./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_array_list_pop_back_harness_negated.i --full-output --preprocessor.use.memory.slicer true --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version abd6749d Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/aws-c-common/aws_array_list_pop_back_harness_negated.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 64bit --witnessprinter.graph.data.programhash 6170086058ddef0567ce068e99e2f7e7f3c4f11277dc0a8722fb7a0816604f99 --preprocessor.use.memory.slicer true --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 06:40:34,540 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 06:40:34,583 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 06:40:34,587 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 06:40:34,588 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 06:40:34,621 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 06:40:34,621 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 06:40:34,622 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 06:40:34,623 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 06:40:34,627 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 06:40:34,627 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 06:40:34,628 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 06:40:34,629 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 06:40:34,630 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 06:40:34,630 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 06:40:34,630 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 06:40:34,631 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 06:40:34,631 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 06:40:34,631 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 06:40:34,632 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 06:40:34,632 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 06:40:34,632 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 06:40:34,633 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 06:40:34,633 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 06:40:34,633 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 06:40:34,633 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 06:40:34,634 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 06:40:34,634 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 06:40:34,634 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 06:40:34,635 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 06:40:34,635 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 06:40:34,635 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 06:40:34,635 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 06:40:34,636 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 06:40:34,636 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 06:40:34,636 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 06:40:34,636 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 06:40:34,637 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 06:40:34,637 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 06:40:34,637 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6170086058ddef0567ce068e99e2f7e7f3c4f11277dc0a8722fb7a0816604f99 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> true [2023-11-23 06:40:34,846 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 06:40:34,875 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 06:40:34,877 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 06:40:34,878 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 06:40:34,879 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 06:40:34,880 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_array_list_pop_back_harness_negated.i [2023-11-23 06:40:36,076 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 06:40:36,559 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 06:40:36,560 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_list_pop_back_harness_negated.i [2023-11-23 06:40:36,609 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d96ba235/7b584393f1484d8986d378c376c2f941/FLAG89073b4b3 [2023-11-23 06:40:36,625 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d96ba235/7b584393f1484d8986d378c376c2f941 [2023-11-23 06:40:36,630 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 06:40:36,632 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 06:40:36,636 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 06:40:36,636 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 06:40:36,642 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 06:40:36,644 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:40:36" (1/1) ... [2023-11-23 06:40:36,645 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61b68726 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:36, skipping insertion in model container [2023-11-23 06:40:36,646 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 06:40:36" (1/1) ... [2023-11-23 06:40:36,727 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 06:40:37,000 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_list_pop_back_harness_negated.i[4497,4510] [2023-11-23 06:40:37,008 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_list_pop_back_harness_negated.i[4557,4570] [2023-11-23 06:40:37,719 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:40:37,723 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:40:37,724 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:40:37,727 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:40:37,728 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:40:37,744 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:40:37,749 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:40:37,753 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:40:37,754 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:40:37,757 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:40:37,759 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:40:37,760 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:40:37,761 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:40:38,010 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 06:40:38,014 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 06:40:38,016 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 06:40:38,016 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 06:40:38,020 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 06:40:38,021 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 06:40:38,021 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 06:40:38,023 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 06:40:38,025 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 06:40:38,026 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 06:40:38,113 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:40:38,119 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:40:38,166 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 06:40:38,197 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 06:40:38,208 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_list_pop_back_harness_negated.i[4497,4510] [2023-11-23 06:40:38,215 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_array_list_pop_back_harness_negated.i[4557,4570] [2023-11-23 06:40:38,285 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:40:38,286 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:40:38,287 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:40:38,289 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:40:38,290 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:40:38,296 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:40:38,299 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:40:38,300 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:40:38,300 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:40:38,302 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:40:38,303 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:40:38,306 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:40:38,307 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:40:38,358 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 06:40:38,359 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 06:40:38,359 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 06:40:38,360 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 06:40:38,362 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 06:40:38,363 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 06:40:38,364 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 06:40:38,364 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 06:40:38,368 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 06:40:38,369 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 06:40:38,412 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:40:38,417 