./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115abd50-0e4a-42b9-ba55-b306571d6278/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115abd50-0e4a-42b9-ba55-b306571d6278/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115abd50-0e4a-42b9-ba55-b306571d6278/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115abd50-0e4a-42b9-ba55-b306571d6278/bin/uautomizer-verify-bycVGegfSx/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115abd50-0e4a-42b9-ba55-b306571d6278/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115abd50-0e4a-42b9-ba55-b306571d6278/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 74e63e86abbcab22438f70ee6d7d7ef12eaada509b0f0a56fb5cf815aaf53aab --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 22:24:50,619 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 22:24:50,773 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115abd50-0e4a-42b9-ba55-b306571d6278/bin/uautomizer-verify-bycVGegfSx/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-11-21 22:24:50,780 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 22:24:50,781 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 22:24:50,827 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 22:24:50,828 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 22:24:50,829 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 22:24:50,830 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 22:24:50,835 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 22:24:50,836 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 22:24:50,837 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 22:24:50,837 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 22:24:50,839 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 22:24:50,840 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 22:24:50,840 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 22:24:50,841 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 22:24:50,841 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 22:24:50,842 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-11-21 22:24:50,842 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2023-11-21 22:24:50,843 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-11-21 22:24:50,843 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 22:24:50,844 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-21 22:24:50,844 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-21 22:24:50,845 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 22:24:50,845 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 22:24:50,846 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 22:24:50,846 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 22:24:50,847 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 22:24:50,847 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 22:24:50,849 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:24:50,849 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 22:24:50,850 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 22:24:50,850 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 22:24:50,850 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 22:24:50,850 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 22:24:50,851 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 22:24:50,851 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 22:24:50,851 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 22:24:50,851 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115abd50-0e4a-42b9-ba55-b306571d6278/bin/uautomizer-verify-bycVGegfSx/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115abd50-0e4a-42b9-ba55-b306571d6278/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 74e63e86abbcab22438f70ee6d7d7ef12eaada509b0f0a56fb5cf815aaf53aab [2023-11-21 22:24:51,173 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 22:24:51,206 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 22:24:51,209 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 22:24:51,211 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 22:24:51,212 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 22:24:51,213 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115abd50-0e4a-42b9-ba55-b306571d6278/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i [2023-11-21 22:24:54,249 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 22:24:54,665 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 22:24:54,666 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115abd50-0e4a-42b9-ba55-b306571d6278/sv-benchmarks/c/recursive-with-pointer/system-with-recursion.i [2023-11-21 22:24:54,686 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115abd50-0e4a-42b9-ba55-b306571d6278/bin/uautomizer-verify-bycVGegfSx/data/473ccbdc9/bc0c25ea254944109b77d8b67ef6bc63/FLAGaf4f72923 [2023-11-21 22:24:54,703 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115abd50-0e4a-42b9-ba55-b306571d6278/bin/uautomizer-verify-bycVGegfSx/data/473ccbdc9/bc0c25ea254944109b77d8b67ef6bc63 [2023-11-21 22:24:54,710 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 22:24:54,712 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 22:24:54,715 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 22:24:54,715 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 22:24:54,721 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 22:24:54,722 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:24:54" (1/1) ... [2023-11-21 22:24:54,723 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c16d9a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:54, skipping insertion in model container [2023-11-21 22:24:54,723 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 10:24:54" (1/1) ... [2023-11-21 22:24:54,788 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 22:24:55,272 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:24:55,289 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 22:24:55,413 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 22:24:55,487 WARN L675 CHandler]: The function strncpy is called, but not defined or handled by StandardFunctionHandler. [2023-11-21 22:24:55,495 INFO L206 MainTranslator]: Completed translation [2023-11-21 22:24:55,495 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:55 WrapperNode [2023-11-21 22:24:55,495 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 22:24:55,497 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 22:24:55,497 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 22:24:55,497 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 22:24:55,505 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:55" (1/1) ... [2023-11-21 22:24:55,527 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:55" (1/1) ... [2023-11-21 22:24:55,569 INFO L138 Inliner]: procedures = 184, calls = 150, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 228 [2023-11-21 22:24:55,569 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 22:24:55,570 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 22:24:55,570 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 22:24:55,571 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 22:24:55,581 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:55" (1/1) ... [2023-11-21 22:24:55,586 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:55" (1/1) ... [2023-11-21 22:24:55,595 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:55" (1/1) ... [2023-11-21 22:24:55,596 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:55" (1/1) ... [2023-11-21 22:24:55,644 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:55" (1/1) ... [2023-11-21 22:24:55,659 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:55" (1/1) ... [2023-11-21 22:24:55,663 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:55" (1/1) ... [2023-11-21 22:24:55,668 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:55" (1/1) ... [2023-11-21 22:24:55,686 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 22:24:55,687 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 22:24:55,688 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 22:24:55,688 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 22:24:55,693 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:55" (1/1) ... [2023-11-21 22:24:55,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 22:24:55,712 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115abd50-0e4a-42b9-ba55-b306571d6278/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:24:55,737 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115abd50-0e4a-42b9-ba55-b306571d6278/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 22:24:55,767 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115abd50-0e4a-42b9-ba55-b306571d6278/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 22:24:55,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-21 22:24:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2023-11-21 22:24:55,805 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2023-11-21 22:24:55,805 INFO L130 BoogieDeclarations]: Found specification of procedure event_precess [2023-11-21 22:24:55,805 INFO L138 BoogieDeclarations]: Found implementation of procedure event_precess [2023-11-21 22:24:55,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-21 22:24:55,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-21 22:24:55,806 INFO L130 BoogieDeclarations]: Found specification of procedure ASNull [2023-11-21 22:24:55,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ASNull [2023-11-21 22:24:55,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 22:24:55,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-21 22:24:55,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-21 22:24:55,807 INFO L130 BoogieDeclarations]: Found specification of procedure ASStart [2023-11-21 22:24:55,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ASStart [2023-11-21 22:24:55,808 INFO L130 BoogieDeclarations]: Found specification of procedure status_update [2023-11-21 22:24:55,809 INFO L138 BoogieDeclarations]: Found implementation of procedure status_update [2023-11-21 22:24:55,810 INFO L130 BoogieDeclarations]: Found specification of procedure message_send [2023-11-21 22:24:55,811 INFO L138 BoogieDeclarations]: Found implementation of procedure message_send [2023-11-21 22:24:55,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-21 22:24:55,811 INFO L130 BoogieDeclarations]: Found specification of procedure ASIdle [2023-11-21 22:24:55,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ASIdle [2023-11-21 22:24:55,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-21 22:24:55,811 INFO L130 BoogieDeclarations]: Found specification of procedure system_initialize [2023-11-21 22:24:55,811 INFO L138 BoogieDeclarations]: Found implementation of procedure system_initialize [2023-11-21 22:24:55,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-21 22:24:55,813 INFO L130 BoogieDeclarations]: Found specification of procedure ASStop [2023-11-21 22:24:55,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ASStop [2023-11-21 22:24:55,813 INFO L130 BoogieDeclarations]: Found specification of procedure strncpy [2023-11-21 22:24:55,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 22:24:55,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 22:24:55,996 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 22:24:55,999 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 22:24:56,969 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 22:24:57,092 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 22:24:57,092 INFO L308 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-21 22:24:57,095 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:24:57 BoogieIcfgContainer [2023-11-21 22:24:57,095 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 22:24:57,099 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 22:24:57,099 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 22:24:57,102 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 22:24:57,103 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 10:24:54" (1/3) ... [2023-11-21 22:24:57,104 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c6cd993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:24:57, skipping insertion in model container [2023-11-21 22:24:57,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 10:24:55" (2/3) ... [2023-11-21 22:24:57,106 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c6cd993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 