./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursified_nla-digbench/recursified_cohencu-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursified_nla-digbench/recursified_cohencu-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme --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 260777f6a7be1f16cc330a008300c11ebdea8f1cf9d8e96a0325274fd8fd5b2a --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:45:25,344 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:45:25,435 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:45:25,440 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:45:25,441 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:45:25,471 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:45:25,472 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:45:25,473 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:45:25,474 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:45:25,475 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:45:25,475 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:45:25,476 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:45:25,477 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:45:25,478 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:45:25,478 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:45:25,479 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:45:25,480 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:45:25,481 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:45:25,481 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:45:25,482 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:45:25,483 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:45:25,484 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:45:25,485 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:45:25,485 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:45:25,486 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:45:25,487 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:45:25,487 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:45:25,488 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:45:25,489 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:45:25,489 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:45:25,490 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:45:25,490 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:45:25,491 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:45:25,492 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:45:25,492 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:45:25,493 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:45:25,493 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:45:25,493 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:45:25,494 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:45:25,494 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:45:25,494 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:45:25,495 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:45:25,495 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_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 260777f6a7be1f16cc330a008300c11ebdea8f1cf9d8e96a0325274fd8fd5b2a [2023-11-26 11:45:25,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:45:25,866 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:45:25,869 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:45:25,871 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:45:25,871 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:45:25,873 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/recursified_nla-digbench/recursified_cohencu-ll.c [2023-11-26 11:45:29,138 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:45:29,374 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:45:29,374 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/sv-benchmarks/c/recursified_nla-digbench/recursified_cohencu-ll.c [2023-11-26 11:45:29,384 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/data/885125de1/d57dcc9881354bea9dc33203dea47b3a/FLAG806277c7e [2023-11-26 11:45:29,401 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/data/885125de1/d57dcc9881354bea9dc33203dea47b3a [2023-11-26 11:45:29,404 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:45:29,406 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:45:29,408 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:45:29,408 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:45:29,415 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:45:29,416 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:45:29" (1/1) ... [2023-11-26 11:45:29,417 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5051bbba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:29, skipping insertion in model container [2023-11-26 11:45:29,418 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:45:29" (1/1) ... [2023-11-26 11:45:29,447 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:45:29,630 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_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/sv-benchmarks/c/recursified_nla-digbench/recursified_cohencu-ll.c[1124,1137] [2023-11-26 11:45:29,663 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:45:29,676 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:45:29,691 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_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/sv-benchmarks/c/recursified_nla-digbench/recursified_cohencu-ll.c[1124,1137] [2023-11-26 11:45:29,715 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:45:29,739 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:45:29,739 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:29 WrapperNode [2023-11-26 11:45:29,740 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:45:29,741 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:45:29,742 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:45:29,742 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:45:29,751 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:29" (1/1) ... [2023-11-26 11:45:29,778 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:29" (1/1) ... [2023-11-26 11:45:29,804 INFO L138 Inliner]: procedures = 16, calls = 99, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 106 [2023-11-26 11:45:29,805 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:45:29,806 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:45:29,806 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:45:29,806 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:45:29,817 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:29" (1/1) ... [2023-11-26 11:45:29,817 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:29" (1/1) ... [2023-11-26 11:45:29,820 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:29" (1/1) ... [2023-11-26 11:45:29,840 INFO L175 MemorySlicer]: Split 66 memory accesses to 6 slices as follows [2, 5, 11, 15, 21, 12]. 32 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0]. The 9 writes are split as follows [0, 1, 2, 2, 2, 2]. [2023-11-26 11:45:29,840 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:29" (1/1) ... [2023-11-26 11:45:29,841 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:29" (1/1) ... [2023-11-26 11:45:29,851 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:29" (1/1) ... [2023-11-26 11:45:29,853 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:29" (1/1) ... [2023-11-26 11:45:29,855 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:29" (1/1) ... [2023-11-26 11:45:29,857 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:29" (1/1) ... [2023-11-26 11:45:29,861 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:45:29,863 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:45:29,863 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:45:29,863 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:45:29,864 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:29" (1/1) ... [2023-11-26 11:45:29,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:45:29,887 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:29,922 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:45:29,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:45:29,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:45:29,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:45:29,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:45:29,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:45:29,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:45:29,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 11:45:29,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-26 11:45:29,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 