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 06:40:38,423 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7737-7748] [2023-11-23 06:40:38,489 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 06:40:38,623 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:40:38,623 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:40:38,623 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:40:38,623 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:40:38,624 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:40:38,624 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:40:38,624 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:40:38,624 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:40:38,624 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:40:38,624 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:40:38,625 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:40:38,625 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:40:38,625 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:40:38,625 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:40:38,625 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 06:40:38,633 INFO L206 MainTranslator]: Completed translation [2023-11-23 06:40:38,633 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:38 WrapperNode [2023-11-23 06:40:38,633 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 06:40:38,634 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 06:40:38,634 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 06:40:38,634 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 06:40:38,640 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:38" (1/1) ... [2023-11-23 06:40:38,719 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:38" (1/1) ... [2023-11-23 06:40:38,799 INFO L138 Inliner]: procedures = 690, calls = 1701, calls flagged for inlining = 52, calls inlined = 8, statements flattened = 618 [2023-11-23 06:40:38,800 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 06:40:38,800 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 06:40:38,801 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 06:40:38,801 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 06:40:38,815 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:38" (1/1) ... [2023-11-23 06:40:38,816 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:38" (1/1) ... [2023-11-23 06:40:38,838 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:38" (1/1) ... [2023-11-23 06:40:38,922 INFO L188 MemorySlicer]: Split 320 memory accesses to 7 slices as follows [2, 62, 8, 236, 3, 6, 3]. 74 percent of accesses are in the largest equivalence class. The 257 initializations are split as follows [2, 10, 5, 236, 1, 0, 3]. The 8 writes are split as follows [0, 4, 1, 0, 1, 2, 0]. [2023-11-23 06:40:38,923 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:38" (1/1) ... [2023-11-23 06:40:38,923 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:38" (1/1) ... [2023-11-23 06:40:38,963 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:38" (1/1) ... [2023-11-23 06:40:38,985 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:38" (1/1) ... [2023-11-23 06:40:38,995 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:38" (1/1) ... [2023-11-23 06:40:39,000 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:38" (1/1) ... [2023-11-23 06:40:39,010 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 06:40:39,011 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 06:40:39,011 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 06:40:39,011 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 06:40:39,012 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:38" (1/1) ... [2023-11-23 06:40:39,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 06:40:39,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:40:39,050 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 06:40:39,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 06:40:39,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 06:40:39,108 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-23 06:40:39,108 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-23 06:40:39,109 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-23 06:40:39,109 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-23 06:40:39,109 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 06:40:39,110 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 06:40:39,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-23 06:40:39,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-23 06:40:39,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-23 06:40:39,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2023-11-23 06:40:39,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2023-11-23 06:40:39,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2023-11-23 06:40:39,111 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2023-11-23 06:40:39,112 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 06:40:39,112 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 06:40:39,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 06:40:39,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 06:40:39,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 06:40:39,112 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 06:40:39,112 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-23 06:40:39,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-23 06:40:39,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-23 06:40:39,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#3 [2023-11-23 06:40:39,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#4 [2023-11-23 06:40:39,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#5 [2023-11-23 06:40:39,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#6 [2023-11-23 06:40:39,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 06:40:39,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 06:40:39,115 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 06:40:39,115 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 06:40:39,116 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2023-11-23 06:40:39,116 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2023-11-23 06:40:39,116 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-23 06:40:39,116 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-23 06:40:39,116 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2023-11-23 06:40:39,117 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2023-11-23 06:40:39,117 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 06:40:39,117 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 06:40:39,117 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2023-11-23 06:40:39,117 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2023-11-23 06:40:39,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 06:40:39,117 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-23 06:40:39,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-23 06:40:39,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-23 06:40:39,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#3 [2023-11-23 06:40:39,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#4 [2023-11-23 06:40:39,118 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#5 [2023-11-23 06:40:39,119 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#6 [2023-11-23 06:40:39,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2023-11-23 06:40:39,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2023-11-23 06:40:39,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2023-11-23 06:40:39,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#3 [2023-11-23 06:40:39,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#4 [2023-11-23 06:40:39,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#5 [2023-11-23 06:40:39,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#6 [2023-11-23 06:40:39,120 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 06:40:39,120 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 06:40:39,120 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-23 06:40:39,120 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-23 06:40:39,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-23 06:40:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-23 06:40:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-23 06:40:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2023-11-23 06:40:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2023-11-23 06:40:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2023-11-23 06:40:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2023-11-23 06:40:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2023-11-23 06:40:39,123 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2023-11-23 06:40:39,123 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2023-11-23 06:40:39,123 