 states have internal predecessors, (984), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 01:31:01,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 1002 transitions. [2023-11-29 01:31:01,734 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 1002 transitions. Word has length 168 [2023-11-29 01:31:01,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:31:01,735 INFO L495 AbstractCegarLoop]: Abstraction has 673 states and 1002 transitions. [2023-11-29 01:31:01,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 01:31:01,735 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 1002 transitions. [2023-11-29 01:31:01,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-29 01:31:01,740 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:31:01,740 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:01,748 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-29 01:31:01,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:01,943 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:31:01,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:01,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1066051129, now seen corresponding path program 1 times [2023-11-29 01:31:01,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:01,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063735316] [2023-11-29 01:31:01,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:01,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:02,035 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:31:02,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [737505367] [2023-11-29 01:31:02,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:02,036 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:02,036 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:02,037 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:31:02,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-29 01:31:02,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:02,502 INFO L262 TraceCheckSpWp]: Trace formula consists of 894 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:31:02,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:31:02,531 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:31:02,531 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:31:02,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:02,531 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063735316] [2023-11-29 01:31:02,532 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:31:02,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [737505367] [2023-11-29 01:31:02,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [737505367] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:02,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:31:02,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-29 01:31:02,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123892361] [2023-11-29 01:31:02,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:02,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:31:02,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:02,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:31:02,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:31:02,534 INFO L87 Difference]: Start difference. First operand 673 states and 1002 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 01:31:02,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:31:02,628 INFO L93 Difference]: Finished difference Result 1148 states and 1709 transitions. [2023-11-29 01:31:02,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:31:02,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 168 [2023-11-29 01:31:02,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:31:02,633 INFO L225 Difference]: With dead ends: 1148 [2023-11-29 01:31:02,634 INFO L226 Difference]: Without dead ends: 715 [2023-11-29 01:31:02,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:31:02,636 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 9 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:31:02,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 998 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:31:02,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2023-11-29 01:31:02,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 713. [2023-11-29 01:31:02,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 702 states have (on average 1.4586894586894588) internal successors, (1024), 702 states have internal predecessors, (1024), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 01:31:02,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1042 transitions. [2023-11-29 01:31:02,664 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1042 transitions. Word has length 168 [2023-11-29 01:31:02,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:31:02,665 INFO L495 AbstractCegarLoop]: Abstraction has 713 states and 1042 transitions. [2023-11-29 01:31:02,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 01:31:02,665 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1042 transitions. [2023-11-29 01:31:02,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-29 01:31:02,668 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:31:02,668 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:02,676 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-11-29 01:31:02,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:02,875 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:31:02,876 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:02,876 INFO L85 PathProgramCache]: Analyzing trace with hash 825811383, now seen corresponding path program 1 times [2023-11-29 01:31:02,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:02,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459872184] [2023-11-29 01:31:02,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:02,877 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:02,963 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:31:02,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1000004910] [2023-11-29 01:31:02,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:02,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:02,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:02,965 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:31:02,972 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-29 01:31:03,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:03,481 INFO L262 TraceCheckSpWp]: Trace formula consists of 896 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:31:03,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:31:03,519 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:31:03,519 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:31:03,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:03,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459872184] [2023-11-29 01:31:03,520 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:31:03,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000004910] [2023-11-29 01:31:03,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000004910] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:03,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:31:03,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:31:03,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330437501] [2023-11-29 01:31:03,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:03,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:31:03,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:03,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:31:03,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:31:03,523 