10:24:57, skipping insertion in model container [2023-11-21 22:24:57,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 10:24:57" (3/3) ... [2023-11-21 22:24:57,107 INFO L112 eAbstractionObserver]: Analyzing ICFG system-with-recursion.i [2023-11-21 22:24:57,128 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 22:24:57,128 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 162 error locations. [2023-11-21 22:24:57,274 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 22:24:57,286 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@21d5d5d9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 22:24:57,286 INFO L358 AbstractCegarLoop]: Starting to check reachability of 162 error locations. [2023-11-21 22:24:57,291 INFO L276 IsEmpty]: Start isEmpty. Operand has 358 states, 157 states have (on average 2.1910828025477707) internal successors, (344), 319 states have internal predecessors, (344), 29 states have call successors, (29), 9 states have call predecessors, (29), 9 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2023-11-21 22:24:57,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-21 22:24:57,301 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:24:57,302 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 22:24:57,303 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-21 22:24:57,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:24:57,310 INFO L85 PathProgramCache]: Analyzing trace with hash 619048511, now seen corresponding path program 1 times [2023-11-21 22:24:57,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:24:57,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477296084] [2023-11-21 22:24:57,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:24:57,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:24:57,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:57,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:24:57,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:57,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:24:57,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:24:57,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477296084] [2023-11-21 22:24:57,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477296084] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:24:57,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:24:57,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:24:57,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714840485] [2023-11-21 22:24:57,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:24:57,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:24:57,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:24:57,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:24:57,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:24:57,805 INFO L87 Difference]: Start difference. First operand has 358 states, 157 states have (on average 2.1910828025477707) internal successors, (344), 319 states have internal predecessors, (344), 29 states have call successors, (29), 9 states have call predecessors, (29), 9 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:24:58,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:24:58,740 INFO L93 Difference]: Finished difference Result 413 states and 500 transitions. [2023-11-21 22:24:58,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:24:58,743 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 5 [2023-11-21 22:24:58,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:24:58,758 INFO L225 Difference]: With dead ends: 413 [2023-11-21 22:24:58,758 INFO L226 Difference]: Without dead ends: 412 [2023-11-21 22:24:58,760 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:24:58,764 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 507 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-21 22:24:58,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 293 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-21 22:24:58,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2023-11-21 22:24:58,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 352. [2023-11-21 22:24:58,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 170 states have (on average 2.0) internal successors, (340), 308 states have internal predecessors, (340), 32 states have call successors, (32), 11 states have call predecessors, (32), 11 states have return successors, (37), 32 states have call predecessors, (37), 32 states have call successors, (37) [2023-11-21 22:24:58,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 409 transitions. [2023-11-21 22:24:58,852 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 409 transitions. Word has length 5 [2023-11-21 22:24:58,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:24:58,853 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 409 transitions. [2023-11-21 22:24:58,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:24:58,853 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 409 transitions. [2023-11-21 22:24:58,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-21 22:24:58,854 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:24:58,854 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-21 22:24:58,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 22:24:58,855 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-21 22:24:58,855 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:24:58,855 INFO L85 PathProgramCache]: Analyzing trace with hash 619048512, now seen corresponding path program 1 times [2023-11-21 22:24:58,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:24:58,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083415206] [2023-11-21 22:24:58,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:24:58,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:24:58,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:59,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:24:59,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:24:59,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:24:59,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:24:59,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083415206] [2023-11-21 22:24:59,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083415206] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:24:59,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:24:59,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:24:59,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603573398] [2023-11-21 22:24:59,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:24:59,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:24:59,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:24:59,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:24:59,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:24:59,075 INFO L87 Difference]: Start difference. First operand 352 states and 409 transitions. Second operand has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:24:59,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:24:59,872 INFO L93 Difference]: Finished difference Result 490 states and 611 transitions. [2023-11-21 22:24:59,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:24:59,873 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 5 [2023-11-21 22:24:59,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:24:59,886 INFO L225 Difference]: With dead ends: 490 [2023-11-21 22:24:59,886 INFO L226 Difference]: Without dead ends: 490 [2023-11-21 22:24:59,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:24:59,889 INFO L413 NwaCegarLoop]: 284 mSDtfsCounter, 337 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-21 22:24:59,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 648 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-21 22:24:59,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2023-11-21 22:24:59,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 437. [2023-11-21 22:24:59,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 236 states have (on average 1.8135593220338984) internal successors, (428), 370 states have internal predecessors, (428), 44 states have call successors, (44), 18 states have call predecessors, (44), 24 states have return successors, (80), 48 states have call predecessors, (80), 44 states have call successors, (80) [2023-11-21 22:24:59,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 552 transitions. [2023-11-21 22:24:59,965 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 552 transitions. Word has length 5 [2023-11-21 22:24:59,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:24:59,965 INFO L495 AbstractCegarLoop]: Abstraction has 437 states and 552 transitions. [2023-11-21 22:24:59,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.0) internal successors, (3), 3 states have internal predecessors, (3), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:24:59,966 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 552 transitions. [2023-11-21 22:24:59,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 22:24:59,967 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:24:59,967 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:24:59,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 22:24:59,968 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-21 22:24:59,971 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:24:59,971 INFO L85 PathProgramCache]: Analyzing trace with hash -514918958, now seen corresponding path program 1 times [2023-11-21 22:24:59,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:24:59,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920362764] [2023-11-21 22:24:59,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:24:59,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:00,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:25:00,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:00,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:00,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:00,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920362764] [2023-11-21 22:25:00,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920362764] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:00,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:00,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:25:00,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734957443] [2023-11-21 22:25:00,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:00,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:25:00,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:00,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:25:00,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:25:00,195 INFO L87 Difference]: Start difference. First operand 437 states and 552 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:25:00,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:25:00,858 INFO L93 Difference]: Finished difference Result 464 states and 593 transitions. [2023-11-21 22:25:00,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:25:00,858 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2023-11-21 22:25:00,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:25:00,862 INFO L225 Difference]: With dead ends: 464 [2023-11-21 22:25:00,863 INFO L226 Difference]: Without dead ends: 464 [2023-11-21 22:25:00,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:25:00,864 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 139 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-21 22:25:00,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [139 Valid, 989 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-21 22:25:00,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2023-11-21 22:25:00,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 436. [2023-11-21 22:25:00,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 236 states have (on average 1.8093220338983051) internal successors, (427), 369 states have internal predecessors, (427), 44 states have call successors, (44), 18 states have call predecessors, (44), 24 states have return successors, (80), 48 states have call predecessors, (80), 44 states have call successors, (80) [2023-11-21 22:25:00,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 551 transitions. [2023-11-21 22:25:00,908 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 551 transitions. Word has length 8 [2023-11-21 22:25:00,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:25:00,909 INFO