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2023-11-23 06:40:39,123 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-23 06:40:39,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-23 06:40:39,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-23 06:40:39,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-23 06:40:39,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-23 06:40:39,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-23 06:40:39,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-23 06:40:39,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-23 06:40:39,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-23 06:40:39,483 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 06:40:39,486 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 06:40:40,104 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 06:40:40,213 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 06:40:40,214 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 06:40:40,214 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:40:40 BoogieIcfgContainer [2023-11-23 06:40:40,215 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 06:40:40,217 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 06:40:40,217 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 06:40:40,221 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 06:40:40,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 06:40:36" (1/3) ... [2023-11-23 06:40:40,221 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18654b61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:40:40, skipping insertion in model container [2023-11-23 06:40:40,226 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 06:40:38" (2/3) ... [2023-11-23 06:40:40,228 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18654b61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 06:40:40, skipping insertion in model container [2023-11-23 06:40:40,228 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 06:40:40" (3/3) ... [2023-11-23 06:40:40,230 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_array_list_pop_back_harness_negated.i [2023-11-23 06:40:40,247 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 06:40:40,247 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 06:40:40,305 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 06:40:40,320 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;@61b8f02c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 06:40:40,321 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 06:40:40,326 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 87 states have (on average 1.2413793103448276) internal successors, (108), 88 states have internal predecessors, (108), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2023-11-23 06:40:40,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-23 06:40:40,337 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:40:40,338 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:40:40,338 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:40:40,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:40:40,347 INFO L85 PathProgramCache]: Analyzing trace with hash 1778973253, now seen corresponding path program 1 times [2023-11-23 06:40:40,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:40:40,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393919628] [2023-11-23 06:40:40,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:40:40,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:40:40,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:40:40,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:40:40,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:40:40,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 06:40:40,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:40:41,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:40:41,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:40:41,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 06:40:41,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:40:41,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 06:40:41,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:40:41,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 06:40:41,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:40:41,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 06:40:41,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:40:41,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 06:40:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:40:41,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 06:40:41,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:40:41,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 06:40:41,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:40:41,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 06:40:41,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:40:41,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 06:40:41,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:40:41,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 06:40:41,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:40:41,387 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 06:40:41,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:40:41,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393919628] [2023-11-23 06:40:41,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393919628] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:40:41,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:40:41,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 06:40:41,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134886365] [2023-11-23 06:40:41,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:40:41,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 06:40:41,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:40:41,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 06:40:41,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 06:40:41,436 INFO L87 Difference]: Start difference. First operand has 153 states, 87 states have (on average 1.2413793103448276) internal successors, (108), 88 states have internal predecessors, (108), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 06:40:42,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:40:42,488 INFO L93 Difference]: Finished difference Result 332 states and 500 transitions. [2023-11-23 06:40:42,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 06:40:42,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 81 [2023-11-23 06:40:42,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:40:42,501 INFO L225 Difference]: With dead ends: 332 [2023-11-23 06:40:42,501 INFO L226 Difference]: Without dead ends: 182 [2023-11-23 06:40:42,505 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 06:40:42,508 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 100 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 06:40:42,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 163 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 06:40:42,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2023-11-23 06:40:42,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 151. [2023-11-23 06:40:42,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 86 states have (on average 1.2093023255813953) internal successors, (104), 87 states have internal predecessors, (104), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2023-11-23 06:40:42,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 199 transitions. [2023-11-23 06:40:42,563 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 199 transitions. Word has length 81 [2023-11-23 06:40:42,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:40:42,564 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 199 transitions. [2023-11-23 06:40:42,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 06:40:42,564 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 199 transitions. [2023-11-23 06:40:42,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-23 06:40:42,567 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:40:42,567 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:40:42,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 06:40:42,581 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:40:42,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:40:42,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1322113463, now seen corresponding path program 1 times [2023-11-23 06:40:42,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:40:42,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855044499] [2023-11-23 06:40:42,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:40:42,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:40:42,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:40:42,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:40:42,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:40:42,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 