./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/aws-c-common/aws_priority_queue_clean_up_harness.i --full-output --preprocessor.use.memory.slicer false --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_priority_queue_clean_up_harness.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 efb3bc3d53d5de978717fadeb26804aec5f97721ade955fc2d1463ef24ff6010 --preprocessor.use.memory.slicer false --- Real Ultimate output --- This is Ultimate 0.2.3-?-abd6749-m [2023-11-23 08:57:19,212 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 08:57:19,268 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2023-11-23 08:57:19,273 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 08:57:19,274 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 08:57:19,294 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 08:57:19,295 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 08:57:19,295 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 08:57:19,296 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-23 08:57:19,299 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-23 08:57:19,299 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 08:57:19,299 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 08:57:19,300 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-23 08:57:19,301 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-23 08:57:19,301 INFO L153 SettingsManager]: * Use SBE=true [2023-11-23 08:57:19,301 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 08:57:19,301 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 08:57:19,301 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 08:57:19,302 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 08:57:19,302 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 08:57:19,302 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 08:57:19,302 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 08:57:19,302 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 08:57:19,303 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 08:57:19,303 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 08:57:19,303 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-23 08:57:19,303 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 08:57:19,304 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 08:57:19,304 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:57:19,304 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 08:57:19,305 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 08:57:19,305 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 08:57:19,305 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-23 08:57:19,305 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 08:57:19,306 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 08:57:19,306 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-23 08:57:19,306 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 08:57:19,306 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-23 08:57:19,306 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 08:57:19,306 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> efb3bc3d53d5de978717fadeb26804aec5f97721ade955fc2d1463ef24ff6010 Applying setting for plugin de.uni_freiburg.informatik.ultimate.boogie.preprocessor: Use memory slicer -> false [2023-11-23 08:57:19,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 08:57:19,576 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 08:57:19,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 08:57:19,579 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 08:57:19,579 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 08:57:19,580 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/aws-c-common/aws_priority_queue_clean_up_harness.i [2023-11-23 08:57:20,650 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 08:57:21,050 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 08:57:21,051 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/aws-c-common/aws_priority_queue_clean_up_harness.i [2023-11-23 08:57:21,094 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13d3dfa2f/83ba5cedfa984794844b4c92eeb8e9c1/FLAG969701c50 [2023-11-23 08:57:21,107 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13d3dfa2f/83ba5cedfa984794844b4c92eeb8e9c1 [2023-11-23 08:57:21,109 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 08:57:21,110 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 08:57:21,111 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 08:57:21,123 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 08:57:21,128 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 08:57:21,128 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:57:21" (1/1) ... [2023-11-23 08:57:21,129 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a249206 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:57:21, skipping insertion in model container [2023-11-23 08:57:21,129 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:57:21" (1/1) ... [2023-11-23 08:57:21,215 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 08:57:21,383 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_priority_queue_clean_up_harness.i[4501,4514] [2023-11-23 08:57:21,388 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_priority_queue_clean_up_harness.i[4561,4574] [2023-11-23 08:57:21,998 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:57:22,003 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:57:22,004 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:57:22,005 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:57:22,007 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:57:22,017 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:57:22,018 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:57:22,019 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:57:22,020 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:57:22,219 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:57:22,220 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:57:22,220 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:57:22,221 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:57:22,222 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:57:22,222 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:57:22,223 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:57:22,223 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:57:22,224 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:57:22,224 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:57:22,326 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:57:22,332 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:57:22,380 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:57:22,418 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 08:57:22,433 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_priority_queue_clean_up_harness.i[4501,4514] [2023-11-23 08:57:22,434 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_priority_queue_clean_up_harness.i[4561,4574] [2023-11-23 08:57:22,488 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:57:22,492 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:57:22,492 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:57:22,493 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:57:22,494 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:57:22,499 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:57:22,500 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:57:22,500 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:57:22,501 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:57:22,565 WARN L635 FunctionHandler]: implicit declaration of function __atomic_load_n [2023-11-23 08:57:22,565 WARN L635 FunctionHandler]: implicit declaration of function __atomic_store_n [2023-11-23 08:57:22,566 WARN L635 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2023-11-23 08:57:22,566 WARN L635 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2023-11-23 08:57:22,567 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2023-11-23 08:57:22,567 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2023-11-23 08:57:22,567 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2023-11-23 08:57:22,568 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2023-11-23 08:57:22,568 WARN L635 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2023-11-23 08:57:22,568 WARN L635 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2023-11-23 08:57:22,602 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:57:22,602 WARN L1590 CHandler]: Possible shadowing of function index [2023-11-23 08:57:22,609 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ __volatile__("" : : "r"(pBuf) : "memory"); [7703-7714] [2023-11-23 08:57:22,626 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 08:57:22,745 WARN L675 CHandler]: The function __atomic_fetch_or is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:57:22,746 WARN L675 CHandler]: The function __atomic_fetch_sub is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:57:22,746 WARN L675 CHandler]: The function __atomic_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:57:22,746 WARN L675 CHandler]: The function __atomic_fetch_xor is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:57:22,746 WARN L675 CHandler]: The function htons is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:57:22,746 WARN L675 CHandler]: The function ntohl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:57:22,746 WARN L675 CHandler]: The function __atomic_compare_exchange_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:57:22,746 WARN L675 CHandler]: The function __atomic_fetch_add is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:57:22,747 WARN L675 CHandler]: The function fprintf is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:57:22,747 WARN L675 CHandler]: The function htonl is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:57:22,747 WARN L675 CHandler]: The function __atomic_store_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:57:22,747 WARN L675 CHandler]: The function ntohs is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:57:22,747 WARN L675 CHandler]: The function __atomic_load_n is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:57:22,747 WARN L675 CHandler]: The function __atomic_thread_fence is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:57:22,747 WARN L675 CHandler]: The function __atomic_fetch_and is called, but not defined or handled by StandardFunctionHandler. [2023-11-23 08:57:22,753 INFO L206 MainTranslator]: Completed translation [2023-11-23 08:57:22,753 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:57:22 WrapperNode [2023-11-23 08:57:22,753 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 08:57:22,754 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 08:57:22,754 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 08:57:22,754 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 08:57:22,759 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:57:22" (1/1) ... [2023-11-23 08:57:22,813 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:57:22" (1/1) ... [2023-11-23 08:57:22,883 INFO L138 Inliner]: procedures = 688, calls = 1498, calls flagged for inlining = 55, calls inlined = 9, statements flattened = 596 [2023-11-23 08:57:22,883 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 08:57:22,884 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 08:57:22,884 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 08:57:22,884 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 08:57:22,891 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:57:22" (1/1) ... [2023-11-23 08:57:22,891 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:57:22" (1/1) ... [2023-11-23 08:57:22,896 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:57:22" (1/1) ... [2023-11-23 08:57:22,900 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:57:22" (1/1) ... [2023-11-23 08:57:22,935 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:57:22" (1/1) ... [2023-11-23 08:57:22,938 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:57:22" (1/1) ... [2023-11-23 08:57:22,941 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:57:22" (1/1) ... [2023-11-23 08:57:22,943 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:57:22" (1/1) ... [2023-11-23 08:57:22,965 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 08:57:22,966 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 08:57:22,966 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 08:57:22,966 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 08:57:22,967 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:57:22" (1/1) ... [2023-11-23 08:57:22,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 08:57:22,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:57:23,013 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 08:57:23,031 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 08:57:23,075 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2023-11-23 08:57:23,076 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2023-11-23 08:57:23,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 08:57:23,076 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2023-11-23 08:57:23,076 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2023-11-23 08:57:23,076 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2023-11-23 08:57:23,077 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2023-11-23 08:57:23,077 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2023-11-23 08:57:23,078 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2023-11-23 08:57:23,078 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 08:57:23,078 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2023-11-23 08:57:23,078 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2023-11-23 08:57:23,078 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2023-11-23 08:57:23,078 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2023-11-23 08:57:23,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-23 08:57:23,078 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 08:57:23,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-23 08:57:23,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 08:57:23,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 08:57:23,080 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_clean_up [2023-11-23 08:57:23,080 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_clean_up [2023-11-23 08:57:23,080 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2023-11-23 08:57:23,080 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2023-11-23 08:57:23,080 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2023-11-23 08:57:23,080 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2023-11-23 08:57:23,080 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2023-11-23 08:57:23,081 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2023-11-23 08:57:23,081 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2023-11-23 08:57:23,081 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2023-11-23 08:57:23,081 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-11-23 08:57:23,081 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-11-23 08:57:23,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 08:57:23,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-23 08:57:23,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-23 08:57:23,082 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2023-11-23 08:57:23,082 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2023-11-23 08:57:23,082 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2023-11-23 08:57:23,082 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2023-11-23 08:57:23,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 08:57:23,083 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2023-11-23 08:57:23,083 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2023-11-23 08:57:23,083 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2023-11-23 08:57:23,083 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2023-11-23 08:57:23,084 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2023-11-23 08:57:23,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2023-11-23 08:57:23,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 08:57:23,332 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 08:57:23,334 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 08:57:23,885 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 08:57:23,990 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 08:57:23,991 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-11-23 08:57:23,991 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:57:23 BoogieIcfgContainer [2023-11-23 08:57:23,992 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 08:57:24,007 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 08:57:24,007 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 08:57:24,010 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 08:57:24,010 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:57:21" (1/3) ... [2023-11-23 08:57:24,011 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4666376b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:57:24, skipping insertion in model container [2023-11-23 08:57:24,011 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:57:22" (2/3) ... [2023-11-23 08:57:24,013 