L495 AbstractCegarLoop]: Abstraction has 436 states and 551 transitions. [2023-11-21 22:25:00,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:25:00,909 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 551 transitions. [2023-11-21 22:25:00,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-21 22:25:00,910 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:25:00,910 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:00,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 22:25:00,911 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-21 22:25:00,911 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:00,912 INFO L85 PathProgramCache]: Analyzing trace with hash -514918957, now seen corresponding path program 1 times [2023-11-21 22:25:00,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:00,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426821362] [2023-11-21 22:25:00,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:00,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:00,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:01,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:25:01,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:01,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:01,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:01,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426821362] [2023-11-21 22:25:01,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426821362] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:01,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:01,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:25:01,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148298215] [2023-11-21 22:25:01,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:01,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:25:01,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:01,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:25:01,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:25:01,119 INFO L87 Difference]: Start difference. First operand 436 states and 551 transitions. Second operand has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:25:01,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:25:01,861 INFO L93 Difference]: Finished difference Result 463 states and 592 transitions. [2023-11-21 22:25:01,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:25:01,862 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 8 [2023-11-21 22:25:01,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:25:01,866 INFO L225 Difference]: With dead ends: 463 [2023-11-21 22:25:01,866 INFO L226 Difference]: Without dead ends: 463 [2023-11-21 22:25:01,867 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:25:01,868 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 136 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 967 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-21 22:25:01,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 967 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-21 22:25:01,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2023-11-21 22:25:01,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 435. [2023-11-21 22:25:01,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 236 states have (on average 1.805084745762712) internal successors, (426), 368 states have internal predecessors, (426), 44 states have call successors, (44), 18 states have call predecessors, (44), 24 states have return successors, (80), 48 states have call predecessors, (80), 44 states have call successors, (80) [2023-11-21 22:25:01,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 550 transitions. [2023-11-21 22:25:01,891 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 550 transitions. Word has length 8 [2023-11-21 22:25:01,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:25:01,891 INFO L495 AbstractCegarLoop]: Abstraction has 435 states and 550 transitions. [2023-11-21 22:25:01,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.2) internal successors, (6), 5 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:25:01,891 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 550 transitions. [2023-11-21 22:25:01,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-21 22:25:01,892 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:25:01,892 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:01,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 22:25:01,892 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-21 22:25:01,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:01,893 INFO L85 PathProgramCache]: Analyzing trace with hash 437055175, now seen corresponding path program 1 times [2023-11-21 22:25:01,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:01,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560838681] [2023-11-21 22:25:01,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:01,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:01,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:01,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:25:01,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:01,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:01,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:01,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560838681] [2023-11-21 22:25:01,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560838681] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:01,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:01,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:25:01,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361495054] [2023-11-21 22:25:01,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:01,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:25:01,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:01,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:25:01,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:25:01,996 INFO L87 Difference]: Start difference. First operand 435 states and 550 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:25:02,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:25:02,443 INFO L93 Difference]: Finished difference Result 462 states and 591 transitions. [2023-11-21 22:25:02,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:25:02,444 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-11-21 22:25:02,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:25:02,448 INFO L225 Difference]: With dead ends: 462 [2023-11-21 22:25:02,448 INFO L226 Difference]: Without dead ends: 462 [2023-11-21 22:25:02,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:25:02,449 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 131 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 22:25:02,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 628 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 22:25:02,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2023-11-21 22:25:02,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 434. [2023-11-21 22:25:02,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 236 states have (on average 1.8008474576271187) internal successors, (425), 367 states have internal predecessors, (425), 44 states have call successors, (44), 18 states have call predecessors, (44), 24 states have return successors, (80), 48 states have call predecessors, (80), 44 states have call successors, (80) [2023-11-21 22:25:02,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 549 transitions. [2023-11-21 22:25:02,475 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 549 transitions. Word has length 12 [2023-11-21 22:25:02,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:25:02,476 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 549 transitions. [2023-11-21 22:25:02,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:25:02,477 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 549 transitions. [2023-11-21 22:25:02,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2023-11-21 22:25:02,481 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:25:02,482 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:02,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 22:25:02,482 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-21 22:25:02,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:02,483 INFO L85 PathProgramCache]: Analyzing trace with hash 437055176, now seen corresponding path program 1 times [2023-11-21 22:25:02,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:02,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027029462] [2023-11-21 22:25:02,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:02,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:02,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:02,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:25:02,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:02,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:02,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:02,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027029462] [2023-11-21 22:25:02,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027029462] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:02,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:02,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-21 22:25:02,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453027437] [2023-11-21 22:25:02,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:02,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 22:25:02,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:02,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 22:25:02,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:25:02,639 INFO L87 Difference]: Start difference. First operand 434 states and 549 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:25:03,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:25:03,132 INFO L93 Difference]: Finished difference Result 461 states and 590 transitions. [2023-11-21 22:25:03,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 22:25:03,136 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2023-11-21 22:25:03,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:25:03,140 INFO L225 Difference]: With dead ends: 461 [2023-11-21 22:25:03,140 INFO L226 Difference]: Without dead ends: 461 [2023-11-21 22:25:03,140 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-21 22:25:03,141 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 130 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-21 22:25:03,141 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 614 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-21 22:25:03,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2023-11-21 22:25:03,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 433. [2023-11-21 22:25:03,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 236 states have (on average 1.7966101694915255) internal successors, (424), 366 states have internal predecessors, (424), 44 states have call successors, (44), 18 states have call predecessors, (44), 24 states have return successors, (80), 48 states have call predecessors, (80), 44 states have call successors, (80) [2023-11-21 22:25:03,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 548 transitions. [2023-11-21 22:25:03,162 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 548 transitions. Word has length 12 [2023-11-21 22:25:03,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:25:03,162 INFO L495 AbstractCegarLoop]: Abstraction has 433 states and 548 transitions. [2023-11-21 22:25:03,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:25:03,163 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 548 transitions. [2023-11-21 22:25:03,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-21 22:25:03,163 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:25:03,164 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:03,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 22:25:03,164 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ASNullErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-21 22:25:03,164 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:03,165 INFO L85 PathProgramCache]: Analyzing trace with hash -677456570, now seen corresponding path program 1 times [2023-11-21 22:25:03,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:03,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299388087] [2023-11-21 