06:40:42,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:40:42,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:40:42,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:40:42,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 06:40:42,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:40:42,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 06:40:42,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:40:43,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 06:40:43,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:40:43,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 06:40:43,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:40:43,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 06:40:43,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:40:43,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 06:40:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:40:43,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 06:40:43,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:40:43,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 06:40:43,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:40:43,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 06:40:43,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:40:43,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 06:40:43,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:40:43,141 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2023-11-23 06:40:43,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:40:43,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855044499] [2023-11-23 06:40:43,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855044499] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:40:43,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:40:43,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 06:40:43,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812961404] [2023-11-23 06:40:43,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:40:43,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 06:40:43,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:40:43,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 06:40:43,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-23 06:40:43,144 INFO L87 Difference]: Start difference. First operand 151 states and 199 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 06:40:44,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:40:44,189 INFO L93 Difference]: Finished difference Result 311 states and 427 transitions. [2023-11-23 06:40:44,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 06:40:44,190 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 81 [2023-11-23 06:40:44,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:40:44,196 INFO L225 Difference]: With dead ends: 311 [2023-11-23 06:40:44,196 INFO L226 Difference]: Without dead ends: 183 [2023-11-23 06:40:44,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-23 06:40:44,198 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 102 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 140 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 140 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 06:40:44,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 271 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [140 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 06:40:44,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2023-11-23 06:40:44,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 152. [2023-11-23 06:40:44,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 87 states have (on average 1.206896551724138) internal successors, (105), 88 states have internal predecessors, (105), 48 states have call successors, (48), 16 states have call predecessors, (48), 16 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2023-11-23 06:40:44,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 200 transitions. [2023-11-23 06:40:44,225 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 200 transitions. Word has length 81 [2023-11-23 06:40:44,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:40:44,226 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 200 transitions. [2023-11-23 06:40:44,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-23 06:40:44,226 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 200 transitions. [2023-11-23 06:40:44,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-23 06:40:44,228 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:40:44,228 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:40:44,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 06:40:44,228 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:40:44,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:40:44,229 INFO L85 PathProgramCache]: Analyzing trace with hash -829487289, now seen corresponding path program 1 times [2023-11-23 06:40:44,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:40:44,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537642511] [2023-11-23 06:40:44,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:40:44,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:40:44,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:40:44,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 06:40:44,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:40:44,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-23 06:40:44,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:40:44,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-23 06:40:44,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:40:44,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 06:40:44,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:40:44,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 06:40:44,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:40:44,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-23 06:40:44,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:40:44,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 06:40:44,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:40:44,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-23 06:40:44,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:40:45,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-23 06:40:45,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:40:45,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-23 06:40:45,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:40:45,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 06:40:45,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:40:45,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-23 06:40:45,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:40:45,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-11-23 06:40:45,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:40:45,049 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2023-11-23 06:40:45,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:40:45,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537642511] [2023-11-23 06:40:45,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537642511] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-23 06:40:45,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607050190] [2023-11-23 06:40:45,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:40:45,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:40:45,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:40:45,053 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:40:45,059 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-23 06:40:45,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:40:45,571 INFO L262 TraceCheckSpWp]: Trace formula consists of 2460 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 06:40:45,580 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:40:45,675 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-23 06:40:45,675 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:40:45,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607050190] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:40:45,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 06:40:45,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2023-11-23 06:40:45,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127819416] [2023-11-23 06:40:45,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:40:45,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 06:40:45,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:40:45,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 06:40:45,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-23 06:40:45,678 INFO L87 Difference]: Start difference. First operand 152 states and 200 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-23 