11:45:29,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 11:45:29,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 11:45:29,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 11:45:29,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-26 11:45:29,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-26 11:45:29,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-26 11:45:29,985 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_29_to_41_0 [2023-11-26 11:45:29,985 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_29_to_41_0 [2023-11-26 11:45:29,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:45:29,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:45:29,986 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 11:45:29,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 11:45:29,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 11:45:29,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-26 11:45:29,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-26 11:45:29,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-26 11:45:29,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-26 11:45:29,989 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-26 11:45:29,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 11:45:30,166 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:45:30,174 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:45:30,675 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:45:30,724 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:45:30,725 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:45:30,725 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:45:30 BoogieIcfgContainer [2023-11-26 11:45:30,726 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:45:30,728 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:45:30,729 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:45:30,732 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:45:30,733 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:45:29" (1/3) ... [2023-11-26 11:45:30,734 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75059788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:45:30, skipping insertion in model container [2023-11-26 11:45:30,734 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:45:29" (2/3) ... [2023-11-26 11:45:30,735 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75059788 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:45:30, skipping insertion in model container [2023-11-26 11:45:30,735 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:45:30" (3/3) ... [2023-11-26 11:45:30,736 INFO L112 eAbstractionObserver]: Analyzing ICFG recursified_cohencu-ll.c [2023-11-26 11:45:30,759 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:45:30,760 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:45:30,839 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:45:30,849 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;@d2d9930, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:45:30,850 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:45:30,855 INFO L276 IsEmpty]: Start isEmpty. Operand has 38 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 23 states have internal predecessors, (25), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2023-11-26 11:45:30,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-26 11:45:30,864 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:30,864 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:30,865 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:30,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:30,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1371458259, now seen corresponding path program 1 times [2023-11-26 11:45:30,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:30,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885214286] [2023-11-26 11:45:30,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:30,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:31,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:31,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:31,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:31,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885214286] [2023-11-26 11:45:31,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885214286] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:45:31,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:45:31,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 11:45:31,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400086788] [2023-11-26 11:45:31,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:31,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:45:31,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:32,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:45:32,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:45:32,017 INFO L87 Difference]: Start difference. First operand has 38 states, 21 states have (on average 1.1904761904761905) internal successors, (25), 23 states have internal predecessors, (25), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 8 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:32,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:32,622 INFO L93 Difference]: Finished difference Result 106 states and 168 transitions. [2023-11-26 11:45:32,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:45:32,625 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-11-26 11:45:32,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:32,640 INFO L225 Difference]: With dead ends: 106 [2023-11-26 11:45:32,640 INFO L226 Difference]: Without dead ends: 67 [2023-11-26 11:45:32,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:45:32,653 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 29 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:32,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 141 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:45:32,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2023-11-26 11:45:32,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 55. [2023-11-26 11:45:32,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 32 states have (on average 1.09375) internal successors, (35), 34 states have internal predecessors, (35), 18 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2023-11-26 11:45:32,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 71 transitions. [2023-11-26 11:45:32,725 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 71 transitions. Word has length 8 [2023-11-26 11:45:32,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:32,726 INFO L495 AbstractCegarLoop]: Abstraction has 55 states and 71 transitions. [2023-11-26 11:45:32,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.0) internal successors, (6), 5 states have internal predecessors, (6), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 11:45:32,727 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 71 transitions. [2023-11-26 11:45:32,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2023-11-26 11:45:32,729 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:32,729 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:32,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:45:32,730 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:32,730 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:32,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1638005840, now seen corresponding path program 1 times [2023-11-26 11:45:32,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:32,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649640983] [2023-11-26 11:45:32,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:32,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:32,764 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:32,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1662702374] [2023-11-26 11:45:32,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:32,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:32,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:32,770 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:32,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:45:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:32,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 67 conjunts are in the unsatisfiable core [2023-11-26 11:45:32,982 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:33,089 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-26 11:45:33,105 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-26 11:45:33,119 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-26 11:45:33,826 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:45:33,828 