22:25:03,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:03,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:03,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:25:03,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:03,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:03,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:03,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299388087] [2023-11-21 22:25:03,363 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299388087] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:03,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:03,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 22:25:03,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722249318] [2023-11-21 22:25:03,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:03,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 22:25:03,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:03,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 22:25:03,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:25:03,365 INFO L87 Difference]: Start difference. First operand 433 states and 548 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:25:04,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:25:04,265 INFO L93 Difference]: Finished difference Result 491 states and 639 transitions. [2023-11-21 22:25:04,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-21 22:25:04,266 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2023-11-21 22:25:04,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:25:04,270 INFO L225 Difference]: With dead ends: 491 [2023-11-21 22:25:04,270 INFO L226 Difference]: Without dead ends: 491 [2023-11-21 22:25:04,271 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-11-21 22:25:04,272 INFO L413 NwaCegarLoop]: 293 mSDtfsCounter, 200 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 1111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-21 22:25:04,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 1326 Invalid, 1111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1050 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-21 22:25:04,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2023-11-21 22:25:04,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 450. [2023-11-21 22:25:04,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 250 states have (on average 1.78) internal successors, (445), 380 states have internal predecessors, (445), 45 states have call successors, (45), 20 states have call predecessors, (45), 26 states have return successors, (83), 49 states have call predecessors, (83), 45 states have call successors, (83) [2023-11-21 22:25:04,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 573 transitions. [2023-11-21 22:25:04,302 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 573 transitions. Word has length 20 [2023-11-21 22:25:04,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:25:04,303 INFO L495 AbstractCegarLoop]: Abstraction has 450 states and 573 transitions. [2023-11-21 22:25:04,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:25:04,303 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 573 transitions. [2023-11-21 22:25:04,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-11-21 22:25:04,304 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:25:04,304 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:04,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 22:25:04,305 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ASNullErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-21 22:25:04,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:04,305 INFO L85 PathProgramCache]: Analyzing trace with hash -677456569, now seen corresponding path program 1 times [2023-11-21 22:25:04,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:04,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088606214] [2023-11-21 22:25:04,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:04,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:04,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:04,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:25:04,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:04,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:04,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:04,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088606214] [2023-11-21 22:25:04,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088606214] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:04,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:04,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 22:25:04,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052747705] [2023-11-21 22:25:04,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:04,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 22:25:04,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:04,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 22:25:04,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:25:04,698 INFO L87 Difference]: Start difference. First operand 450 states and 573 transitions. Second operand has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:25:05,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:25:05,838 INFO L93 Difference]: Finished difference Result 490 states and 638 transitions. [2023-11-21 22:25:05,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 22:25:05,839 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2023-11-21 22:25:05,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:25:05,843 INFO L225 Difference]: With dead ends: 490 [2023-11-21 22:25:05,843 INFO L226 Difference]: Without dead ends: 490 [2023-11-21 22:25:05,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2023-11-21 22:25:05,845 INFO L413 NwaCegarLoop]: 294 mSDtfsCounter, 192 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 1117 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 1263 SdHoareTripleChecker+Invalid, 1175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:25:05,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 1263 Invalid, 1175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1117 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-21 22:25:05,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2023-11-21 22:25:05,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 450. [2023-11-21 22:25:05,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 250 states have (on average 1.776) internal successors, (444), 380 states have internal predecessors, (444), 45 states have call successors, (45), 20 states have call predecessors, (45), 26 states have return successors, (83), 49 states have call predecessors, (83), 45 states have call successors, (83) [2023-11-21 22:25:05,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 572 transitions. [2023-11-21 22:25:05,868 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 572 transitions. Word has length 20 [2023-11-21 22:25:05,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:25:05,869 INFO L495 AbstractCegarLoop]: Abstraction has 450 states and 572 transitions. [2023-11-21 22:25:05,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.2857142857142856) internal successors, (16), 5 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:25:05,869 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 572 transitions. [2023-11-21 22:25:05,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-21 22:25:05,870 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:25:05,870 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:05,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-21 22:25:05,871 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-21 22:25:05,871 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:05,872 INFO L85 PathProgramCache]: Analyzing trace with hash 462384011, now seen corresponding path program 1 times [2023-11-21 22:25:05,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:05,872 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532062882] [2023-11-21 22:25:05,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:05,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:05,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:06,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:25:06,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:06,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:06,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:06,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532062882] [2023-11-21 22:25:06,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532062882] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:06,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:06,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 22:25:06,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837920286] [2023-11-21 22:25:06,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:06,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 22:25:06,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:06,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 22:25:06,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:25:06,177 INFO L87 Difference]: Start difference. First operand 450 states and 572 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:25:07,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:25:07,173 INFO L93 Difference]: Finished difference Result 574 states and 758 transitions. [2023-11-21 22:25:07,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-21 22:25:07,174 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2023-11-21 22:25:07,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:25:07,180 INFO L225 Difference]: With dead ends: 574 [2023-11-21 22:25:07,180 INFO L226 Difference]: Without dead ends: 574 [2023-11-21 22:25:07,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-11-21 22:25:07,183 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 313 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 1103 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-21 22:25:07,184 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 1251 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1103 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-21 22:25:07,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2023-11-21 22:25:07,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 482. [2023-11-21 22:25:07,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 273 states have (on average 1.7619047619047619) internal successors, (481), 406 states have internal predecessors, (481), 51 states have call successors, (51), 24 states have call predecessors, (51), 29 states have return successors, (99), 51 states have call predecessors, (99), 51 states have call successors, (99) [2023-11-21 22:25:07,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 631 transitions. [2023-11-21 22:25:07,210 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 631 transitions. Word has length 21 [2023-11-21 22:25:07,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:25:07,211 INFO L495 AbstractCegarLoop]: Abstraction has 482 states and 631 transitions. [2023-11-21 22:25:07,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 5 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:25:07,211 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 631 transitions. [2023-11-21 22:25:07,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-11-21 22:25:07,212 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:25:07,212 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:07,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 22:25:07,214 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ASStartErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-21 22:25:07,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:07,214 INFO L85 PathProgramCache]: Analyzing trace with hash 462384012, now seen corresponding path program 1 times [2023-11-21 22:25:07,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:07,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502749622] [2023-11-21 22:25:07,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:07,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:07,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:07,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:25:07,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:07,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:07,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:07,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502749622] [2023-11-21 