06:40:45,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:40:45,985 INFO L93 Difference]: Finished difference Result 273 states and 367 transitions. [2023-11-23 06:40:45,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 06:40:45,987 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 81 [2023-11-23 06:40:45,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:40:45,990 INFO L225 Difference]: With dead ends: 273 [2023-11-23 06:40:45,990 INFO L226 Difference]: Without dead ends: 154 [2023-11-23 06:40:45,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-23 06:40:45,995 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 38 mSDsluCounter, 437 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 06:40:45,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 602 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 06:40:45,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-11-23 06:40:46,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2023-11-23 06:40:46,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 88 states have (on average 1.2045454545454546) internal successors, (106), 90 states have internal predecessors, (106), 48 states have call successors, (48), 16 states have call predecessors, (48), 17 states have return successors, (52), 47 states have call predecessors, (52), 47 states have call successors, (52) [2023-11-23 06:40:46,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 206 transitions. [2023-11-23 06:40:46,018 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 206 transitions. Word has length 81 [2023-11-23 06:40:46,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:40:46,019 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 206 transitions. [2023-11-23 06:40:46,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-23 06:40:46,019 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 206 transitions. [2023-11-23 06:40:46,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2023-11-23 06:40:46,024 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:40:46,024 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:40:46,044 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-23 06:40:46,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:40:46,240 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:40:46,241 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:40:46,241 INFO L85 PathProgramCache]: Analyzing trace with hash -30678691, now seen corresponding path program 1 times [2023-11-23 06:40:46,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:40:46,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494693872] [2023-11-23 06:40:46,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:40:46,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:40:46,306 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 06:40:46,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1390676698] [2023-11-23 06:40:46,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:40:46,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:40:46,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:40:46,321 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:40:46,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-23 06:40:46,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 06:40:46,855 INFO L262 TraceCheckSpWp]: Trace formula consists of 2647 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 06:40:46,860 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:40:46,930 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-11-23 06:40:46,930 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:40:46,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:40:46,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494693872] [2023-11-23 06:40:46,931 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 06:40:46,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390676698] [2023-11-23 06:40:46,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390676698] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:40:46,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:40:46,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 06:40:46,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987618883] [2023-11-23 06:40:46,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:40:46,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 06:40:46,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:40:46,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 06:40:46,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 06:40:46,935 INFO L87 Difference]: Start difference. First operand 154 states and 206 transitions. Second operand has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-23 06:40:47,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:40:47,408 INFO L93 Difference]: Finished difference Result 266 states and 357 transitions. [2023-11-23 06:40:47,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 06:40:47,409 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) Word has length 94 [2023-11-23 06:40:47,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:40:47,411 INFO L225 Difference]: With dead ends: 266 [2023-11-23 06:40:47,411 INFO L226 Difference]: Without dead ends: 154 [2023-11-23 06:40:47,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-23 06:40:47,412 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 56 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 06:40:47,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 868 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 06:40:47,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2023-11-23 06:40:47,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2023-11-23 06:40:47,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 88 states have (on average 1.2045454545454546) internal successors, (106), 90 states have internal predecessors, (106), 48 states have call successors, (48), 16 states have call predecessors, (48), 17 states have return successors, (49), 47 states have call predecessors, (49), 47 states have call successors, (49) [2023-11-23 06:40:47,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 203 transitions. [2023-11-23 06:40:47,432 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 203 transitions. Word has length 94 [2023-11-23 06:40:47,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:40:47,432 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 203 transitions. [2023-11-23 06:40:47,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 4 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (15), 3 states have call predecessors, (15), 4 states have call successors, (15) [2023-11-23 06:40:47,433 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 203 transitions. [2023-11-23 06:40:47,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-23 06:40:47,434 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:40:47,434 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:40:47,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-23 06:40:47,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-11-23 06:40:47,654 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:40:47,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:40:47,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1829493219, now seen corresponding path program 2 times [2023-11-23 06:40:47,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:40:47,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332058813] [2023-11-23 06:40:47,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:40:47,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:40:47,723 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 06:40:47,724 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1037841498] [2023-11-23 06:40:47,724 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 06:40:47,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:40:47,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:40:47,725 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:40:47,744 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-23 06:40:48,121 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-23 06:40:48,121 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 06:40:48,126 INFO L262 TraceCheckSpWp]: Trace formula consists of 1842 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 06:40:48,130 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:40:48,162 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2023-11-23 06:40:48,162 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 06:40:48,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:40:48,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332058813] [2023-11-23 06:40:48,163 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 06:40:48,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1037841498] [2023-11-23 