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4666376b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:57:24, skipping insertion in model container [2023-11-23 08:57:24,013 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:57:23" (3/3) ... [2023-11-23 08:57:24,014 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_clean_up_harness.i [2023-11-23 08:57:24,029 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 08:57:24,030 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 08:57:24,084 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 08:57:24,090 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;@5117baf4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 08:57:24,090 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 08:57:24,094 INFO L276 IsEmpty]: Start isEmpty. Operand has 148 states, 95 states have (on average 1.3157894736842106) internal successors, (125), 96 states have internal predecessors, (125), 35 states have call successors, (35), 17 states have call predecessors, (35), 17 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2023-11-23 08:57:24,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-23 08:57:24,112 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:57:24,113 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 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] [2023-11-23 08:57:24,114 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:57:24,121 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:57:24,121 INFO L85 PathProgramCache]: Analyzing trace with hash 2011890415, now seen corresponding path program 1 times [2023-11-23 08:57:24,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:57:24,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874241170] [2023-11-23 08:57:24,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:57:24,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:57:24,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:24,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:57:24,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:24,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:57:24,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:24,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 08:57:24,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:24,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 08:57:24,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:24,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 08:57:24,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:24,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 08:57:24,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:24,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 08:57:24,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:24,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 08:57:24,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:24,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 08:57:24,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:24,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:57:24,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:24,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 08:57:24,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:24,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 08:57:24,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:24,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:57:24,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:24,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 08:57:24,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:24,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-23 08:57:24,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:24,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2023-11-23 08:57:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:24,791 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-11-23 08:57:24,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:57:24,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874241170] [2023-11-23 08:57:24,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1874241170] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:57:24,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:57:24,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 08:57:24,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535538664] [2023-11-23 08:57:24,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:57:24,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 08:57:24,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:57:24,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 08:57:24,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 08:57:24,825 INFO L87 Difference]: Start difference. First operand has 148 states, 95 states have (on average 1.3157894736842106) internal successors, (125), 96 states have internal predecessors, (125), 35 states have call successors, (35), 17 states have call predecessors, (35), 17 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 08:57:25,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:57:25,431 INFO L93 Difference]: Finished difference Result 329 states and 472 transitions. [2023-11-23 08:57:25,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 08:57:25,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 98 [2023-11-23 08:57:25,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:57:25,446 INFO L225 Difference]: With dead ends: 329 [2023-11-23 08:57:25,447 INFO L226 Difference]: Without dead ends: 187 [2023-11-23 08:57:25,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-23 08:57:25,454 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 163 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 08:57:25,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 174 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 08:57:25,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2023-11-23 08:57:25,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 146. [2023-11-23 08:57:25,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 93 states have (on average 1.2688172043010753) internal successors, (118), 95 states have internal predecessors, (118), 35 states have call successors, (35), 17 states have call predecessors, (35), 17 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-23 08:57:25,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 187 transitions. [2023-11-23 08:57:25,493 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 187 transitions. Word has length 98 [2023-11-23 08:57:25,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:57:25,493 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 187 transitions. [2023-11-23 08:57:25,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2023-11-23 08:57:25,494 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 187 transitions. [2023-11-23 08:57:25,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-11-23 08:57:25,499 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:57:25,499 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:57:25,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 08:57:25,500 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:57:25,500 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:57:25,500 INFO L85 PathProgramCache]: Analyzing trace with hash 677025623, now seen corresponding path program 1 times [2023-11-23 08:57:25,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:57:25,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949318931] [2023-11-23 08:57:25,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:57:25,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:57:25,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:25,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:57:25,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:25,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:57:25,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:25,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 08:57:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:25,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 08:57:25,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:25,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 08:57:25,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:25,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 08:57:25,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:25,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 08:57:25,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:25,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 08:57:25,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:25,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 08:57:25,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:25,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:57:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:26,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-23 08:57:26,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:26,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2023-11-23 08:57:26,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:26,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:57:26,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:26,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 08:57:26,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:26,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 08:57:26,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:26,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:57:26,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:26,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:57:26,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:26,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-11-23 08:57:26,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:26,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 08:57:26,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:26,098 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-23 08:57:26,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:57:26,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949318931] [2023-11-23 08:57:26,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949318931] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:57:26,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:57:26,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 08:57:26,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322796178] [2023-11-23 08:57:26,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:57:26,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 08:57:26,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:57:26,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 08:57:26,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-23 08:57:26,102 INFO L87 Difference]: Start difference. First operand 146 states and 187 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-23 08:57:26,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:57:26,841 INFO L93 Difference]: Finished difference Result 318 states and 425 transitions. [2023-11-23 08:57:26,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-23 08:57:26,842 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 113 [2023-11-23 08:57:26,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:57:26,844 INFO L225 Difference]: With dead ends: 318 [2023-11-23 08:57:26,844 INFO L226 Difference]: Without dead ends: 229 [2023-11-23 08:57:26,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:57:26,845 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 334 mSDsluCounter, 348 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 08:57:26,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 463 Invalid, 675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 08:57:26,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2023-11-23 08:57:26,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 146. [2023-11-23 08:57:26,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 93 states have (on average 1.2580645161290323) internal successors, (117), 95 states have internal predecessors, (117), 35 states have call successors, (35), 17 states have call predecessors, (35), 17 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-23 08:57:26,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 186 transitions. [2023-11-23 08:57:26,862 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 186 transitions. Word has length 113 [2023-11-23 08:57:26,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:57:26,863 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 186 transitions. [2023-11-23 08:57:26,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2023-11-23 08:57:26,864 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 186 transitions. [2023-11-23 08:57:26,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-11-23 08:57:26,867 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:57:26,867 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 08:57:26,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 08:57:26,869 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:57:26,869 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:57:26,870 INFO L85 PathProgramCache]: Analyzing trace with hash -607915131, now seen corresponding path program 1 times [2023-11-23 08:57:26,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:57:26,870 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14071305] [2023-11-23 08:57:26,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:57:26,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:57:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:27,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:57:27,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:27,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-23 08:57:27,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:27,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 08:57:27,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:27,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2023-11-23 08:57:27,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:27,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 08:57:27,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:27,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 08:57:27,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:27,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-23 08:57:27,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:27,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2023-11-23 08:57:27,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:27,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 08:57:27,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:27,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-23 08:57:27,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:27,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-23 08:57:27,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:27,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-23 08:57:27,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:27,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-11-23 08:57:27,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:27,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:57:27,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:27,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-23 08:57:27,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:27,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2023-11-23 08:57:27,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:27,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:57:27,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:27,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-23 08:57:27,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:27,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2023-11-23 08:57:27,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:27,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2023-11-23 08:57:27,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:27,467 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2023-11-23 08:57:27,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:57:27,467 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14071305] [2023-11-23 08:57:27,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14071305] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:57:27,468 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:57:27,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 08:57:27,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198087646] [2023-11-23 08:57:27,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:57:27,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 08:57:27,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:57:27,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 08:57:27,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-23 08:57:27,472 INFO L87 Difference]: Start difference. First operand 146 states and 186 transitions. Second operand has 10 states, 10 states have (on average 4.9) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2023-11-23 08:57:28,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:57:28,455 INFO L93 Difference]: Finished difference Result 348 states and 466 transitions. [2023-11-23 08:57:28,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-23 08:57:28,456 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 121 [2023-11-23 08:57:28,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:57:28,457 INFO L225 Difference]: With dead ends: 348 [2023-11-23 08:57:28,457 INFO L226 Difference]: Without dead ends: 210 [2023-11-23 08:57:28,458 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2023-11-23 08:57:28,459 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 327 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 08:57:28,459 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 659 Invalid, 952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 08:57:28,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2023-11-23 08:57:28,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 148. [2023-11-23 08:57:28,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 94 states have (on average 1.2553191489361701) internal successors, (118), 97 states have internal predecessors, (118), 35 states have call successors, (35), 17 states have call predecessors, (35), 18 states have return successors, (36), 34 states have call predecessors, (36), 34 states have call successors, (36) [2023-11-23 08:57:28,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 189 transitions. [2023-11-23 08:57:28,472 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 189 transitions. Word has length 121 [2023-11-23 08:57:28,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:57:28,472 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 189 transitions. [2023-11-23 08:57:28,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.9) internal successors, (49), 7 states have internal predecessors, (49), 4 states have call successors, (19), 5 states have call predecessors, (19), 3 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2023-11-23 08:57:28,473 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 189 transitions. [2023-11-23 08:57:28,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-11-23 08:57:28,474 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:57:28,474 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 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 08:57:28,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 08:57:28,475 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:57:28,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:57:28,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1181084257, now seen corresponding path program 1 times [2023-11-23 08:57:28,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:57:28,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114284059] [2023-11-23 08:57:28,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:57:28,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:57:28,526 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:57:28,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1865744837] [2023-11-23 08:57:28,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:57:28,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:57:28,527 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:57:28,528 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 08:57:28,549 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 08:57:28,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:28,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 2409 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-23 08:57:28,908 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:57:28,996 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2023-11-23 08:57:28,997 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:57:28,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:57:28,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114284059] [2023-11-23 08:57:28,997 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:57:28,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1865744837] [2023-11-23 08:57:28,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1865744837] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:57:28,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:57:28,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 08:57:28,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980353564] [2023-11-23 08:57:28,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:57:28,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 08:57:28,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:57:28,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 08:57:28,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 08:57:29,000 INFO L87 Difference]: Start difference. First operand 148 states and 189 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2023-11-23 08:57:29,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:57:29,304 INFO L93 Difference]: Finished difference Result 240 states and 303 transitions. [2023-11-23 08:57:29,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 08:57:29,316 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 134 [2023-11-23 08:57:29,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:57:29,318 INFO L225 Difference]: With dead ends: 240 [2023-11-23 08:57:29,318 INFO L226 Difference]: Without dead ends: 148 [2023-11-23 08:57:29,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-23 08:57:29,320 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 48 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:57:29,321 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 741 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 08:57:29,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-11-23 08:57:29,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2023-11-23 08:57:29,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 94 states have (on average 1.2446808510638299) internal successors, (117), 97 states have internal predecessors, (117), 35 states have call successors, (35), 17 states have call predecessors, (35), 18 states have return successors, (36), 34 states have call predecessors, (36), 34 states have call successors, (36) [2023-11-23 08:57:29,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 188 transitions. [2023-11-23 08:57:29,338 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 188 transitions. Word has length 134 [2023-11-23 08:57:29,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:57:29,339 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 188 transitions. [2023-11-23 08:57:29,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 6 states have internal predecessors, (61), 4 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2023-11-23 08:57:29,340 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 188 transitions. [2023-11-23 08:57:29,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2023-11-23 08:57:29,341 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:57:29,342 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:57:29,373 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-23 08:57:29,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:57:29,557 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:57:29,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:57:29,558 INFO L85 PathProgramCache]: Analyzing trace with hash 1007593412, now seen corresponding path program 1 times [2023-11-23 08:57:29,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:57:29,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553968284] [2023-11-23 08:57:29,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:57:29,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:57:29,606 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:57:29,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1734070455] [2023-11-23 08:57:29,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:57:29,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:57:29,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:57:29,637 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 08:57:29,662 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 08:57:30,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:30,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 2481 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 08:57:30,099 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:57:30,190 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2023-11-23 08:57:30,191 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:57:30,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:57:30,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553968284] [2023-11-23 08:57:30,191 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:57:30,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1734070455] [2023-11-23 08:57:30,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1734070455] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:57:30,191 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:57:30,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 08:57:30,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28166316] [2023-11-23 08:57:30,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:57:30,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 08:57:30,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:57:30,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 08:57:30,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-23 08:57:30,195 INFO L87 Difference]: Start difference. First operand 148 states and 188 transitions. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 5 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2023-11-23 08:57:30,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:57:30,531 INFO L93 Difference]: Finished difference Result 253 states and 321 transitions. [2023-11-23 08:57:30,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 08:57:30,533 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 5 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 150 [2023-11-23 08:57:30,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:57:30,534 INFO L225 Difference]: With dead ends: 253 [2023-11-23 08:57:30,534 INFO L226 Difference]: Without dead ends: 148 [2023-11-23 08:57:30,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2023-11-23 08:57:30,535 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 99 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:57:30,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 981 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 08:57:30,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2023-11-23 08:57:30,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2023-11-23 08:57:30,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 94 states have (on average 1.2446808510638299) internal successors, (117), 97 states have internal predecessors, (117), 35 states have call successors, (35), 17 states have call predecessors, (35), 18 states have return successors, (35), 34 states have call predecessors, (35), 34 states have call successors, (35) [2023-11-23 08:57:30,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 187 transitions. [2023-11-23 08:57:30,547 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 187 transitions. Word has length 150 [2023-11-23 08:57:30,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:57:30,549 INFO L495 AbstractCegarLoop]: Abstraction has 148 states and 187 transitions. [2023-11-23 08:57:30,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 5 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2023-11-23 08:57:30,549 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 187 transitions. [2023-11-23 08:57:30,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-11-23 08:57:30,552 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:57:30,553 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 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 08:57:30,570 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 08:57:30,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:57:30,766 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:57:30,766 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:57:30,766 INFO L85 PathProgramCache]: Analyzing trace with hash -540158510, now seen corresponding path program 1 times [2023-11-23 08:57:30,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:57:30,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661379184] [2023-11-23 08:57:30,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:57:30,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:57:30,824 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:57:30,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [203875159] [2023-11-23 08:57:30,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:57:30,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:57:30,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:57:30,826 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 08:57:30,850 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 08:57:31,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:31,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 2620 conjuncts, 17 conjunts are in the unsatisfiable core [2023-11-23 08:57:31,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:57:31,320 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-11-23 08:57:31,321 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:57:31,518 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2023-11-23 08:57:31,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:57:31,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661379184] [2023-11-23 08:57:31,519 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:57:31,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203875159] [2023-11-23 08:57:31,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203875159] provided 1 perfect and 1 imperfect interpolant sequences [2023-11-23 08:57:31,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-23 08:57:31,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2023-11-23 08:57:31,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649536615] [2023-11-23 08:57:31,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:57:31,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 08:57:31,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:57:31,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 08:57:31,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-11-23 08:57:31,522 INFO L87 Difference]: Start difference. First operand 148 states and 187 transitions. Second operand has 6 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2023-11-23 08:57:31,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:57:31,868 INFO L93 Difference]: Finished difference Result 158 states and 201 transitions. [2023-11-23 08:57:31,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-23 08:57:31,869 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) Word has length 163 [2023-11-23 08:57:31,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:57:31,870 INFO L225 Difference]: With dead ends: 158 [2023-11-23 08:57:31,870 INFO L226 Difference]: Without dead ends: 156 [2023-11-23 08:57:31,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2023-11-23 08:57:31,871 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 6 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:57:31,871 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 835 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 08:57:31,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-11-23 08:57:31,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 155. [2023-11-23 08:57:31,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 98 states have (on average 1.2346938775510203) internal successors, (121), 102 states have internal predecessors, (121), 36 states have call successors, (36), 18 states have call predecessors, (36), 20 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2023-11-23 08:57:31,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 198 transitions. [2023-11-23 08:57:31,881 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 198 transitions. Word has length 163 [2023-11-23 08:57:31,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:57:31,883 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 198 transitions. [2023-11-23 08:57:31,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 1 states have call successors, (21) [2023-11-23 08:57:31,884 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 198 transitions. [2023-11-23 08:57:31,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2023-11-23 08:57:31,885 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:57:31,885 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 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 08:57:31,918 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 08:57:32,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:57:32,101 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:57:32,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:57:32,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1027903689, now seen corresponding path program 1 times [2023-11-23 08:57:32,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:57:32,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060149072] [2023-11-23 08:57:32,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:57:32,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:57:32,155 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:57:32,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1448741518] [2023-11-23 08:57:32,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:57:32,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:57:32,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:57:32,173 