INFO L87 Difference]: Start difference. First operand 713 states and 1042 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 01:31:03,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:31:03,607 INFO L93 Difference]: Finished difference Result 1142 states and 1674 transitions. [2023-11-29 01:31:03,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:31:03,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 168 [2023-11-29 01:31:03,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:31:03,613 INFO L225 Difference]: With dead ends: 1142 [2023-11-29 01:31:03,613 INFO L226 Difference]: Without dead ends: 687 [2023-11-29 01:31:03,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:31:03,615 INFO L413 NwaCegarLoop]: 499 mSDtfsCounter, 165 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1345 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:31:03,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1345 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:31:03,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2023-11-29 01:31:03,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 685. [2023-11-29 01:31:03,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 674 states have (on average 1.456973293768546) internal successors, (982), 674 states have internal predecessors, (982), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 01:31:03,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 1000 transitions. [2023-11-29 01:31:03,646 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 1000 transitions. Word has length 168 [2023-11-29 01:31:03,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:31:03,646 INFO L495 AbstractCegarLoop]: Abstraction has 685 states and 1000 transitions. [2023-11-29 01:31:03,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 01:31:03,647 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 1000 transitions. [2023-11-29 01:31:03,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-29 01:31:03,649 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:31:03,649 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:03,658 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-29 01:31:03,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:03,852 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:31:03,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:03,853 INFO L85 PathProgramCache]: Analyzing trace with hash 89478597, now seen corresponding path program 1 times [2023-11-29 01:31:03,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:03,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094887646] [2023-11-29 01:31:03,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:03,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:03,928 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:31:03,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [40275319] [2023-11-29 01:31:03,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:03,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:03,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:03,930 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:31:03,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-29 01:31:04,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:04,378 INFO L262 TraceCheckSpWp]: Trace formula consists of 882 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-29 01:31:04,382 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:31:04,397 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:31:04,397 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:31:04,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:04,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094887646] [2023-11-29 01:31:04,398 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:31:04,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40275319] [2023-11-29 01:31:04,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40275319] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:04,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:31:04,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-29 01:31:04,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688337316] [2023-11-29 01:31:04,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:04,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-29 01:31:04,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:04,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-29 01:31:04,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-29 01:31:04,401 INFO L87 Difference]: Start difference. First operand 685 states and 1000 transitions. Second operand has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 01:31:04,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:31:04,487 INFO L93 Difference]: Finished difference Result 1274 states and 1865 transitions. [2023-11-29 01:31:04,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-29 01:31:04,488 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 168 [2023-11-29 01:31:04,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:31:04,492 INFO L225 Difference]: With dead ends: 1274 [2023-11-29 01:31:04,492 INFO L226 Difference]: Without dead ends: 659 [2023-11-29 01:31:04,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:31:04,494 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 165 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:31:04,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 1324 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:31:04,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2023-11-29 01:31:04,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 657. [2023-11-29 01:31:04,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 657 states, 646 states have (on average 1.4551083591331269) internal successors, (940), 646 states have internal predecessors, (940), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 01:31:04,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 657 states to 657 states and 958 transitions. [2023-11-29 01:31:04,522 INFO L78 Accepts]: Start accepts. Automaton has 657 states and 958 transitions. Word has length 168 [2023-11-29 01:31:04,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:31:04,522 INFO L495 AbstractCegarLoop]: Abstraction has 657 states and 958 transitions. [2023-11-29 01:31:04,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 40.5) internal successors, (162), 4 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 01:31:04,522 INFO L276 IsEmpty]: Start isEmpty. Operand 657 states and 958 transitions. [2023-11-29 01:31:04,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-29 01:31:04,525 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:31:04,525 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:04,533 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-29 01:31:04,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:04,726 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:31:04,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:04,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1942242807, now seen corresponding path program 1 times [2023-11-29 01:31:04,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:04,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591442857] [2023-11-29 01:31:04,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:04,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:04,789 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:31:04,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1803215266] [2023-11-29 