22:25:07,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502749622] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:07,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:07,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-21 22:25:07,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051196626] [2023-11-21 22:25:07,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:07,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 22:25:07,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:07,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 22:25:07,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:25:07,648 INFO L87 Difference]: Start difference. First operand 482 states and 631 transitions. Second operand has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:25:08,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:25:08,896 INFO L93 Difference]: Finished difference Result 473 states and 589 transitions. [2023-11-21 22:25:08,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-21 22:25:08,901 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2023-11-21 22:25:08,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:25:08,905 INFO L225 Difference]: With dead ends: 473 [2023-11-21 22:25:08,905 INFO L226 Difference]: Without dead ends: 473 [2023-11-21 22:25:08,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2023-11-21 22:25:08,907 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 577 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 1464 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 1006 SdHoareTripleChecker+Invalid, 1590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:25:08,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 1006 Invalid, 1590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1464 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-21 22:25:08,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2023-11-21 22:25:08,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 394. [2023-11-21 22:25:08,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 207 states have (on average 1.8405797101449275) internal successors, (381), 341 states have internal predecessors, (381), 39 states have call successors, (39), 18 states have call predecessors, (39), 19 states have return successors, (52), 34 states have call predecessors, (52), 39 states have call successors, (52) [2023-11-21 22:25:08,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 472 transitions. [2023-11-21 22:25:08,925 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 472 transitions. Word has length 21 [2023-11-21 22:25:08,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:25:08,926 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 472 transitions. [2023-11-21 22:25:08,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.8888888888888888) internal successors, (17), 8 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-21 22:25:08,926 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 472 transitions. [2023-11-21 22:25:08,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-11-21 22:25:08,927 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:25:08,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:08,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-21 22:25:08,928 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting system_initializeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-21 22:25:08,928 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:08,929 INFO L85 PathProgramCache]: Analyzing trace with hash -859393083, now seen corresponding path program 1 times [2023-11-21 22:25:08,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:08,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348072520] [2023-11-21 22:25:08,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:08,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:08,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:09,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:25:09,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:09,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-21 22:25:09,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:09,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:09,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:09,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348072520] [2023-11-21 22:25:09,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348072520] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:09,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:09,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 22:25:09,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327314053] [2023-11-21 22:25:09,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:09,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:25:09,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:09,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:25:09,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:25:09,064 INFO L87 Difference]: Start difference. First operand 394 states and 472 transitions. Second operand has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 22:25:09,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:25:09,560 INFO L93 Difference]: Finished difference Result 443 states and 547 transitions. [2023-11-21 22:25:09,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 22:25:09,561 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 30 [2023-11-21 22:25:09,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:25:09,564 INFO L225 Difference]: With dead ends: 443 [2023-11-21 22:25:09,565 INFO L226 Difference]: Without dead ends: 441 [2023-11-21 22:25:09,565 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-21 22:25:09,566 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 151 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 22:25:09,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 1145 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 22:25:09,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2023-11-21 22:25:09,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 401. [2023-11-21 22:25:09,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 213 states have (on average 1.8309859154929577) internal successors, (390), 347 states have internal predecessors, (390), 39 states have call successors, (39), 19 states have call predecessors, (39), 20 states have return successors, (52), 34 states have call predecessors, (52), 39 states have call successors, (52) [2023-11-21 22:25:09,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 481 transitions. [2023-11-21 22:25:09,581 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 481 transitions. Word has length 30 [2023-11-21 22:25:09,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:25:09,582 INFO L495 AbstractCegarLoop]: Abstraction has 401 states and 481 transitions. [2023-11-21 22:25:09,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 22:25:09,582 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 481 transitions. [2023-11-21 22:25:09,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-11-21 22:25:09,583 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:25:09,583 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:09,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-21 22:25:09,584 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-21 22:25:09,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:09,584 INFO L85 PathProgramCache]: Analyzing trace with hash -433897454, now seen corresponding path program 1 times [2023-11-21 22:25:09,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:09,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551632831] [2023-11-21 22:25:09,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:09,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:09,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:09,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:25:09,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:09,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-21 22:25:09,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:09,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2023-11-21 22:25:09,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:09,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:09,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:09,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551632831] [2023-11-21 22:25:09,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551632831] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:09,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:09,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-21 22:25:09,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477423795] [2023-11-21 22:25:09,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:09,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-21 22:25:09,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:09,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-21 22:25:09,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-11-21 22:25:09,922 INFO L87 Difference]: Start difference. First operand 401 states and 481 transitions. Second operand has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-21 22:25:11,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:25:11,137 INFO L93 Difference]: Finished difference Result 442 states and 562 transitions. [2023-11-21 22:25:11,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-21 22:25:11,138 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 29 [2023-11-21 22:25:11,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:25:11,141 INFO L225 Difference]: With dead ends: 442 [2023-11-21 22:25:11,141 INFO L226 Difference]: Without dead ends: 436 [2023-11-21 22:25:11,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-11-21 22:25:11,142 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 163 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 1385 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 1485 SdHoareTripleChecker+Invalid, 1431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 1385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-11-21 22:25:11,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 1485 Invalid, 1431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 1385 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-11-21 22:25:11,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2023-11-21 22:25:11,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 399. [2023-11-21 22:25:11,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 399 states, 212 states have (on average 1.830188679245283) internal successors, (388), 345 states have internal predecessors, (388), 39 states have call successors, (39), 19 states have call predecessors, (39), 19 states have return successors, (51), 34 states have call predecessors, (51), 39 states have call successors, (51) [2023-11-21 22:25:11,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 478 transitions. [2023-11-21 22:25:11,159 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 478 transitions. Word has length 29 [2023-11-21 22:25:11,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:25:11,160 INFO L495 AbstractCegarLoop]: Abstraction has 399 states and 478 transitions. [2023-11-21 22:25:11,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-21 22:25:11,161 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 478 transitions. [2023-11-21 22:25:11,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2023-11-21 22:25:11,164 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:25:11,164 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:11,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-21 22:25:11,164 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting system_initializeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-21 22:25:11,165 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:11,165 INFO L85 PathProgramCache]: Analyzing trace with hash -161418333, now seen corresponding path program 1 times [2023-11-21 22:25:11,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:11,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563669649] [2023-11-21 