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 08:57:32,216 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 08:57:32,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:32,595 INFO L262 TraceCheckSpWp]: Trace formula consists of 2623 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-23 08:57:32,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:57:32,625 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-23 08:57:32,625 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:57:32,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:57:32,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060149072] [2023-11-23 08:57:32,625 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:57:32,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448741518] [2023-11-23 08:57:32,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448741518] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:57:32,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:57:32,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 08:57:32,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445952820] [2023-11-23 08:57:32,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:57:32,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 08:57:32,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:57:32,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 08:57:32,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 08:57:32,627 INFO L87 Difference]: Start difference. First operand 155 states and 198 transitions. Second operand has 6 states, 5 states have (on average 15.0) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-23 08:57:32,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:57:32,811 INFO L93 Difference]: Finished difference Result 252 states and 320 transitions. [2023-11-23 08:57:32,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 08:57:32,811 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.0) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 163 [2023-11-23 08:57:32,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:57:32,812 INFO L225 Difference]: With dead ends: 252 [2023-11-23 08:57:32,812 INFO L226 Difference]: Without dead ends: 155 [2023-11-23 08:57:32,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-23 08:57:32,813 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 9 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:57:32,813 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 819 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 08:57:32,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2023-11-23 08:57:32,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2023-11-23 08:57:32,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 98 states have (on average 1.2244897959183674) internal successors, (120), 102 states have internal predecessors, (120), 36 states have call successors, (36), 18 states have call predecessors, (36), 20 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2023-11-23 08:57:32,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 197 transitions. [2023-11-23 08:57:32,822 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 197 transitions. Word has length 163 [2023-11-23 08:57:32,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:57:32,822 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 197 transitions. [2023-11-23 08:57:32,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 15.0) internal successors, (75), 6 states have internal predecessors, (75), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-23 08:57:32,822 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 197 transitions. [2023-11-23 08:57:32,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2023-11-23 08:57:32,824 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:57:32,824 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 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 08:57:32,854 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-23 08:57:33,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:57:33,041 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:57:33,041 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:57:33,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1551700959, now seen corresponding path program 1 times [2023-11-23 08:57:33,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:57:33,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507319975] [2023-11-23 08:57:33,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:57:33,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:57:33,097 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:57:33,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [117800894] [2023-11-23 08:57:33,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:57:33,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:57:33,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:57:33,101 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 08:57:33,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-23 08:57:33,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:33,561 INFO L262 TraceCheckSpWp]: Trace formula consists of 2631 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-23 08:57:33,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:57:33,609 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2023-11-23 08:57:33,610 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:57:33,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:57:33,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507319975] [2023-11-23 08:57:33,610 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:57:33,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [117800894] [2023-11-23 08:57:33,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [117800894] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:57:33,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:57:33,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 08:57:33,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893252151] [2023-11-23 08:57:33,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:57:33,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 08:57:33,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:57:33,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 08:57:33,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-23 08:57:33,612 INFO L87 Difference]: Start difference. First operand 155 states and 197 transitions. Second operand has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 7 states have internal predecessors, (77), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-23 08:57:34,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:57:34,000 INFO L93 Difference]: Finished difference Result 254 states and 321 transitions. [2023-11-23 08:57:34,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 08:57:34,001 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 7 states have internal predecessors, (77), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) Word has length 165 [2023-11-23 08:57:34,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:57:34,002 INFO L225 Difference]: With dead ends: 254 [2023-11-23 08:57:34,002 INFO L226 Difference]: Without dead ends: 156 [2023-11-23 08:57:34,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2023-11-23 08:57:34,003 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 10 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 981 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:57:34,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 981 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 08:57:34,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-11-23 08:57:34,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2023-11-23 08:57:34,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 99 states have (on average 1.2222222222222223) internal successors, (121), 103 states have internal predecessors, (121), 36 states have call successors, (36), 18 states have call predecessors, (36), 20 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2023-11-23 08:57:34,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 198 transitions. [2023-11-23 08:57:34,009 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 198 transitions. Word has length 165 [2023-11-23 08:57:34,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:57:34,010 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 198 transitions. [2023-11-23 08:57:34,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 7 states have internal predecessors, (77), 4 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (21), 4 states have call predecessors, (21), 4 states have call successors, (21) [2023-11-23 08:57:34,010 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 198 transitions. [2023-11-23 08:57:34,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-11-23 08:57:34,011 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:57:34,011 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 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 08:57:34,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-23 08:57:34,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:57:34,227 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:57:34,228 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:57:34,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1993499569, now seen corresponding path program 1 times [2023-11-23 08:57:34,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:57:34,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940567694] [2023-11-23 08:57:34,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:57:34,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:57:34,275 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:57:34,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [428153137] [2023-11-23 08:57:34,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:57:34,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:57:34,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:57:34,305 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:57:34,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-23 08:57:34,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:34,739 INFO L262 TraceCheckSpWp]: Trace formula consists of 2650 conjuncts, 18 conjunts are in the unsatisfiable core [2023-11-23 08:57:34,743 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:57:34,771 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2023-11-23 08:57:34,771 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:57:34,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:57:34,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940567694] [2023-11-23 08:57:34,772 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:57:34,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [428153137] [2023-11-23 08:57:34,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [428153137] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:57:34,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:57:34,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 08:57:34,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168799987] [2023-11-23 08:57:34,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:57:34,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 08:57:34,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:57:34,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 08:57:34,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 08:57:34,774 INFO L87 Difference]: Start difference. First operand 156 states and 198 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 08:57:35,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:57:35,023 INFO L93 Difference]: Finished difference Result 265 states and 343 transitions. [2023-11-23 08:57:35,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 08:57:35,023 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 166 [2023-11-23 08:57:35,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:57:35,024 INFO L225 Difference]: With dead ends: 265 [2023-11-23 08:57:35,025 INFO L226 Difference]: Without dead ends: 160 [2023-11-23 08:57:35,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:57:35,025 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 6 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:57:35,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 478 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 08:57:35,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2023-11-23 08:57:35,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 157. [2023-11-23 08:57:35,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 100 states have (on average 1.22) internal successors, (122), 104 states have internal predecessors, (122), 36 states have call successors, (36), 18 states have call predecessors, (36), 20 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2023-11-23 08:57:35,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 199 transitions. [2023-11-23 08:57:35,036 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 199 transitions. Word has length 166 [2023-11-23 08:57:35,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:57:35,038 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 199 transitions. [2023-11-23 08:57:35,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 08:57:35,038 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 199 transitions. [2023-11-23 08:57:35,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-11-23 08:57:35,039 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:57:35,039 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 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 08:57:35,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-23 08:57:35,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:57:35,256 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:57:35,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:57:35,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1635818991, now seen corresponding path program 1 times [2023-11-23 08:57:35,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:57:35,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038017427] [2023-11-23 08:57:35,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:57:35,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:57:35,326 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:57:35,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1348916406] [2023-11-23 08:57:35,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:57:35,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:57:35,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:57:35,328 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:57:35,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-23 08:57:35,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:35,832 INFO L262 TraceCheckSpWp]: Trace formula consists of 2656 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 08:57:35,836 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:57:35,914 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-23 08:57:35,914 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:57:35,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:57:35,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038017427] [2023-11-23 08:57:35,914 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:57:35,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348916406] [2023-11-23 08:57:35,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348916406] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:57:35,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:57:35,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 08:57:35,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537909451] [2023-11-23 08:57:35,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:57:35,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 08:57:35,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:57:35,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 08:57:35,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 08:57:35,918 INFO L87 Difference]: Start difference. First operand 157 states and 199 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 08:57:36,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:57:36,385 INFO L93 Difference]: Finished difference Result 281 states and 358 transitions. [2023-11-23 08:57:36,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 08:57:36,386 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 166 [2023-11-23 08:57:36,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:57:36,387 INFO L225 Difference]: With dead ends: 281 [2023-11-23 08:57:36,387 INFO L226 Difference]: Without dead ends: 173 [2023-11-23 08:57:36,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-11-23 08:57:36,388 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 21 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-23 08:57:36,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 759 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-23 08:57:36,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2023-11-23 08:57:36,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 161. [2023-11-23 08:57:36,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 104 states have (on average 1.2211538461538463) internal successors, (127), 108 states have internal predecessors, (127), 36 states have call successors, (36), 18 states