01:31:04,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:04,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:04,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:04,791 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:31:04,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-29 01:31:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:05,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 868 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-29 01:31:05,192 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:31:05,438 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-29 01:31:05,438 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:31:05,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:05,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591442857] [2023-11-29 01:31:05,439 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:31:05,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803215266] [2023-11-29 01:31:05,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803215266] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:05,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:31:05,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-29 01:31:05,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54688894] [2023-11-29 01:31:05,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:05,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-29 01:31:05,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:05,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-29 01:31:05,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:31:05,441 INFO L87 Difference]: Start difference. First operand 657 states and 958 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 01:31:05,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:31:05,535 INFO L93 Difference]: Finished difference Result 1183 states and 1723 transitions. [2023-11-29 01:31:05,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-29 01:31:05,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 168 [2023-11-29 01:31:05,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:31:05,541 INFO L225 Difference]: With dead ends: 1183 [2023-11-29 01:31:05,541 INFO L226 Difference]: Without dead ends: 655 [2023-11-29 01:31:05,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-29 01:31:05,543 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 123 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:31:05,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 1007 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:31:05,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2023-11-29 01:31:05,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 655. [2023-11-29 01:31:05,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 644 states have (on average 1.454968944099379) internal successors, (937), 644 states have internal predecessors, (937), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 01:31:05,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 955 transitions. [2023-11-29 01:31:05,567 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 955 transitions. Word has length 168 [2023-11-29 01:31:05,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:31:05,568 INFO L495 AbstractCegarLoop]: Abstraction has 655 states and 955 transitions. [2023-11-29 01:31:05,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 2 states have internal predecessors, (162), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-29 01:31:05,568 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 955 transitions. [2023-11-29 01:31:05,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-11-29 01:31:05,571 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:31:05,571 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:05,579 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-29 01:31:05,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:05,779 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:31:05,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:05,780 INFO L85 PathProgramCache]: Analyzing trace with hash -79258915, now seen corresponding path program 1 times [2023-11-29 01:31:05,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:05,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [456612976] [2023-11-29 01:31:05,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:05,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:05,864 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:31:05,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [500885344] [2023-11-29 01:31:05,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:05,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:05,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:05,867 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:31:05,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-29 01:31:06,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:06,556 INFO L262 TraceCheckSpWp]: Trace formula consists of 1015 conjuncts, 27 conjunts are in the unsatisfiable core [2023-11-29 01:31:06,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:31:06,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-11-29 01:31:07,094 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:31:07,095 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 26 [2023-11-29 01:31:07,271 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 01:31:07,271 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:31:07,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:07,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [456612976] [2023-11-29 01:31:07,272 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:31:07,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500885344] [2023-11-29 01:31:07,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500885344] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:07,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:31:07,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-29 01:31:07,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034556380] [2023-11-29 01:31:07,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:07,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-11-29 01:31:07,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:07,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-11-29 01:31:07,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2023-11-29 01:31:07,274 INFO L87 Difference]: Start difference. First operand 655 states and 955 transitions. Second operand has 12 states, 12 states have (on average 13.916666666666666) internal successors, (167), 12 states have internal predecessors, (167), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 01:31:10,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-29 01:31:12,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:31:12,117 INFO L93 Difference]: Finished difference Result 1328 states and 1921 transitions. [2023-11-29 01:31:12,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-29 01:31:12,117 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 13.916666666666666) internal successors, (167), 12 states have internal predecessors, (167), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 181 [2023-11-29 01:31:12,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:31:12,122 INFO L225 Difference]: With dead ends: 1328 [2023-11-29 01:31:12,122 INFO L226 Difference]: Without dead ends: 754 [2023-11-29 01:31:12,123 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2023-11-29 01:31:12,123 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 746 mSDsluCounter, 3751 mSDsCounter, 0 mSdLazyCounter, 1838 