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:45:34,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:34,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649640983] [2023-11-26 11:45:34,178 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:34,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662702374] [2023-11-26 11:45:34,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662702374] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:45:34,179 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:45:34,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2023-11-26 11:45:34,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53365837] [2023-11-26 11:45:34,181 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:45:34,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-26 11:45:34,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:34,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-26 11:45:34,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2023-11-26 11:45:34,189 INFO L87 Difference]: Start difference. First operand 55 states and 71 transitions. Second operand has 13 states, 10 states have (on average 1.0) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:45:35,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:35,317 INFO L93 Difference]: Finished difference Result 79 states and 98 transitions. [2023-11-26 11:45:35,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 11:45:35,318 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 10 states have (on average 1.0) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2023-11-26 11:45:35,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:35,321 INFO L225 Difference]: With dead ends: 79 [2023-11-26 11:45:35,321 INFO L226 Difference]: Without dead ends: 77 [2023-11-26 11:45:35,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=106, Invalid=446, Unknown=0, NotChecked=0, Total=552 [2023-11-26 11:45:35,324 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 50 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:35,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 132 Invalid, 387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-26 11:45:35,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2023-11-26 11:45:35,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 75. [2023-11-26 11:45:35,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 44 states have (on average 1.0909090909090908) internal successors, (48), 46 states have internal predecessors, (48), 24 states have call successors, (24), 6 states have call predecessors, (24), 6 states have return successors, (23), 23 states have call predecessors, (23), 22 states have call successors, (23) [2023-11-26 11:45:35,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 95 transitions. [2023-11-26 11:45:35,350 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 95 transitions. Word has length 14 [2023-11-26 11:45:35,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:35,350 INFO L495 AbstractCegarLoop]: Abstraction has 75 states and 95 transitions. [2023-11-26 11:45:35,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 10 states have (on average 1.0) internal successors, (10), 8 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-26 11:45:35,351 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 95 transitions. [2023-11-26 11:45:35,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-26 11:45:35,352 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:35,352 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:35,365 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:35,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-26 11:45:35,560 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:35,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:35,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1652518129, now seen corresponding path program 1 times [2023-11-26 11:45:35,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:35,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071752481] [2023-11-26 11:45:35,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:35,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:35,587 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:35,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1177117707] [2023-11-26 11:45:35,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:35,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:35,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:35,589 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:35,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:45:35,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:35,729 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 47 conjunts are in the unsatisfiable core [2023-11-26 11:45:35,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:35,745 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-26 11:45:35,754 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-26 11:45:36,151 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-26 11:45:36,151 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:45:36,394 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-26 11:45:36,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:36,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071752481] [2023-11-26 11:45:36,396 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:36,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177117707] [2023-11-26 11:45:36,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177117707] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-26 11:45:36,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:45:36,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2023-11-26 11:45:36,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057104677] [2023-11-26 11:45:36,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:36,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:45:36,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:36,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:45:36,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-11-26 11:45:36,401 INFO L87 Difference]: Start difference. First operand 75 states and 95 transitions. Second operand has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:45:36,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:36,786 INFO L93 Difference]: Finished difference Result 81 states and 100 transitions. [2023-11-26 11:45:36,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:45:36,787 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2023-11-26 11:45:36,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:36,789 INFO L225 Difference]: With dead ends: 81 [2023-11-26 11:45:36,789 INFO L226 Difference]: Without dead ends: 79 [2023-11-26 11:45:36,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2023-11-26 11:45:36,792 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 25 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:36,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 172 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 11:45:36,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2023-11-26 11:45:36,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2023-11-26 11:45:36,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 47 states have (on average 1.0851063829787233) internal successors, (51), 49 states have internal predecessors, (51), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (23), 23 states have call predecessors, (23), 22 states have call successors, (23) [2023-11-26 11:45:36,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 98 transitions. [2023-11-26 11:45:36,817 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 98 transitions. Word has length 20 [2023-11-26 11:45:36,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:36,817 INFO L495 AbstractCegarLoop]: Abstraction has 79 states and 98 transitions. [2023-11-26 11:45:36,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 6 states have internal predecessors, (11), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 11:45:36,818 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 98 transitions. [2023-11-26 11:45:36,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-11-26 11:45:36,819 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:36,819 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:36,833 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:37,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:37,027 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:37,028 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:37,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1440093584, now seen corresponding path program 1 times [2023-11-26 