have call predecessors, (36), 20 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2023-11-23 08:57:36,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 204 transitions. [2023-11-23 08:57:36,395 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 204 transitions. Word has length 166 [2023-11-23 08:57:36,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:57:36,395 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 204 transitions. [2023-11-23 08:57:36,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 08:57:36,396 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 204 transitions. [2023-11-23 08:57:36,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-11-23 08:57:36,397 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:57:36,397 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 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 08:57:36,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-23 08:57:36,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:57:36,615 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:57:36,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:57:36,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1558918193, now seen corresponding path program 1 times [2023-11-23 08:57:36,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:57:36,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986682063] [2023-11-23 08:57:36,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:57:36,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:57:36,662 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:57:36,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1692855551] [2023-11-23 08:57:36,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:57:36,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:57:36,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:57:36,677 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:57:36,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-23 08:57:37,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:37,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 2653 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 08:57:37,140 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:57:37,157 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-11-23 08:57:37,157 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:57:37,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:57:37,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986682063] [2023-11-23 08:57:37,157 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:57:37,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692855551] [2023-11-23 08:57:37,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692855551] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:57:37,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:57:37,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 08:57:37,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590517639] [2023-11-23 08:57:37,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:57:37,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 08:57:37,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:57:37,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 08:57:37,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 08:57:37,160 INFO L87 Difference]: Start difference. First operand 161 states and 204 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 08:57:37,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:57:37,273 INFO L93 Difference]: Finished difference Result 271 states and 342 transitions. [2023-11-23 08:57:37,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:57:37,274 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 166 [2023-11-23 08:57:37,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:57:37,275 INFO L225 Difference]: With dead ends: 271 [2023-11-23 08:57:37,275 INFO L226 Difference]: Without dead ends: 165 [2023-11-23 08:57:37,276 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:57:37,276 INFO L413 NwaCegarLoop]: 167 mSDtfsCounter, 3 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:57:37,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 494 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 08:57:37,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2023-11-23 08:57:37,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 163. [2023-11-23 08:57:37,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 106 states have (on average 1.2169811320754718) internal successors, (129), 110 states have internal predecessors, (129), 36 states have call successors, (36), 18 states have call predecessors, (36), 20 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2023-11-23 08:57:37,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 206 transitions. [2023-11-23 08:57:37,287 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 206 transitions. Word has length 166 [2023-11-23 08:57:37,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:57:37,287 INFO L495 AbstractCegarLoop]: Abstraction has 163 states and 206 transitions. [2023-11-23 08:57:37,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 08:57:37,287 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 206 transitions. [2023-11-23 08:57:37,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-11-23 08:57:37,289 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:57:37,289 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 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 08:57:37,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-23 08:57:37,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-23 08:57:37,520 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:57:37,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:57:37,520 INFO L85 PathProgramCache]: Analyzing trace with hash 349539597, now seen corresponding path program 1 times [2023-11-23 08:57:37,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:57:37,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469169452] [2023-11-23 08:57:37,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:57:37,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:57:37,572 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:57:37,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [614079167] [2023-11-23 08:57:37,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:57:37,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:57:37,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:57:37,589 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:57:37,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-23 08:57:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:38,066 INFO L262 TraceCheckSpWp]: Trace formula consists of 2648 conjuncts, 29 conjunts are in the unsatisfiable core [2023-11-23 08:57:38,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:57:38,184 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2023-11-23 08:57:38,199 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2023-11-23 08:57:38,199 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:57:38,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:57:38,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469169452] [2023-11-23 08:57:38,200 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:57:38,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614079167] [2023-11-23 08:57:38,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614079167] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:57:38,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:57:38,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-23 08:57:38,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426410562] [2023-11-23 08:57:38,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:57:38,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-23 08:57:38,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:57:38,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-23 08:57:38,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2023-11-23 08:57:38,202 INFO L87 Difference]: Start difference. First operand 163 states and 206 transitions. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 5 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2023-11-23 08:57:38,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:57:38,977 INFO L93 Difference]: Finished difference Result 303 states and 387 transitions. [2023-11-23 08:57:38,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-23 08:57:38,978 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 5 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) Word has length 166 [2023-11-23 08:57:38,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:57:38,980 INFO L225 Difference]: With dead ends: 303 [2023-11-23 08:57:38,981 INFO L226 Difference]: Without dead ends: 189 [2023-11-23 08:57:38,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2023-11-23 08:57:38,985 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 105 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 1272 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-23 08:57:38,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 1272 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 380 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-23 08:57:38,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-11-23 08:57:38,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 172. [2023-11-23 08:57:38,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 114 states have (on average 1.219298245614035) internal successors, (139), 118 states have internal predecessors, (139), 36 states have call successors, (36), 18 states have call predecessors, (36), 21 states have return successors, (44), 36 states have call predecessors, (44), 35 states have call successors, (44) [2023-11-23 08:57:38,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 219 transitions. [2023-11-23 08:57:38,995 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 219 transitions. Word has length 166 [2023-11-23 08:57:38,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:57:38,995 INFO L495 AbstractCegarLoop]: Abstraction has 172 states and 219 transitions. [2023-11-23 08:57:38,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 10 states have internal predecessors, (83), 5 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2023-11-23 08:57:38,996 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 219 transitions. [2023-11-23 08:57:38,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2023-11-23 08:57:38,998 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:57:38,998 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 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 08:57:39,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-23 08:57:39,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:57:39,216 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:57:39,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:57:39,217 INFO L85 PathProgramCache]: Analyzing trace with hash -748596145, now seen corresponding path program 1 times [2023-11-23 08:57:39,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:57:39,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095138898] [2023-11-23 08:57:39,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:57:39,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:57:39,283 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:57:39,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1869232966] [2023-11-23 08:57:39,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:57:39,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:57:39,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:57:39,302 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:57:39,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-23 08:57:39,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:39,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 2651 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-23 08:57:39,874 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:57:39,888 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2023-11-23 08:57:39,888 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:57:39,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:57:39,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095138898] [2023-11-23 08:57:39,888 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:57:39,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1869232966] [2023-11-23 08:57:39,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1869232966] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:57:39,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:57:39,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 08:57:39,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349161673] [2023-11-23 08:57:39,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:57:39,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:57:39,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:57:39,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:57:39,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:57:39,890 INFO L87 Difference]: Start difference. First operand 172 states and 219 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 08:57:40,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:57:40,167 INFO L93 Difference]: Finished difference Result 280 states and 358 transitions. [2023-11-23 08:57:40,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 08:57:40,169 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 166 [2023-11-23 08:57:40,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:57:40,170 INFO L225 Difference]: With dead ends: 280 [2023-11-23 08:57:40,170 INFO L226 Difference]: Without dead ends: 178 [2023-11-23 08:57:40,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 08:57:40,171 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 4 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:57:40,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 675 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 08:57:40,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2023-11-23 08:57:40,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 174. [2023-11-23 08:57:40,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 116 states have (on average 1.2155172413793103) internal successors, (141), 119 states have internal predecessors, (141), 36 states have call successors, (36), 18 states have call predecessors, (36), 21 states have return successors, (44), 37 states have call predecessors, (44), 35 states have call successors, (44) [2023-11-23 08:57:40,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 221 transitions. [2023-11-23 08:57:40,178 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 221 transitions. Word has length 166 [2023-11-23 08:57:40,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:57:40,178 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 221 transitions. [2023-11-23 08:57:40,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 08:57:40,178 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 221 transitions. [2023-11-23 08:57:40,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2023-11-23 08:57:40,179 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:57:40,181 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:57:40,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-23 08:57:40,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-23 08:57:40,398 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:57:40,398 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:57:40,398 INFO L85 PathProgramCache]: Analyzing trace with hash -1846810198, now seen corresponding path program 1 times [2023-11-23 08:57:40,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:57:40,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995161844] [2023-11-23 08:57:40,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:57:40,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:57:40,446 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:57:40,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1039078904] [2023-11-23 08:57:40,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:57:40,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:57:40,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:57:40,448 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:57:40,478 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-23 08:57:40,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:40,943 INFO L262 TraceCheckSpWp]: Trace formula consists of 2655 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 08:57:40,947 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:57:40,963 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2023-11-23 08:57:40,963 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:57:40,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:57:40,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995161844] [2023-11-23 08:57:40,963 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:57:40,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039078904] [2023-11-23 08:57:40,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039078904] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:57:40,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:57:40,963 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 08:57:40,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25202975] [2023-11-23 