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 4241 SdHoareTripleChecker+Invalid, 1846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 1838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-11-29 01:31:12,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [751 Valid, 4241 Invalid, 1846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 1838 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-11-29 01:31:12,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2023-11-29 01:31:12,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 687. [2023-11-29 01:31:12,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 676 states have (on average 1.4408284023668638) internal successors, (974), 676 states have internal predecessors, (974), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 01:31:12,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 992 transitions. [2023-11-29 01:31:12,153 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 992 transitions. Word has length 181 [2023-11-29 01:31:12,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:31:12,154 INFO L495 AbstractCegarLoop]: Abstraction has 687 states and 992 transitions. [2023-11-29 01:31:12,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 13.916666666666666) internal successors, (167), 12 states have internal predecessors, (167), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 01:31:12,154 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 992 transitions. [2023-11-29 01:31:12,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2023-11-29 01:31:12,157 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:31:12,157 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:12,167 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-29 01:31:12,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:12,358 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:31:12,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:12,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1503902367, now seen corresponding path program 1 times [2023-11-29 01:31:12,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:12,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14707725] [2023-11-29 01:31:12,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:12,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:12,447 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:31:12,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [352216230] [2023-11-29 01:31:12,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:12,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:12,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:12,448 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:31:12,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-29 01:31:12,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:12,929 INFO L262 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-29 01:31:12,933 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:31:12,977 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 01:31:12,977 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:31:12,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:31:12,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14707725] [2023-11-29 01:31:12,977 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:31:12,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [352216230] [2023-11-29 01:31:12,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [352216230] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:31:12,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:31:12,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:31:12,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893274602] [2023-11-29 01:31:12,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:31:12,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:31:12,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:31:12,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:31:12,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:31:12,980 INFO L87 Difference]: Start difference. First operand 687 states and 992 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 01:31:13,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:31:13,109 INFO L93 Difference]: Finished difference Result 1461 states and 2146 transitions. [2023-11-29 01:31:13,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:31:13,110 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 181 [2023-11-29 01:31:13,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:31:13,116 INFO L225 Difference]: With dead ends: 1461 [2023-11-29 01:31:13,116 INFO L226 Difference]: Without dead ends: 875 [2023-11-29 01:31:13,117 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:31:13,118 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 140 mSDsluCounter, 1461 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 1958 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:31:13,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 1958 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:31:13,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2023-11-29 01:31:13,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 710. [2023-11-29 01:31:13,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 699 states have (on average 1.4248927038626609) internal successors, (996), 699 states have internal predecessors, (996), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 01:31:13,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 1014 transitions. [2023-11-29 01:31:13,162 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 1014 transitions. Word has length 181 [2023-11-29 01:31:13,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:31:13,162 INFO L495 AbstractCegarLoop]: Abstraction has 710 states and 1014 transitions. [2023-11-29 01:31:13,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 01:31:13,163 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 1014 transitions. [2023-11-29 01:31:13,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-11-29 01:31:13,165 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:31:13,165 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:31:13,174 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-11-29 01:31:13,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:13,366 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:31:13,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:31:13,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1432599816, now seen corresponding path program 1 times [2023-11-29 01:31:13,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:31:13,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476134057] [2023-11-29 01:31:13,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:13,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:31:13,451 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:31:13,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [897446416] [2023-11-29 01:31:13,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:31:13,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:31:13,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:31:13,453 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:31:13,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-29 01:31:14,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:31:14,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 32 conjunts are in the unsatisfiable core [2023-11-29 01:31:14,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:31:14,334 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-29 01:31:14,335 