22:25:11,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:11,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:11,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:11,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:25:11,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:11,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-21 22:25:11,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:11,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:11,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:11,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563669649] [2023-11-21 22:25:11,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563669649] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:11,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:11,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-21 22:25:11,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450828511] [2023-11-21 22:25:11,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:11,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-21 22:25:11,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:11,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-21 22:25:11,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-21 22:25:11,501 INFO L87 Difference]: Start difference. First operand 399 states and 478 transitions. Second operand has 10 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 22:25:13,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:25:13,443 INFO L93 Difference]: Finished difference Result 625 states and 864 transitions. [2023-11-21 22:25:13,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-11-21 22:25:13,444 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2023-11-21 22:25:13,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:25:13,450 INFO L225 Difference]: With dead ends: 625 [2023-11-21 22:25:13,450 INFO L226 Difference]: Without dead ends: 621 [2023-11-21 22:25:13,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=168, Invalid=534, Unknown=0, NotChecked=0, Total=702 [2023-11-21 22:25:13,452 INFO L413 NwaCegarLoop]: 380 mSDtfsCounter, 441 mSDsluCounter, 1600 mSDsCounter, 0 mSdLazyCounter, 1565 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 1980 SdHoareTripleChecker+Invalid, 1725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-11-21 22:25:13,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 1980 Invalid, 1725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1565 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-11-21 22:25:13,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2023-11-21 22:25:13,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 571. [2023-11-21 22:25:13,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 340 states have (on average 1.6588235294117648) internal successors, (564), 465 states have internal predecessors, (564), 57 states have call successors, (57), 30 states have call predecessors, (57), 45 states have return successors, (200), 75 states have call predecessors, (200), 57 states have call successors, (200) [2023-11-21 22:25:13,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 821 transitions. [2023-11-21 22:25:13,489 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 821 transitions. Word has length 32 [2023-11-21 22:25:13,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:25:13,489 INFO L495 AbstractCegarLoop]: Abstraction has 571 states and 821 transitions. [2023-11-21 22:25:13,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.5) internal successors, (25), 8 states have internal predecessors, (25), 3 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 22:25:13,490 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 821 transitions. [2023-11-21 22:25:13,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-11-21 22:25:13,491 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:25:13,492 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:13,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-21 22:25:13,492 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting system_initializeErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-21 22:25:13,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:13,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1122070044, now seen corresponding path program 1 times [2023-11-21 22:25:13,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:13,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327104388] [2023-11-21 22:25:13,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:13,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:13,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:13,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:25:13,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:14,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-21 22:25:14,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:14,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:14,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:14,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327104388] [2023-11-21 22:25:14,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327104388] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:14,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:14,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-21 22:25:14,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812928878] [2023-11-21 22:25:14,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:14,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-21 22:25:14,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:14,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-21 22:25:14,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2023-11-21 22:25:14,038 INFO L87 Difference]: Start difference. First operand 571 states and 821 transitions. Second operand has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 22:25:15,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:25:15,115 INFO L93 Difference]: Finished difference Result 609 states and 893 transitions. [2023-11-21 22:25:15,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 22:25:15,116 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 33 [2023-11-21 22:25:15,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:25:15,121 INFO L225 Difference]: With dead ends: 609 [2023-11-21 22:25:15,121 INFO L226 Difference]: Without dead ends: 609 [2023-11-21 22:25:15,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2023-11-21 22:25:15,123 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 1201 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 715 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 1022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 715 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-11-21 22:25:15,123 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1207 Valid, 267 Invalid, 1022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 715 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-11-21 22:25:15,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2023-11-21 22:25:15,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 578. [2023-11-21 22:25:15,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 360 states have (on average 1.5333333333333334) internal successors, (552), 460 states have internal predecessors, (552), 57 states have call successors, (57), 30 states have call predecessors, (57), 51 states have return successors, (231), 87 states have call predecessors, (231), 57 states have call successors, (231) [2023-11-21 22:25:15,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 840 transitions. [2023-11-21 22:25:15,156 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 840 transitions. Word has length 33 [2023-11-21 22:25:15,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:25:15,156 INFO L495 AbstractCegarLoop]: Abstraction has 578 states and 840 transitions. [2023-11-21 22:25:15,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.888888888888889) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 22:25:15,157 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 840 transitions. [2023-11-21 22:25:15,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-21 22:25:15,158 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:25:15,158 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:15,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-21 22:25:15,158 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting system_initializeErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-21 22:25:15,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:15,159 INFO L85 PathProgramCache]: Analyzing trace with hash 424433088, now seen corresponding path program 1 times [2023-11-21 22:25:15,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:15,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103599169] [2023-11-21 22:25:15,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:15,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:15,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:16,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:25:16,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:16,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-21 22:25:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:16,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:16,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:16,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103599169] [2023-11-21 22:25:16,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103599169] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:16,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:16,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-11-21 22:25:16,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517114090] [2023-11-21 22:25:16,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:16,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-21 22:25:16,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:16,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-21 22:25:16,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-11-21 22:25:16,175 INFO L87 Difference]: Start difference. First operand 578 states and 840 transitions. Second operand has 13 states, 12 states have (on average 2.25) internal successors, (27), 11 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 22:25:17,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:25:17,250 INFO L93 Difference]: Finished difference Result 634 states and 947 transitions. [2023-11-21 22:25:17,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-21 22:25:17,250 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.25) internal successors, (27), 11 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2023-11-21 22:25:17,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:25:17,256 INFO L225 Difference]: With dead ends: 634 [2023-11-21 22:25:17,256 INFO L226 Difference]: Without dead ends: 634 [2023-11-21 22:25:17,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2023-11-21 22:25:17,258 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 648 mSDsluCounter, 871 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 1253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-21 22:25:17,258 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [648 Valid, 1133 Invalid, 1253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-21 22:25:17,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2023-11-21 22:25:17,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 583. [2023-11-21 22:25:17,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 364 states have (on average 1.5302197802197801) internal successors, (557), 463 states have internal predecessors, (557), 58 states have call successors, (58), 31 states have call predecessors, (58), 51 states have return successors, (233), 88 states have call predecessors, (233), 58 states have call successors, (233) [2023-11-21 22:25:17,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 848 transitions. [2023-11-21 22:25:17,291 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 848 transitions. Word has length 34 [2023-11-21 22:25:17,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:25:17,292 INFO L495 AbstractCegarLoop]: Abstraction has 583 states and 848 transitions. [2023-11-21 22:25:17,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.25) internal successors, (27), 11 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 22:25:17,292 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 848 transitions. [2023-11-21 22:25:17,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2023-11-21 22:25:17,297 