08:57:40,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:57:40,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 08:57:40,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:57:40,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 08:57:40,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 08:57:40,964 INFO L87 Difference]: Start difference. First operand 174 states and 221 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 08:57:41,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:57:41,118 INFO L93 Difference]: Finished difference Result 201 states and 253 transitions. [2023-11-23 08:57:41,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 08:57:41,118 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 168 [2023-11-23 08:57:41,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:57:41,119 INFO L225 Difference]: With dead ends: 201 [2023-11-23 08:57:41,119 INFO L226 Difference]: Without dead ends: 175 [2023-11-23 08:57:41,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 08:57:41,120 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 0 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 08:57:41,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 502 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 08:57:41,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2023-11-23 08:57:41,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2023-11-23 08:57:41,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 117 states have (on average 1.2136752136752136) internal successors, (142), 119 states have internal predecessors, (142), 36 states have call successors, (36), 18 states have call predecessors, (36), 21 states have return successors, (44), 38 states have call predecessors, (44), 35 states have call successors, (44) [2023-11-23 08:57:41,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 222 transitions. [2023-11-23 08:57:41,127 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 222 transitions. Word has length 168 [2023-11-23 08:57:41,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:57:41,127 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 222 transitions. [2023-11-23 08:57:41,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 08:57:41,128 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 222 transitions. [2023-11-23 08:57:41,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2023-11-23 08:57:41,129 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:57:41,129 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 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 08:57:41,148 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-11-23 08:57:41,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-23 08:57:41,349 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:57:41,349 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:57:41,349 INFO L85 PathProgramCache]: Analyzing trace with hash -321164049, now seen corresponding path program 2 times [2023-11-23 08:57:41,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:57:41,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146494392] [2023-11-23 08:57:41,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:57:41,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:57:41,389 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:57:41,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1644304963] [2023-11-23 08:57:41,389 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:57:41,389 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:57:41,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:57:41,390 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:57:41,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-11-23 08:57:41,990 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 08:57:41,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:57:42,000 INFO L262 TraceCheckSpWp]: Trace formula consists of 2659 conjuncts, 14 conjunts are in the unsatisfiable core [2023-11-23 08:57:42,003 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:57:42,061 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-11-23 08:57:42,062 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:57:42,313 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-11-23 08:57:42,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:57:42,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146494392] [2023-11-23 08:57:42,314 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:57:42,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644304963] [2023-11-23 08:57:42,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644304963] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:57:42,314 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:57:42,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2023-11-23 08:57:42,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773345463] [2023-11-23 08:57:42,315 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:57:42,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-23 08:57:42,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:57:42,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-23 08:57:42,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2023-11-23 08:57:42,317 INFO L87 Difference]: Start difference. First operand 175 states and 222 transitions. Second operand has 13 states, 11 states have (on average 8.0) internal successors, (88), 13 states have internal predecessors, (88), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2023-11-23 08:57:42,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:57:42,802 INFO L93 Difference]: Finished difference Result 286 states and 360 transitions. [2023-11-23 08:57:42,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-23 08:57:42,802 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 8.0) internal successors, (88), 13 states have internal predecessors, (88), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) Word has length 170 [2023-11-23 08:57:42,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:57:42,803 INFO L225 Difference]: With dead ends: 286 [2023-11-23 08:57:42,803 INFO L226 Difference]: Without dead ends: 176 [2023-11-23 08:57:42,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2023-11-23 08:57:42,804 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 16 mSDsluCounter, 978 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-23 08:57:42,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1144 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-23 08:57:42,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2023-11-23 08:57:42,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2023-11-23 08:57:42,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 118 states have (on average 1.2118644067796611) internal successors, (143), 120 states have internal predecessors, (143), 36 states have call successors, (36), 18 states have call predecessors, (36), 21 states have return successors, (44), 38 states have call predecessors, (44), 35 states have call successors, (44) [2023-11-23 08:57:42,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 223 transitions. [2023-11-23 08:57:42,811 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 223 transitions. Word has length 170 [2023-11-23 08:57:42,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:57:42,811 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 223 transitions. [2023-11-23 08:57:42,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 8.0) internal successors, (88), 13 states have internal predecessors, (88), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2023-11-23 08:57:42,824 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 223 transitions. [2023-11-23 08:57:42,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-11-23 08:57:42,825 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:57:42,825 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 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 08:57:42,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-11-23 08:57:43,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-23 08:57:43,045 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:57:43,045 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:57:43,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1460324507, now seen corresponding path program 3 times [2023-11-23 08:57:43,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:57:43,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126973909] [2023-11-23 08:57:43,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:57:43,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:57:43,098 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:57:43,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1594440532] [2023-11-23 08:57:43,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 08:57:43,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:57:43,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:57:43,100 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:57:43,101 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-11-23 08:57:43,489 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-11-23 08:57:43,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:57:43,497 INFO L262 TraceCheckSpWp]: Trace formula consists of 1992 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-23 08:57:43,500 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:57:43,553 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2023-11-23 08:57:43,554 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:57:43,813 INFO L134 CoverageAnalysis]: Checked inductivity of 116 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2023-11-23 08:57:43,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:57:43,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126973909] [2023-11-23 08:57:43,814 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:57:43,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594440532] [2023-11-23 08:57:43,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594440532] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:57:43,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:57:43,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2023-11-23 08:57:43,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84162929] [2023-11-23 08:57:43,815 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:57:43,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-11-23 08:57:43,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:57:43,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-11-23 08:57:43,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2023-11-23 08:57:43,816 INFO L87 Difference]: Start difference. First operand 176 states and 223 transitions. Second operand has 15 states, 13 states have (on average 6.923076923076923) internal successors, (90), 15 states have internal predecessors, (90), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2023-11-23 08:57:44,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:57:44,657 INFO L93 Difference]: Finished difference Result 288 states and 362 transitions. [2023-11-23 08:57:44,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-23 08:57:44,658 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 6.923076923076923) internal successors, (90), 15 states have internal predecessors, (90), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) Word has length 171 [2023-11-23 08:57:44,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:57:44,661 INFO L225 Difference]: With dead ends: 288 [2023-11-23 08:57:44,661 INFO L226 Difference]: Without dead ends: 177 [2023-11-23 08:57:44,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 327 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=296, Unknown=0, NotChecked=0, Total=380 [2023-11-23 08:57:44,662 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 16 mSDsluCounter, 1140 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 08:57:44,663 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1306 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 08:57:44,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2023-11-23 08:57:44,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2023-11-23 08:57:44,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 119 states have (on average 1.2100840336134453) internal successors, (144), 121 states have internal predecessors, (144), 36 states have call successors, (36), 18 states have call predecessors, (36), 21 states have return successors, (44), 38 states have call predecessors, (44), 35 states have call successors, (44) [2023-11-23 08:57:44,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 224 transitions. [2023-11-23 08:57:44,674 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 224 transitions. Word has length 171 [2023-11-23 08:57:44,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:57:44,674 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 224 transitions. [2023-11-23 08:57:44,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 6.923076923076923) internal successors, (90), 15 states have internal predecessors, (90), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2023-11-23 08:57:44,675 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 224 transitions. [2023-11-23 08:57:44,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2023-11-23 08:57:44,704 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:57:44,705 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 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 08:57:44,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-11-23 08:57:44,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-11-23 08:57:44,920 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:57:44,921 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:57:44,921 INFO L85 PathProgramCache]: Analyzing trace with hash 851894895, now seen corresponding path program 4 times [2023-11-23 08:57:44,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:57:44,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732457659] [2023-11-23 08:57:44,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:57:44,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:57:44,990 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:57:44,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1622315873] [2023-11-23 08:57:44,990 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-23 08:57:44,990 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:57:44,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:57:45,008 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:57:45,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-11-23 08:57:45,506 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-23 08:57:45,506 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:57:45,516 INFO L262 TraceCheckSpWp]: Trace formula consists of 2697 conjuncts, 22 conjunts are in the unsatisfiable core [2023-11-23 08:57:45,520 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:57:45,562 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2023-11-23 08:57:45,563 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:57:45,782 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2023-11-23 08:57:45,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:57:45,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732457659] [2023-11-23 08:57:45,783 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:57:45,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622315873] [2023-11-23 08:57:45,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622315873] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:57:45,783 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:57:45,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2023-11-23 08:57:45,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787490314] [2023-11-23 08:57:45,784 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:57:45,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 08:57:45,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:57:45,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 08:57:45,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-23 08:57:45,786 INFO L87 Difference]: Start difference. First operand 177 states and 224 transitions. Second operand has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 2 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-11-23 08:57:46,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:57:46,129 INFO L93 Difference]: Finished difference Result 310 states and 411 transitions. [2023-11-23 08:57:46,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 08:57:46,130 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 2 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 172 [2023-11-23 08:57:46,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:57:46,131 INFO L225 Difference]: With dead ends: 310 [2023-11-23 08:57:46,131 INFO L226 Difference]: Without dead ends: 189 [2023-11-23 08:57:46,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 336 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2023-11-23 08:57:46,132 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 19 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-23 08:57:46,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 959 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-23 08:57:46,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-11-23 08:57:46,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 183. [2023-11-23 