06:40:48,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1037841498] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 06:40:48,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 06:40:48,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 06:40:48,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520491628] [2023-11-23 06:40:48,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 06:40:48,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 06:40:48,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:40:48,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 06:40:48,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 06:40:48,165 INFO L87 Difference]: Start difference. First operand 154 states and 203 transitions. Second operand has 6 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-23 06:40:48,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:40:48,400 INFO L93 Difference]: Finished difference Result 162 states and 211 transitions. [2023-11-23 06:40:48,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 06:40:48,400 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 107 [2023-11-23 06:40:48,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:40:48,402 INFO L225 Difference]: With dead ends: 162 [2023-11-23 06:40:48,402 INFO L226 Difference]: Without dead ends: 160 [2023-11-23 06:40:48,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-23 06:40:48,403 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 5 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 06:40:48,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 899 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 06:40:48,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-11-23 06:40:48,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 159. [2023-11-23 06:40:48,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 91 states have (on average 1.1978021978021978) internal successors, (109), 93 states have internal predecessors, (109), 49 states have call successors, (49), 17 states have call predecessors, (49), 18 states have return successors, (50), 48 states have call predecessors, (50), 48 states have call successors, (50) [2023-11-23 06:40:48,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 208 transitions. [2023-11-23 06:40:48,421 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 208 transitions. Word has length 107 [2023-11-23 06:40:48,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:40:48,421 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 208 transitions. [2023-11-23 06:40:48,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2023-11-23 06:40:48,422 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 208 transitions. [2023-11-23 06:40:48,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2023-11-23 06:40:48,423 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:40:48,423 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:40:48,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-23 06:40:48,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:40:48,641 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:40:48,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:40:48,642 INFO L85 PathProgramCache]: Analyzing trace with hash 1382196391, now seen corresponding path program 3 times [2023-11-23 06:40:48,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:40:48,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695489835] [2023-11-23 06:40:48,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:40:48,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:40:48,712 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 06:40:48,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1237408423] [2023-11-23 06:40:48,713 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 06:40:48,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:40:48,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:40:48,714 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:40:48,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-23 06:40:49,383 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-23 06:40:49,384 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 06:40:49,392 INFO L262 TraceCheckSpWp]: Trace formula consists of 2120 conjuncts, 21 conjunts are in the unsatisfiable core [2023-11-23 06:40:49,397 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 06:40:49,485 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-11-23 06:40:49,485 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 06:40:49,697 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-11-23 06:40:49,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 06:40:49,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695489835] [2023-11-23 06:40:49,697 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 06:40:49,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1237408423] [2023-11-23 06:40:49,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1237408423] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 06:40:49,698 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 06:40:49,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 8 [2023-11-23 06:40:49,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522489220] [2023-11-23 06:40:49,698 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 06:40:49,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 06:40:49,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 06:40:49,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 06:40:49,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 06:40:49,700 INFO L87 Difference]: Start difference. First operand 159 states and 208 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-23 06:40:50,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 06:40:50,157 INFO L93 Difference]: Finished difference Result 280 states and 371 transitions. [2023-11-23 06:40:50,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 06:40:50,158 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 120 [2023-11-23 06:40:50,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 06:40:50,159 INFO L225 Difference]: With dead ends: 280 [2023-11-23 06:40:50,160 INFO L226 Difference]: Without dead ends: 166 [2023-11-23 06:40:50,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-23 06:40:50,161 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 28 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 06:40:50,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 661 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 06:40:50,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2023-11-23 06:40:50,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 164. [2023-11-23 06:40:50,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 94 states have (on average 1.1914893617021276) internal successors, (112), 95 states have internal predecessors, (112), 51 states have call successors, (51), 18 states have call predecessors, (51), 18 states have return successors, (52), 50 states have call predecessors, (52), 50 states have call successors, (52) [2023-11-23 06:40:50,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 215 transitions. [2023-11-23 06:40:50,177 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 215 transitions. Word has length 120 [2023-11-23 06:40:50,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 06:40:50,178 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 215 transitions. [2023-11-23 06:40:50,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-23 06:40:50,178 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 215 transitions. [2023-11-23 06:40:50,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2023-11-23 06:40:50,180 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 06:40:50,180 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 06:40:50,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-23 06:40:50,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:40:50,392 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 06:40:50,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 06:40:50,392 INFO L85 PathProgramCache]: Analyzing trace with hash 137980007, now seen corresponding path program 1 times [2023-11-23 06:40:50,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 06:40:50,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287356572] [2023-11-23 06:40:50,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:40:50,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 06:40:50,467 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 06:40:50,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [174858346] [2023-11-23 06:40:50,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 06:40:50,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 06:40:50,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 06:40:50,469 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 06:40:50,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process Killed by 15