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:25:17,297 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:17,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-21 22:25:17,298 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting system_initializeErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-21 22:25:17,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:17,298 INFO L85 PathProgramCache]: Analyzing trace with hash 424433089, now seen corresponding path program 1 times [2023-11-21 22:25:17,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:17,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169218049] [2023-11-21 22:25:17,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:17,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:17,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:18,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:25:18,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:18,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-21 22:25:18,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:18,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:18,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:18,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169218049] [2023-11-21 22:25:18,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169218049] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:18,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:18,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-11-21 22:25:18,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149519765] [2023-11-21 22:25:18,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:18,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-21 22:25:18,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:18,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-21 22:25:18,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2023-11-21 22:25:18,843 INFO L87 Difference]: Start difference. First operand 583 states and 848 transitions. Second operand has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 22:25:20,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:25:20,864 INFO L93 Difference]: Finished difference Result 633 states and 946 transitions. [2023-11-21 22:25:20,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-21 22:25:20,865 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 34 [2023-11-21 22:25:20,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:25:20,870 INFO L225 Difference]: With dead ends: 633 [2023-11-21 22:25:20,870 INFO L226 Difference]: Without dead ends: 633 [2023-11-21 22:25:20,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2023-11-21 22:25:20,872 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 228 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 1824 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 1573 SdHoareTripleChecker+Invalid, 1904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2023-11-21 22:25:20,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 1573 Invalid, 1904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1824 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2023-11-21 22:25:20,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2023-11-21 22:25:20,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 583. [2023-11-21 22:25:20,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 364 states have (on average 1.5274725274725274) internal successors, (556), 463 states have internal predecessors, (556), 58 states have call successors, (58), 31 states have call predecessors, (58), 51 states have return successors, (233), 88 states have call predecessors, (233), 58 states have call successors, (233) [2023-11-21 22:25:20,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 847 transitions. [2023-11-21 22:25:20,907 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 847 transitions. Word has length 34 [2023-11-21 22:25:20,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:25:20,907 INFO L495 AbstractCegarLoop]: Abstraction has 583 states and 847 transitions. [2023-11-21 22:25:20,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.076923076923077) internal successors, (27), 12 states have internal predecessors, (27), 3 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-11-21 22:25:20,908 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 847 transitions. [2023-11-21 22:25:20,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-21 22:25:20,908 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:25:20,909 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:20,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-21 22:25:20,909 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting system_initializeErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-21 22:25:20,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:20,910 INFO L85 PathProgramCache]: Analyzing trace with hash -141691295, now seen corresponding path program 1 times [2023-11-21 22:25:20,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:20,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013819979] [2023-11-21 22:25:20,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:20,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:20,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:21,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:25:21,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:21,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-21 22:25:21,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:21,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:21,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:21,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013819979] [2023-11-21 22:25:21,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013819979] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:21,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:21,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:25:21,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875910176] [2023-11-21 22:25:21,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:21,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:25:21,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:21,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:25:21,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:25:21,023 INFO L87 Difference]: Start difference. First operand 583 states and 847 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 22:25:21,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:25:21,493 INFO L93 Difference]: Finished difference Result 584 states and 848 transitions. [2023-11-21 22:25:21,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:25:21,494 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2023-11-21 22:25:21,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:25:21,499 INFO L225 Difference]: With dead ends: 584 [2023-11-21 22:25:21,499 INFO L226 Difference]: Without dead ends: 584 [2023-11-21 22:25:21,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:25:21,500 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 241 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 312 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 571 SdHoareTripleChecker+Invalid, 388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 22:25:21,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [241 Valid, 571 Invalid, 388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 312 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 22:25:21,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2023-11-21 22:25:21,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 581. [2023-11-21 22:25:21,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 364 states have (on average 1.521978021978022) internal successors, (554), 461 states have internal predecessors, (554), 58 states have call successors, (58), 31 states have call predecessors, (58), 51 states have return successors, (233), 88 states have call predecessors, (233), 58 states have call successors, (233) [2023-11-21 22:25:21,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 845 transitions. [2023-11-21 22:25:21,555 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 845 transitions. Word has length 36 [2023-11-21 22:25:21,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:25:21,556 INFO L495 AbstractCegarLoop]: Abstraction has 581 states and 845 transitions. [2023-11-21 22:25:21,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 22:25:21,557 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 845 transitions. [2023-11-21 22:25:21,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2023-11-21 22:25:21,557 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:25:21,557 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 22:25:21,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-11-21 22:25:21,558 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting system_initializeErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-21 22:25:21,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:21,559 INFO L85 PathProgramCache]: Analyzing trace with hash -141691294, now seen corresponding path program 1 times [2023-11-21 22:25:21,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:21,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674946405] [2023-11-21 22:25:21,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:21,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:21,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:25:21,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:21,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-21 22:25:21,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:21,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:21,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:21,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674946405] [2023-11-21 22:25:21,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674946405] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:21,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:21,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 22:25:21,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805921064] [2023-11-21 22:25:21,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:21,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 22:25:21,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:21,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 22:25:21,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-11-21 22:25:21,732 INFO L87 Difference]: Start difference. First operand 581 states and 845 transitions. Second operand has 5 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 22:25:22,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:25:22,236 INFO L93 Difference]: Finished difference Result 582 states and 846 transitions. [2023-11-21 22:25:22,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-21 22:25:22,237 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2023-11-21 22:25:22,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:25:22,242 INFO L225 Difference]: With dead ends: 582 [2023-11-21 22:25:22,242 INFO L226 Difference]: Without dead ends: 582 [2023-11-21 22:25:22,242 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:25:22,243 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 120 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 697 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-21 22:25:22,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 697 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-21 22:25:22,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2023-11-21 22:25:22,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 579. [2023-11-21 22:25:22,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 364 states have (on average 1.5164835164835164) internal successors, (552), 459 states have internal predecessors, (552), 58 states have call successors, (58), 31 states have call predecessors, (58), 51 states have return successors, (233), 88 states have call predecessors, (233), 58 states have call successors, (233) [2023-11-21 22:25:22,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 843 transitions. [2023-11-21 22:25:22,286 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 843 transitions. Word has length 36 [2023-11-21 22:25:22,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:25:22,287 INFO L495 AbstractCegarLoop]: Abstraction has 579 states and 843 