11:45:37,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:37,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799101833] [2023-11-26 11:45:37,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:37,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:37,054 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:37,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2094499329] [2023-11-26 11:45:37,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:37,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:37,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:37,057 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:37,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:45:37,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:37,213 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 69 conjunts are in the unsatisfiable core [2023-11-26 11:45:37,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:37,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-26 11:45:37,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-26 11:45:37,276 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-26 11:45:38,002 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-26 11:45:38,003 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:45:38,438 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:45:38,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:38,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799101833] [2023-11-26 11:45:38,439 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:38,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094499329] [2023-11-26 11:45:38,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094499329] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-26 11:45:38,439 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:45:38,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 17 [2023-11-26 11:45:38,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172790458] [2023-11-26 11:45:38,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:45:38,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-26 11:45:38,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:38,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-26 11:45:38,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2023-11-26 11:45:38,442 INFO L87 Difference]: Start difference. First operand 79 states and 98 transitions. Second operand has 8 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-26 11:45:41,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:45:41,105 INFO L93 Difference]: Finished difference Result 85 states and 103 transitions. [2023-11-26 11:45:41,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:45:41,107 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2023-11-26 11:45:41,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:45:41,109 INFO L225 Difference]: With dead ends: 85 [2023-11-26 11:45:41,109 INFO L226 Difference]: Without dead ends: 83 [2023-11-26 11:45:41,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 30 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2023-11-26 11:45:41,111 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 24 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:45:41,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 158 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2023-11-26 11:45:41,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-11-26 11:45:41,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2023-11-26 11:45:41,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 50 states have (on average 1.08) internal successors, (54), 52 states have internal predecessors, (54), 24 states have call successors, (24), 8 states have call predecessors, (24), 8 states have return successors, (23), 23 states have call predecessors, (23), 22 states have call successors, (23) [2023-11-26 11:45:41,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 101 transitions. [2023-11-26 11:45:41,142 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 101 transitions. Word has length 26 [2023-11-26 11:45:41,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:45:41,142 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 101 transitions. [2023-11-26 11:45:41,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2023-11-26 11:45:41,143 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 101 transitions. [2023-11-26 11:45:41,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-26 11:45:41,144 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:45:41,144 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:45:41,158 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:45:41,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:41,354 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:45:41,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:45:41,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1224682067, now seen corresponding path program 1 times [2023-11-26 11:45:41,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:45:41,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621066095] [2023-11-26 11:45:41,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:41,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:45:41,389 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:45:41,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [815609803] [2023-11-26 11:45:41,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:45:41,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:45:41,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:45:41,393 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:45:41,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:45:41,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:45:41,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 74 conjunts are in the unsatisfiable core [2023-11-26 11:45:41,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:45:41,584 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-26 11:45:41,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-26 11:45:41,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-26 11:45:42,284 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 6 proven. 14 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-26 11:45:42,284 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:45:47,228 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 11:45:47,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:45:47,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621066095] [2023-11-26 11:45:47,229 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:45:47,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [815609803] [2023-11-26 11:45:47,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [815609803] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:45:47,229 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:45:47,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2023-11-26 11:45:47,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188867788] [2023-11-26 11:45:47,230 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:45:47,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-11-26 11:45:47,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:45:47,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-11-26 11:45:47,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=428, Unknown=1, NotChecked=0, Total=506 [2023-11-26 11:45:47,233 INFO L87 Difference]: Start difference. First operand 83 states and 101 transitions. Second operand has 23 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 19 states have internal predecessors, (31), 8 states have call successors, (12), 6 states have call predecessors, (12), 4 states have return successors, (8), 2 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 11:45:52,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-11-26 11:46:00,999 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [1] [2023-11-26 11:46:04,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:04,761 INFO L93 Difference]: Finished difference Result 99 states and 116 transitions. [2023-11-26 11:46:04,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-11-26 11:46:04,762 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 19 states have internal predecessors, (31), 8 states have call successors, (12), 6 states have call predecessors, (12), 4 states have return successors, (8), 2 states have call predecessors, (8), 4 states have call successors, (8) Word has length 32 [2023-11-26 11:46:04,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:04,764 INFO L225 Difference]: With dead ends: 99 [2023-11-26 11:46:04,765 INFO L226 Difference]: Without dead ends: 97 [2023-11-26 11:46:04,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=197, Invalid=991, Unknown=2, NotChecked=0, Total=1190 [2023-11-26 11:46:04,766 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 80 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 47 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:04,767 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 122 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 544 Invalid, 2 Unknown, 0 Unchecked, 11.7s Time] [2023-11-26 11:46:04,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2023-11-26 11:46:04,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 93. [2023-11-26 11:46:04,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 57 states have (on average 1.0701754385964912) internal successors, (61), 59 states have internal predecessors, (61), 24 states have call successors, (24), 10 states have call predecessors, (24), 11 states have return successors, (24), 23 states have call predecessors, (24), 22 states have call successors, (24) [2023-11-26 11:46:04,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 109 transitions. [2023-11-26 11:46:04,796 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 109 transitions. Word has length 32 [2023-11-26 11:46:04,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:04,797 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 109 transitions. [2023-11-26 11:46:04,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 19 states have internal predecessors, (31), 8 states have call successors, (12), 6 states have call predecessors, (12), 4 states have return successors, (8), 2 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-26 11:46:04,798 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 109 transitions. [2023-11-26 11:46:04,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-26 11:46:04,799 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:04,800 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:04,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:05,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:05,007 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:46:05,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:05,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1299588988, now seen corresponding path program 1 times [2023-11-26 11:46:05,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:05,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408333098] [2023-11-26 11:46:05,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:05,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:05,054 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:05,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [601260319] [2023-11-26 11:46:05,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:05,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:05,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:05,067 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:05,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:46:05,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:05,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 71 conjunts are in the unsatisfiable core [2023-11-26 11:46:05,249 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:05,261 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-26 11:46:05,270 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-26 11:46:05,938 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-26 11:46:05,947 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-26 11:46:06,156 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 12 proven. 13 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-26 11:46:06,156 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:46:06,497 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2023-11-26 11:46:06,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:06,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408333098] [2023-11-26 11:46:06,498 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:06,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [601260319] [2023-11-26 11:46:06,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [601260319] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:46:06,498 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:46:06,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 19 [2023-11-26 11:46:06,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358042130] [2023-11-26 11:46:06,499 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:46:06,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-26 11:46:06,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:06,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-26 11:46:06,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2023-11-26 11:46:06,501 INFO L87 Difference]: Start difference. First operand 93 states and 109 transitions. Second operand has 19 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 14 states have internal predecessors, (35), 7 states have call successors, (16), 7 states have call predecessors, (16), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-26 11:46:08,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:08,215 INFO L93 Difference]: Finished difference Result 121 states and 143 transitions. [2023-11-26 11:46:08,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-26 11:46:08,216 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 14 states have internal predecessors, (35), 7 states have call successors, (16), 7 states have call predecessors, (16), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 42 [2023-11-26 11:46:08,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:08,218 INFO L225 Difference]: With dead ends: 121 [2023-11-26 11:46:08,219 INFO L226 Difference]: Without dead ends: 119 [2023-11-26 11:46:08,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 56 SyntacticMatches, 9 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=127, Invalid=685, Unknown=0, NotChecked=0, Total=812 [2023-11-26 11:46:08,220 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 82 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 597 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:08,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 192 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 597 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-11-26 11:46:08,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-11-26 11:46:08,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 117. [2023-11-26 11:46:08,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 71 states have (on average 1.0704225352112675) internal successors, (76), 74 states have internal predecessors, (76), 30 states have call successors, (30), 12 states have call predecessors, (30), 15 states have return successors, (34), 30 states have call predecessors, (34), 28 states have call successors, (34) [2023-11-26 11:46:08,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 140 transitions. [2023-11-26 11:46:08,288 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 140 transitions. Word has length 42 [2023-11-26 11:46:08,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:08,291 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 140 transitions. [2023-11-26 11:46:08,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 2.3333333333333335) internal successors, (35), 14 states have internal predecessors, (35), 7 states have call successors, (16), 7 states have call predecessors, (16), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-26 11:46:08,293 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 140 transitions. [2023-11-26 11:46:08,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2023-11-26 11:46:08,297 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:08,297 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:08,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:08,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:08,505 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:46:08,505 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:08,506 INFO L85 PathProgramCache]: Analyzing trace with hash 277886434, now seen corresponding path program 1 times [2023-11-26 11:46:08,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:08,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741950196] [2023-11-26 11:46:08,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:08,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:08,532 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:08,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1800268839] [2023-11-26 11:46:08,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:08,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:08,533 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:08,534 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:08,556 