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 44 treesize of output 22 [2023-11-29 01:31:22,885 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 01:31:28,426 WARN L293 SmtUtils]: Spent 5.54s on a formula simplification that was a NOOP. DAG size: 19 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 01:31:36,450 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 01:31:44,482 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 01:31:52,526 WARN L293 SmtUtils]: Spent 8.04s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 01:32:04,629 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 01:32:20,712 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 01:32:28,760 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 01:32:36,807 WARN L293 SmtUtils]: Spent 8.05s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 01:32:45,398 WARN L293 SmtUtils]: Spent 8.07s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 01:32:57,346 WARN L293 SmtUtils]: Spent 7.35s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 01:33:02,860 WARN L293 SmtUtils]: Spent 5.51s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 01:33:14,924 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 01:33:22,953 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 01:33:29,904 WARN L293 SmtUtils]: Spent 6.95s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 01:33:37,925 WARN L293 SmtUtils]: Spent 8.02s on a formula simplification that was a NOOP. DAG size: 12 (called from [L 731] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2023-11-29 01:33:45,974 WARN L854 $PredicateComparison]: unable to prove that (let ((.cse6 (mod (+ (* 4294967295 |c_ULTIMATE.start_main_~_ha_hashv~0#1|) 4276993779) 4294967296))) (let ((.cse0 (mod (+ 2690382803 |c_ULTIMATE.start_main_~_ha_hashv~0#1|) 4294967296)) (.cse3 (* .cse6 256)) (.cse5 (* (- 1) |c_ULTIMATE.start_main_~_ha_hashv~0#1|))) (or (exists ((v_z_29 Int)) (and (exists ((v_y_26 Int) (v_y_29 Int)) (let ((.cse4 (* v_y_26 4294967296)) (.cse1 (* v_z_29 4294967295)) (.cse2 (* v_y_29 4294967296))) (and (= (+ .cse0 .cse1 .cse2) 4294967296) (= .cse3 (+ .cse4 (* v_z_29 4294967039) .cse2)) (<= (+ .cse4 |c_ULTIMATE.start_main_~_ha_hashv~0#1| .cse1 .cse2) 8553987558) (<= (div (+ (div (+ (- 255) (div (+ 8553987302 (* v_z_29 (- 4294967295)) .cse5) 256)) 256) (- 255)) 256) (+ 254 (* v_y_26 256) (* v_y_29 256)))))) (<= 0 v_z_29) (<= (+ .cse6 v_z_29) 4294967295))) (exists ((v_z_29 Int)) (and (exists ((v_y_26 Int) (v_y_29 Int)) (let ((.cse7 (* v_z_29 4294967295)) (.cse9 (* v_y_26 4294967296)) (.cse8 (* v_y_29 4294967296))) (and (= (+ .cse0 .cse7 .cse8) 4294967296) (<= (+ .cse9 |c_ULTIMATE.start_main_~_ha_hashv~0#1| .cse7 .cse8) 8553987558) (= .cse3 (+ 1099511627776 .cse9 (* v_z_29 4294967039) .cse8)) (<= (div (+ (div (+ (- 255) (div (+ 8553987302 (* v_z_29 (- 4294967295)) .cse5) 256)) 256) (- 255)) 256) (+ 254 (* v_y_26 256) (* v_y_29 256)))))) (<= 4294967296 (+ .cse6 v_z_29)) (<= v_z_29 4294967295)))))) is different from false [2023-11-29 01:33:53,847 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-11-29 01:33:53,847 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:33:53,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:33:53,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476134057] [2023-11-29 01:33:53,847 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:33:53,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897446416] [2023-11-29 01:33:53,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [897446416] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:33:53,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:33:53,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-29 01:33:53,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867435353] [2023-11-29 01:33:53,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:33:53,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-29 01:33:53,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:33:53,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-29 01:33:53,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=108, Unknown=1, NotChecked=20, Total=156 [2023-11-29 01:33:53,849 INFO L87 Difference]: Start difference. First operand 710 states and 1014 transitions. Second operand has 13 states, 13 states have (on average 12.923076923076923) internal successors, (168), 13 states have internal predecessors, (168), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 01:33:56,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:33:56,182 INFO L93 Difference]: Finished difference Result 1348 states and 1937 transitions. [2023-11-29 01:33:56,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-29 01:33:56,182 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 12.923076923076923) internal successors, (168), 13 states have internal predecessors, (168), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 182 [2023-11-29 01:33:56,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:33:56,186 INFO L225 Difference]: With dead ends: 1348 [2023-11-29 01:33:56,186 INFO L226 Difference]: Without dead ends: 751 [2023-11-29 01:33:56,187 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=39, Invalid=174, Unknown=1, NotChecked=26, Total=240 [2023-11-29 01:33:56,187 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 21 mSDsluCounter, 3121 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 3618 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 158 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:33:56,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 3618 Invalid, 1236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 1072 Invalid, 0 Unknown, 158 Unchecked, 2.1s Time] [2023-11-29 01:33:56,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2023-11-29 01:33:56,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 741. [2023-11-29 01:33:56,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 730 states have (on average 1.4136986301369863) internal successors, (1032), 730 states have internal predecessors, (1032), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-29 01:33:56,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1050 transitions. [2023-11-29 01:33:56,208 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1050 transitions. Word has length 182 [2023-11-29 01:33:56,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:33:56,208 INFO L495 AbstractCegarLoop]: Abstraction has 741 states and 1050 transitions. [2023-11-29 01:33:56,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.923076923076923) internal successors, (168), 13 states have internal predecessors, (168), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-29 01:33:56,208 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1050 transitions. [2023-11-29 01:33:56,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2023-11-29 01:33:56,209 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:33:56,210 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:33:56,218 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-11-29 01:33:56,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-29 01:33:56,410 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:33:56,411 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:33:56,411 INFO L85 PathProgramCache]: Analyzing trace with hash 129314006, now seen corresponding path program 1 times [2023-11-29 01:33:56,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:33:56,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313906266] [2023-11-29 01:33:56,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:33:56,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:33:56,486 