08:57:46,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 125 states have (on average 1.224) internal successors, (153), 127 states have internal predecessors, (153), 36 states have call successors, (36), 18 states have call predecessors, (36), 21 states have return successors, (44), 38 states have call predecessors, (44), 35 states have call successors, (44) [2023-11-23 08:57:46,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 233 transitions. [2023-11-23 08:57:46,138 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 233 transitions. Word has length 172 [2023-11-23 08:57:46,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:57:46,139 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 233 transitions. [2023-11-23 08:57:46,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.125) internal successors, (105), 8 states have internal predecessors, (105), 2 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2023-11-23 08:57:46,139 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 233 transitions. [2023-11-23 08:57:46,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2023-11-23 08:57:46,140 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:57:46,140 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:57:46,159 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2023-11-23 08:57:46,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:57:46,341 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:57:46,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:57:46,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1577310182, now seen corresponding path program 1 times [2023-11-23 08:57:46,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:57:46,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502579321] [2023-11-23 08:57:46,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:57:46,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:57:46,386 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:57:46,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1560093293] [2023-11-23 08:57:46,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:57:46,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:57:46,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:57:46,409 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:57:46,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-11-23 08:57:46,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:46,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 2748 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-23 08:57:46,961 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:57:47,031 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2023-11-23 08:57:47,032 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:57:47,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:57:47,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502579321] [2023-11-23 08:57:47,032 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:57:47,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560093293] [2023-11-23 08:57:47,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560093293] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:57:47,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:57:47,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 08:57:47,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111529571] [2023-11-23 08:57:47,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:57:47,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 08:57:47,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:57:47,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 08:57:47,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-23 08:57:47,035 INFO L87 Difference]: Start difference. First operand 183 states and 233 transitions. Second operand has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 8 states have internal predecessors, (83), 6 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 5 states have call predecessors, (22), 6 states have call successors, (22) [2023-11-23 08:57:47,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:57:47,309 INFO L93 Difference]: Finished difference Result 308 states and 391 transitions. [2023-11-23 08:57:47,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 08:57:47,310 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 8 states have internal predecessors, (83), 6 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 5 states have call predecessors, (22), 6 states have call successors, (22) Word has length 182 [2023-11-23 08:57:47,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:57:47,311 INFO L225 Difference]: With dead ends: 308 [2023-11-23 08:57:47,311 INFO L226 Difference]: Without dead ends: 181 [2023-11-23 08:57:47,312 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2023-11-23 08:57:47,312 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 45 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:57:47,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 1011 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 08:57:47,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2023-11-23 08:57:47,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2023-11-23 08:57:47,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 124 states have (on average 1.217741935483871) internal successors, (151), 125 states have internal predecessors, (151), 36 states have call successors, (36), 18 states have call predecessors, (36), 20 states have return successors, (43), 38 states have call predecessors, (43), 35 states have call successors, (43) [2023-11-23 08:57:47,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 230 transitions. [2023-11-23 08:57:47,321 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 230 transitions. Word has length 182 [2023-11-23 08:57:47,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:57:47,321 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 230 transitions. [2023-11-23 08:57:47,322 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.857142857142858) internal successors, (83), 8 states have internal predecessors, (83), 6 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (22), 5 states have call predecessors, (22), 6 states have call successors, (22) [2023-11-23 08:57:47,322 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 230 transitions. [2023-11-23 08:57:47,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-11-23 08:57:47,323 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:57:47,323 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 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 08:57:47,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-11-23 08:57:47,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-23 08:57:47,540 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:57:47,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:57:47,540 INFO L85 PathProgramCache]: Analyzing trace with hash -642426769, now seen corresponding path program 5 times [2023-11-23 08:57:47,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:57:47,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477983346] [2023-11-23 08:57:47,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:57:47,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:57:47,594 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:57:47,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [508480463] [2023-11-23 08:57:47,594 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-23 08:57:47,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:57:47,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:57:47,624 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:57:47,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-11-23 08:57:47,976 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-11-23 08:57:47,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:57:47,980 INFO L262 TraceCheckSpWp]: Trace formula consists of 654 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-23 08:57:47,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:57:48,000 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2023-11-23 08:57:48,001 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:57:48,001 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:57:48,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477983346] [2023-11-23 08:57:48,001 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:57:48,001 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [508480463] [2023-11-23 08:57:48,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [508480463] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:57:48,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:57:48,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 08:57:48,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568650273] [2023-11-23 08:57:48,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:57:48,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 08:57:48,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:57:48,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 08:57:48,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:57:48,004 INFO L87 Difference]: Start difference. First operand 181 states and 230 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 08:57:48,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:57:48,270 INFO L93 Difference]: Finished difference Result 307 states and 387 transitions. [2023-11-23 08:57:48,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-23 08:57:48,270 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 184 [2023-11-23 08:57:48,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:57:48,271 INFO L225 Difference]: With dead ends: 307 [2023-11-23 08:57:48,271 INFO L226 Difference]: Without dead ends: 189 [2023-11-23 08:57:48,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-23 08:57:48,272 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 7 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:57:48,272 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 650 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 08:57:48,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2023-11-23 08:57:48,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 185. [2023-11-23 08:57:48,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 128 states have (on average 1.2109375) internal successors, (155), 129 states have internal predecessors, (155), 36 states have call successors, (36), 18 states have call predecessors, (36), 20 states have return successors, (43), 38 states have call predecessors, (43), 35 states have call successors, (43) [2023-11-23 08:57:48,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 234 transitions. [2023-11-23 08:57:48,278 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 234 transitions. Word has length 184 [2023-11-23 08:57:48,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:57:48,279 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 234 transitions. [2023-11-23 08:57:48,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 08:57:48,279 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 234 transitions. [2023-11-23 08:57:48,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2023-11-23 08:57:48,280 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:57:48,280 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 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 08:57:48,310 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-11-23 08:57:48,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:57:48,495 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:57:48,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:57:48,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1038699345, now seen corresponding path program 1 times [2023-11-23 08:57:48,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:57:48,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970231464] [2023-11-23 08:57:48,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:57:48,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:57:48,538 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:57:48,539 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1879712109] [2023-11-23 08:57:48,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:57:48,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:57:48,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:57:48,540 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:57:48,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-11-23 08:57:49,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:49,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 2731 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-23 08:57:49,033 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:57:49,044 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2023-11-23 08:57:49,045 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-23 08:57:49,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:57:49,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970231464] [2023-11-23 08:57:49,045 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:57:49,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879712109] [2023-11-23 08:57:49,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879712109] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 08:57:49,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 08:57:49,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 08:57:49,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974054668] [2023-11-23 08:57:49,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 08:57:49,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 08:57:49,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:57:49,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 08:57:49,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 08:57:49,047 INFO L87 Difference]: Start difference. First operand 185 states and 234 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 08:57:49,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:57:49,225 INFO L93 Difference]: Finished difference Result 330 states and 422 transitions. [2023-11-23 08:57:49,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 08:57:49,226 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 184 [2023-11-23 08:57:49,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:57:49,227 INFO L225 Difference]: With dead ends: 330 [2023-11-23 08:57:49,227 INFO L226 Difference]: Without dead ends: 185 [2023-11-23 08:57:49,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 08:57:49,227 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 7 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 08:57:49,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 499 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 08:57:49,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2023-11-23 08:57:49,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2023-11-23 08:57:49,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 128 states have (on average 1.203125) internal successors, (154), 129 states have internal predecessors, (154), 36 states have call successors, (36), 18 states have call predecessors, (36), 20 states have return successors, (43), 38 states have call predecessors, (43), 35 states have call successors, (43) [2023-11-23 08:57:49,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 233 transitions. [2023-11-23 08:57:49,235 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 233 transitions. Word has length 184 [2023-11-23 08:57:49,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:57:49,235 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 233 transitions. [2023-11-23 08:57:49,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2023-11-23 08:57:49,235 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 233 transitions. [2023-11-23 08:57:49,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2023-11-23 08:57:49,236 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:57:49,237 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:57:49,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-11-23 08:57:49,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:57:49,458 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:57:49,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:57:49,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1004446573, now seen corresponding path program 1 times [2023-11-23 08:57:49,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:57:49,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873507470] [2023-11-23 08:57:49,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:57:49,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:57:49,522 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:57:49,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [222899117] [2023-11-23 08:57:49,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:57:49,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:57:49,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:57:49,536 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:57:49,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-11-23 08:57:50,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 08:57:50,046 INFO L262 TraceCheckSpWp]: Trace formula consists of 2741 conjuncts, 30 conjunts are in the unsatisfiable core [2023-11-23 08:57:50,050 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:57:50,195 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 57 proven. 