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:46:08,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:08,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-26 11:46:08,710 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:08,717 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-26 11:46:08,724 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-26 11:46:08,902 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-26 11:46:08,902 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:46:08,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:08,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741950196] [2023-11-26 11:46:08,903 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:08,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1800268839] [2023-11-26 11:46:08,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1800268839] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:46:08,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:46:08,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-26 11:46:08,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809488741] [2023-11-26 11:46:08,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:46:08,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:46:08,904 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:08,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:46:08,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:46:08,905 INFO L87 Difference]: Start difference. First operand 117 states and 140 transitions. Second operand has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-26 11:46:09,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:09,351 INFO L93 Difference]: Finished difference Result 123 states and 145 transitions. [2023-11-26 11:46:09,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:46:09,353 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 42 [2023-11-26 11:46:09,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:09,355 INFO L225 Difference]: With dead ends: 123 [2023-11-26 11:46:09,356 INFO L226 Difference]: Without dead ends: 121 [2023-11-26 11:46:09,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:46:09,357 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 16 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:09,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 62 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 11:46:09,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-11-26 11:46:09,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2023-11-26 11:46:09,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 74 states have (on average 1.0675675675675675) internal successors, (79), 77 states have internal predecessors, (79), 30 states have call successors, (30), 13 states have call predecessors, (30), 16 states have return successors, (34), 30 states have call predecessors, (34), 28 states have call successors, (34) [2023-11-26 11:46:09,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 143 transitions. [2023-11-26 11:46:09,414 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 143 transitions. Word has length 42 [2023-11-26 11:46:09,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:09,415 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 143 transitions. [2023-11-26 11:46:09,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2023-11-26 11:46:09,415 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 143 transitions. [2023-11-26 11:46:09,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-26 11:46:09,426 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:09,426 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:09,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-26 11:46:09,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-11-26 11:46:09,633 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:46:09,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:09,634 INFO L85 PathProgramCache]: Analyzing trace with hash -560035385, now seen corresponding path program 2 times [2023-11-26 11:46:09,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:09,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912572064] [2023-11-26 11:46:09,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:09,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:09,688 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:09,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [332956320] [2023-11-26 11:46:09,689 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:46:09,689 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:09,689 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:09,699 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:09,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 11:46:09,886 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 11:46:09,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:46:09,889 INFO L262 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 93 conjunts are in the unsatisfiable core [2023-11-26 11:46:09,899 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:09,913 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-26 11:46:09,919 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-26 11:46:09,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-26 11:46:10,791 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-26 11:46:10,798 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-26 11:46:11,077 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 12 proven. 37 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-26 11:46:11,077 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:46:11,575 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2023-11-26 11:46:11,576 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:11,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912572064] [2023-11-26 11:46:11,576 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:11,576 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332956320] [2023-11-26 11:46:11,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332956320] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:46:11,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-26 11:46:11,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10] total 22 [2023-11-26 11:46:11,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096873548] [2023-11-26 11:46:11,577 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-26 11:46:11,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-26 11:46:11,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:11,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-26 11:46:11,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2023-11-26 11:46:11,580 INFO L87 Difference]: Start difference. First operand 121 states and 143 transitions. Second operand has 22 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 16 states have internal predecessors, (41), 8 states have call successors, (18), 9 states have call predecessors, (18), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-26 11:46:14,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:14,510 INFO L93 Difference]: Finished difference Result 159 states and 181 transitions. [2023-11-26 11:46:14,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-11-26 11:46:14,511 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 16 states have internal predecessors, (41), 8 states have call successors, (18), 9 states have call predecessors, (18), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 48 [2023-11-26 11:46:14,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:14,513 INFO L225 Difference]: With dead ends: 159 [2023-11-26 11:46:14,513 INFO L226 Difference]: Without dead ends: 157 [2023-11-26 11:46:14,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 64 SyntacticMatches, 10 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=210, Invalid=1272, Unknown=0, NotChecked=0, Total=1482 [2023-11-26 11:46:14,515 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 132 mSDsluCounter, 325 mSDsCounter, 0 mSdLazyCounter, 1073 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 1146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:14,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 370 Invalid, 1146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1073 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2023-11-26 11:46:14,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2023-11-26 11:46:14,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 153. [2023-11-26 11:46:14,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 95 states have (on average 1.063157894736842) internal successors, (101), 98 states have internal predecessors, (101), 36 states have call successors, (36), 18 