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:33:56,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [883316128] [2023-11-29 01:33:56,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:33:56,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:33:56,486 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:33:56,487 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:33:56,488 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-29 01:33:57,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:57,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 1015 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-29 01:33:57,066 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:33:57,095 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-29 01:33:57,095 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-29 01:33:57,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-29 01:33:57,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313906266] [2023-11-29 01:33:57,095 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-29 01:33:57,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883316128] [2023-11-29 01:33:57,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883316128] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-29 01:33:57,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-29 01:33:57,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-29 01:33:57,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672801430] [2023-11-29 01:33:57,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-29 01:33:57,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-29 01:33:57,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-29 01:33:57,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-29 01:33:57,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-29 01:33:57,098 INFO L87 Difference]: Start difference. First operand 741 states and 1050 transitions. Second operand has 5 states, 4 states have (on average 42.75) internal successors, (171), 5 states have internal predecessors, (171), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 01:33:57,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-29 01:33:57,223 INFO L93 Difference]: Finished difference Result 1376 states and 1962 transitions. [2023-11-29 01:33:57,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-29 01:33:57,224 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 42.75) internal successors, (171), 5 states have internal predecessors, (171), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 183 [2023-11-29 01:33:57,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-29 01:33:57,231 INFO L225 Difference]: With dead ends: 1376 [2023-11-29 01:33:57,231 INFO L226 Difference]: Without dead ends: 801 [2023-11-29 01:33:57,232 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-29 01:33:57,233 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 482 mSDsluCounter, 1509 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 2015 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-29 01:33:57,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 2015 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-29 01:33:57,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2023-11-29 01:33:57,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 743. [2023-11-29 01:33:57,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 731 states have (on average 1.414500683994528) internal successors, (1034), 732 states have internal predecessors, (1034), 9 states have call successors, (9), 1 states have call predecessors, (9), 2 states have return successors, (12), 9 states have call predecessors, (12), 9 states have call successors, (12) [2023-11-29 01:33:57,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1055 transitions. [2023-11-29 01:33:57,261 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1055 transitions. Word has length 183 [2023-11-29 01:33:57,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-29 01:33:57,261 INFO L495 AbstractCegarLoop]: Abstraction has 743 states and 1055 transitions. [2023-11-29 01:33:57,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 42.75) internal successors, (171), 5 states have internal predecessors, (171), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-29 01:33:57,262 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1055 transitions. [2023-11-29 01:33:57,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-11-29 01:33:57,263 INFO L187 NwaCegarLoop]: Found error trace [2023-11-29 01:33:57,263 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-29 01:33:57,272 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-11-29 01:33:57,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:33:57,464 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-29 01:33:57,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-29 01:33:57,464 INFO L85 PathProgramCache]: Analyzing trace with hash 1531878870, now seen corresponding path program 1 times [2023-11-29 01:33:57,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-29 01:33:57,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148784973] [2023-11-29 01:33:57,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:33:57,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-29 01:33:57,547 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-29 01:33:57,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [356528944] [2023-11-29 01:33:57,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-29 01:33:57,548 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-29 01:33:57,548 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 [2023-11-29 01:33:57,549 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-29 01:33:57,553 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_82016fd1-b393-4f46-9bd3-658e244a86d3/bin/uautomizer-verify-BQ2R08f2Ya/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-29 01:33:58,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-29 01:33:58,241 INFO L262 TraceCheckSpWp]: Trace formula consists of 1075 conjuncts, 241 conjunts are in the unsatisfiable core [2023-11-29 01:33:58,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-29 01:33:58,277 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-11-29 01:33:58,306 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 15 [2023-11-29 01:33:58,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 11 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 21 [2023-11-29 01:33:58,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 21 [2023-11-29 01:33:58,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:33:58,995 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 0 case distinctions, treesize of input 30 treesize of output 21 [2023-11-29 01:33:59,017 INFO L349 Elim1Store]: treesize reduction 26, result has 35.0 percent of original size [2023-11-29 01:33:59,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 29 [2023-11-29 01:33:59,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-29 01:33:59,112 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2023-11-29 01:33:59,117 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-11-29 01:33:59,277 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-29 01:33:59,277 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 66 treesize of output 57 [2023-11-29 01:33:59,282 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 31 treesize of output 16 [2023-11-29 01:33:59,289 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 1 [2023-11-29 01:34:18,063 INFO L224 Elim1Store]: Index analysis took 448 ms