22 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2023-11-23 08:57:50,195 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:57:50,507 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2023-11-23 08:57:50,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:57:50,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873507470] [2023-11-23 08:57:50,508 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:57:50,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222899117] [2023-11-23 08:57:50,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222899117] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:57:50,508 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:57:50,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10] total 22 [2023-11-23 08:57:50,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477805410] [2023-11-23 08:57:50,508 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:57:50,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-11-23 08:57:50,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:57:50,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-11-23 08:57:50,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2023-11-23 08:57:50,510 INFO L87 Difference]: Start difference. First operand 185 states and 233 transitions. Second operand has 22 states, 20 states have (on average 5.4) internal successors, (108), 22 states have internal predecessors, (108), 6 states have call successors, (26), 2 states have call predecessors, (26), 6 states have return successors, (27), 6 states have call predecessors, (27), 6 states have call successors, (27) [2023-11-23 08:57:51,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:57:51,382 INFO L93 Difference]: Finished difference Result 311 states and 404 transitions. [2023-11-23 08:57:51,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-23 08:57:51,383 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 20 states have (on average 5.4) internal successors, (108), 22 states have internal predecessors, (108), 6 states have call successors, (26), 2 states have call predecessors, (26), 6 states have return successors, (27), 6 states have call predecessors, (27), 6 states have call successors, (27) Word has length 186 [2023-11-23 08:57:51,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:57:51,384 INFO L225 Difference]: With dead ends: 311 [2023-11-23 08:57:51,384 INFO L226 Difference]: Without dead ends: 195 [2023-11-23 08:57:51,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 349 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=701, Unknown=0, NotChecked=0, Total=812 [2023-11-23 08:57:51,386 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 35 mSDsluCounter, 1897 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 2061 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-23 08:57:51,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 2061 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-23 08:57:51,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2023-11-23 08:57:51,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 186. [2023-11-23 08:57:51,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 129 states have (on average 1.2015503875968991) internal successors, (155), 130 states have internal predecessors, (155), 36 states have call successors, (36), 18 states have call predecessors, (36), 20 states have return successors, (43), 38 states have call predecessors, (43), 35 states have call successors, (43) [2023-11-23 08:57:51,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 234 transitions. [2023-11-23 08:57:51,397 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 234 transitions. Word has length 186 [2023-11-23 08:57:51,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:57:51,397 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 234 transitions. [2023-11-23 08:57:51,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 20 states have (on average 5.4) internal successors, (108), 22 states have internal predecessors, (108), 6 states have call successors, (26), 2 states have call predecessors, (26), 6 states have return successors, (27), 6 states have call predecessors, (27), 6 states have call successors, (27) [2023-11-23 08:57:51,398 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 234 transitions. [2023-11-23 08:57:51,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2023-11-23 08:57:51,401 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:57:51,401 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 6, 6, 6, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:57:51,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2023-11-23 08:57:51,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:57:51,619 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:57:51,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:57:51,620 INFO L85 PathProgramCache]: Analyzing trace with hash -1320125089, now seen corresponding path program 2 times [2023-11-23 08:57:51,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:57:51,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534519912] [2023-11-23 08:57:51,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:57:51,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:57:51,669 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:57:51,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [611234849] [2023-11-23 08:57:51,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-23 08:57:51,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:57:51,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:57:51,671 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:57:51,677 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-11-23 08:57:52,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-23 08:57:52,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:57:52,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 2760 conjuncts, 20 conjunts are in the unsatisfiable core [2023-11-23 08:57:52,842 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:57:53,003 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 57 proven. 10 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2023-11-23 08:57:53,003 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:57:53,323 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2023-11-23 08:57:53,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-23 08:57:53,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534519912] [2023-11-23 08:57:53,324 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-11-23 08:57:53,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611234849] [2023-11-23 08:57:53,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611234849] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-23 08:57:53,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-11-23 08:57:53,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2023-11-23 08:57:53,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270807953] [2023-11-23 08:57:53,325 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-11-23 08:57:53,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-23 08:57:53,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-23 08:57:53,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-23 08:57:53,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2023-11-23 08:57:53,326 INFO L87 Difference]: Start difference. First operand 186 states and 234 transitions. Second operand has 19 states, 17 states have (on average 5.764705882352941) internal successors, (98), 19 states have internal predecessors, (98), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2023-11-23 08:57:54,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 08:57:54,293 INFO L93 Difference]: Finished difference Result 304 states and 380 transitions. [2023-11-23 08:57:54,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 08:57:54,295 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 5.764705882352941) internal successors, (98), 19 states have internal predecessors, (98), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) Word has length 187 [2023-11-23 08:57:54,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 08:57:54,297 INFO L225 Difference]: With dead ends: 304 [2023-11-23 08:57:54,297 INFO L226 Difference]: Without dead ends: 187 [2023-11-23 08:57:54,297 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 375 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=363, Unknown=0, NotChecked=0, Total=462 [2023-11-23 08:57:54,298 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 16 mSDsluCounter, 1614 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 1779 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-23 08:57:54,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 1779 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-23 08:57:54,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2023-11-23 08:57:54,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2023-11-23 08:57:54,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 130 states have (on average 1.2) internal successors, (156), 131 states have internal predecessors, (156), 36 states have call successors, (36), 18 states have call predecessors, (36), 20 states have return successors, (43), 38 states have call predecessors, (43), 35 states have call successors, (43) [2023-11-23 08:57:54,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 235 transitions. [2023-11-23 08:57:54,304 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 235 transitions. Word has length 187 [2023-11-23 08:57:54,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 08:57:54,305 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 235 transitions. [2023-11-23 08:57:54,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 5.764705882352941) internal successors, (98), 19 states have internal predecessors, (98), 6 states have call successors, (26), 2 states have call predecessors, (26), 5 states have return successors, (26), 6 states have call predecessors, (26), 6 states have call successors, (26) [2023-11-23 08:57:54,305 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 235 transitions. [2023-11-23 08:57:54,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2023-11-23 08:57:54,306 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 08:57:54,306 INFO L195 NwaCegarLoop]: trace histogram [9, 8, 6, 6, 6, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:57:54,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2023-11-23 08:57:54,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:57:54,520 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 08:57:54,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 08:57:54,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1778742803, now seen corresponding path program 3 times [2023-11-23 08:57:54,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-23 08:57:54,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207059029] [2023-11-23 08:57:54,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 08:57:54,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 08:57:54,565 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-11-23 08:57:54,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [20928224] [2023-11-23 08:57:54,565 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-23 08:57:54,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-23 08:57:54,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-11-23 08:57:54,566 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-23 08:57:54,589 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-11-23 08:57:55,476 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2023-11-23 08:57:55,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-23 08:57:55,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 2441 conjuncts, 90 conjunts are in the unsatisfiable core [2023-11-23 08:57:55,492 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-23 08:57:55,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 35 [2023-11-23 08:57:55,604 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2023-11-23 08:57:55,611 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2023-11-23 08:57:55,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 131 [2023-11-23 08:57:55,700 INFO L349 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2023-11-23 08:57:55,701 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 131 treesize of output 303 [2023-11-23 08:57:55,966 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:57:55,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 3 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 72 [2023-11-23 08:57:55,994 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:57:55,996 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 107 [2023-11-23 08:57:56,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 5 [2023-11-23 08:57:56,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:57:56,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 20 [2023-11-23 08:57:56,085 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:57:56,098 INFO L349 Elim1Store]: treesize reduction 23, result has 23.3 percent of original size [2023-11-23 08:57:56,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 20 [2023-11-23 08:57:56,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 131 [2023-11-23 08:57:56,243 INFO L349 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2023-11-23 08:57:56,244 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 131 treesize of output 303 [2023-11-23 08:57:56,378 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 31 [2023-11-23 08:57:56,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 31 [2023-11-23 08:57:56,447 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 5 [2023-11-23 08:57:56,473 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 5 [2023-11-23 08:57:56,633 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 131 [2023-11-23 08:57:56,641 INFO L349 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2023-11-23 08:57:56,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 131 treesize of output 303 [2023-11-23 08:57:56,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:57:56,895 INFO L349 Elim1Store]: treesize reduction 26, result has 43.5 percent of original size [2023-11-23 08:57:56,895 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 47 treesize of output 41 [2023-11-23 08:57:56,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:57:56,926 INFO L349 Elim1Store]: treesize reduction 25, result has 3.8 percent of original size [2023-11-23 08:57:56,926 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 130 [2023-11-23 08:57:56,944 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 20 [2023-11-23 08:57:57,066 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 131 [2023-11-23 08:57:57,072 INFO L349 Elim1Store]: treesize reduction 52, result has 1.9 percent of original size [2023-11-23 08:57:57,072 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 131 treesize of output 303 [2023-11-23 08:57:57,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:57:57,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:57:57,185 INFO L349 Elim1Store]: treesize reduction 23, result has 4.2 percent of original size [2023-11-23 08:57:57,185 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 34 [2023-11-23 08:57:57,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:57:57,215 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 08:57:57,216 INFO L173 IndexEqualityManager]: detected equality via solver [2023-11-23 08:57:57,218 INFO L349 Elim1Store]: treesize reduction 8, result has 11.1 percent of original size [2023-11-23 08:57:57,218 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 34 [2023-11-23 08:57:57,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:57:57,282 INFO L349 Elim1Store]: treesize reduction 23, result has 23.3 percent of original size [2023-11-23 08:57:57,283 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 22 [2023-11-23 08:57:57,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-11-23 08:57:57,327 INFO L349 Elim1Store]: treesize reduction 26, result has 43.5 percent of original size [2023-11-23 08:57:57,328 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 43 [2023-11-23 08:57:57,882 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 68 proven. 9 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2023-11-23 08:57:57,882 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-23 08:58:01,319 INFO L349 Elim1Store]: treesize reduction 2417, result has 29.1 percent of original size [2023-11-23 08:58:01,319 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 16 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 16 new quantified variables, introduced 80 case distinctions, treesize of input 931 treesize of output 2332 [2023-11-23 08:58:24,008 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:58:24,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 551 treesize of output 614 [2023-11-23 08:58:24,238 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:58:24,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 525 treesize of output 588 [2023-11-23 08:58:24,497 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:58:24,498 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 499 treesize of output 562 [2023-11-23 08:58:24,776 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-11-23 08:58:24,777 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 473 treesize of output 536 Killed by 15