states have call predecessors, (36), 21 states have return successors, (39), 36 states have call predecessors, (39), 33 states have call successors, (39) [2023-11-26 11:46:14,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 176 transitions. [2023-11-26 11:46:14,556 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 176 transitions. Word has length 48 [2023-11-26 11:46:14,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:14,556 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 176 transitions. [2023-11-26 11:46:14,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 2.2777777777777777) internal successors, (41), 16 states have internal predecessors, (41), 8 states have call successors, (18), 9 states have call predecessors, (18), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2023-11-26 11:46:14,557 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 176 transitions. [2023-11-26 11:46:14,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2023-11-26 11:46:14,557 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:14,558 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:14,565 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:14,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:14,766 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:46:14,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:14,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1232163489, now seen corresponding path program 1 times [2023-11-26 11:46:14,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:14,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134634137] [2023-11-26 11:46:14,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:14,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:14,789 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:14,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [85525566] [2023-11-26 11:46:14,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:14,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:14,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:14,803 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:14,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 11:46:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:46:14,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 66 conjunts are in the unsatisfiable core [2023-11-26 11:46:14,962 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:14,997 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-26 11:46:15,005 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-26 11:46:15,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-26 11:46:15,071 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-26 11:46:17,158 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-26 11:46:17,158 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 57 [2023-11-26 11:46:17,283 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-26 11:46:17,284 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:46:18,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:46:18,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134634137] [2023-11-26 11:46:18,562 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-26 11:46:18,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85525566] [2023-11-26 11:46:18,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85525566] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:46:18,563 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:46:18,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2023-11-26 11:46:18,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773071519] [2023-11-26 11:46:18,566 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-11-26 11:46:18,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-26 11:46:18,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:46:18,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-26 11:46:18,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2023-11-26 11:46:18,571 INFO L87 Difference]: Start difference. First operand 153 states and 176 transitions. Second operand has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 11 states have internal predecessors, (21), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 11:46:20,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:46:20,634 INFO L93 Difference]: Finished difference Result 161 states and 182 transitions. [2023-11-26 11:46:20,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 11:46:20,635 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 11 states have internal predecessors, (21), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) Word has length 48 [2023-11-26 11:46:20,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:46:20,637 INFO L225 Difference]: With dead ends: 161 [2023-11-26 11:46:20,637 INFO L226 Difference]: Without dead ends: 159 [2023-11-26 11:46:20,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=157, Invalid=835, Unknown=0, NotChecked=0, Total=992 [2023-11-26 11:46:20,638 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 62 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 47 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:46:20,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 61 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 511 Invalid, 4 Unknown, 0 Unchecked, 1.2s Time] [2023-11-26 11:46:20,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2023-11-26 11:46:20,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 157. [2023-11-26 11:46:20,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 98 states have (on average 1.0612244897959184) internal successors, (104), 101 states have internal predecessors, (104), 36 states have call successors, (36), 19 states have call predecessors, (36), 22 states have return successors, (39), 36 states have call predecessors, (39), 33 states have call successors, (39) [2023-11-26 11:46:20,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 179 transitions. [2023-11-26 11:46:20,699 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 179 transitions. Word has length 48 [2023-11-26 11:46:20,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:46:20,699 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 179 transitions. [2023-11-26 11:46:20,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 11 states have internal predecessors, (21), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-26 11:46:20,700 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 179 transitions. [2023-11-26 11:46:20,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-26 11:46:20,701 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:46:20,701 INFO L195 NwaCegarLoop]: trace histogram [8, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:46:20,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-26 11:46:20,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-26 11:46:20,908 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:46:20,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:46:20,908 INFO L85 PathProgramCache]: Analyzing trace with hash -1233992248, now seen corresponding path program 3 times [2023-11-26 11:46:20,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:46:20,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931203135] [2023-11-26 11:46:20,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:46:20,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:46:20,930 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-26 11:46:20,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [556068708] [2023-11-26 11:46:20,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 11:46:20,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:46:20,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:46:20,932 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:46:20,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5dc7b58-2290-4ee5-a947-4ccc5fd553a3/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-26 11:46:21,096 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-26 11:46:21,096 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:46:21,101 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 120 conjunts are in the unsatisfiable core [2023-11-26 11:46:21,106 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:46:21,124 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-26 11:46:21,132 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-26 11:46:21,140 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-26 11:46:21,152 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-11-26 11:46:22,193 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-26 11:46:22,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2023-11-26 11:46:22,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11