transitions. [2023-11-21 22:25:22,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 22:25:22,287 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 843 transitions. [2023-11-21 22:25:22,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-21 22:25:22,288 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:25:22,288 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-21 22:25:22,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-11-21 22:25:22,288 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ASNullErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-21 22:25:22,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:22,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1204943104, now seen corresponding path program 1 times [2023-11-21 22:25:22,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:22,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278097385] [2023-11-21 22:25:22,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:22,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:22,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:22,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:25:22,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:22,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-21 22:25:22,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:22,544 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:22,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:22,545 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278097385] [2023-11-21 22:25:22,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278097385] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:22,545 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:22,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-21 22:25:22,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731400764] [2023-11-21 22:25:22,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:22,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 22:25:22,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:22,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 22:25:22,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:25:22,549 INFO L87 Difference]: Start difference. First operand 579 states and 843 transitions. Second operand has 9 states, 8 states have (on average 4.375) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 22:25:23,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:25:23,501 INFO L93 Difference]: Finished difference Result 612 states and 903 transitions. [2023-11-21 22:25:23,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-21 22:25:23,502 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.375) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 44 [2023-11-21 22:25:23,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:25:23,510 INFO L225 Difference]: With dead ends: 612 [2023-11-21 22:25:23,511 INFO L226 Difference]: Without dead ends: 612 [2023-11-21 22:25:23,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2023-11-21 22:25:23,512 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 176 mSDsluCounter, 1085 mSDsCounter, 0 mSdLazyCounter, 1157 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 1367 SdHoareTripleChecker+Invalid, 1207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-21 22:25:23,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 1367 Invalid, 1207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1157 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-21 22:25:23,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2023-11-21 22:25:23,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 599. [2023-11-21 22:25:23,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 380 states have (on average 1.513157894736842) internal successors, (575), 476 states have internal predecessors, (575), 59 states have call successors, (59), 33 states have call predecessors, (59), 54 states have return successors, (237), 89 states have call predecessors, (237), 59 states have call successors, (237) [2023-11-21 22:25:23,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 871 transitions. [2023-11-21 22:25:23,557 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 871 transitions. Word has length 44 [2023-11-21 22:25:23,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:25:23,557 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 871 transitions. [2023-11-21 22:25:23,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.375) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 22:25:23,558 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 871 transitions. [2023-11-21 22:25:23,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-11-21 22:25:23,558 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:25:23,558 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-21 22:25:23,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-11-21 22:25:23,559 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ASNullErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-21 22:25:23,559 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:23,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1204943103, now seen corresponding path program 1 times [2023-11-21 22:25:23,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:23,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207819445] [2023-11-21 22:25:23,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:23,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:23,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:23,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:25:23,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:23,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-21 22:25:23,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:23,902 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:23,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:23,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207819445] [2023-11-21 22:25:23,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207819445] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:23,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:23,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-21 22:25:23,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651025793] [2023-11-21 22:25:23,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:23,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 22:25:23,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:23,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 22:25:23,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:25:23,905 INFO L87 Difference]: Start difference. First operand 599 states and 871 transitions. Second operand has 9 states, 8 states have (on average 4.375) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 22:25:24,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:25:24,878 INFO L93 Difference]: Finished difference Result 609 states and 900 transitions. [2023-11-21 22:25:24,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-11-21 22:25:24,880 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.375) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 44 [2023-11-21 22:25:24,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:25:24,885 INFO L225 Difference]: With dead ends: 609 [2023-11-21 22:25:24,885 INFO L226 Difference]: Without dead ends: 609 [2023-11-21 22:25:24,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2023-11-21 22:25:24,887 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 302 mSDsluCounter, 1006 mSDsCounter, 0 mSdLazyCounter, 1011 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1011 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-21 22:25:24,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 1287 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1011 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-21 22:25:24,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2023-11-21 22:25:24,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 599. [2023-11-21 22:25:24,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 380 states have (on average 1.5105263157894737) internal successors, (574), 476 states have internal predecessors, (574), 59 states have call successors, (59), 33 states have call predecessors, (59), 54 states have return successors, (237), 89 states have call predecessors, (237), 59 states have call successors, (237) [2023-11-21 22:25:24,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 870 transitions. [2023-11-21 22:25:24,922 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 870 transitions. Word has length 44 [2023-11-21 22:25:24,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:25:24,923 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 870 transitions. [2023-11-21 22:25:24,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.375) internal successors, (35), 5 states have internal predecessors, (35), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 22:25:24,923 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 870 transitions. [2023-11-21 22:25:24,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-21 22:25:24,924 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:25:24,924 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-21 22:25:24,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-11-21 22:25:24,924 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-21 22:25:24,925 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:24,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1290170641, now seen corresponding path program 1 times [2023-11-21 22:25:24,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:24,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387887370] [2023-11-21 22:25:24,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:24,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:24,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:25,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:25:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:25,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-21 22:25:25,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:25,169 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:25,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:25,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387887370] [2023-11-21 22:25:25,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387887370] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:25,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:25,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-21 22:25:25,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010797606] [2023-11-21 22:25:25,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:25,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 22:25:25,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:25,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 22:25:25,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:25:25,172 INFO L87 Difference]: Start difference. First operand 599 states and 870 transitions. Second operand has 9 states, 8 states have (on average 4.5) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 22:25:26,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:25:26,264 INFO L93 Difference]: Finished difference Result 676 states and 995 transitions. [2023-11-21 22:25:26,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-21 22:25:26,265 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 45 [2023-11-21 22:25:26,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:25:26,272 INFO L225 Difference]: With dead ends: 676 [2023-11-21 22:25:26,272 INFO L226 Difference]: Without dead ends: 676 [2023-11-21 22:25:26,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2023-11-21 22:25:26,273 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 297 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 1197 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1242 SdHoareTripleChecker+Invalid, 1267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-21 22:25:26,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 1242 Invalid, 1267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1197 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-21 22:25:26,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2023-11-21 22:25:26,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 607. [2023-11-21 22:25:26,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 386 states have (on average 1.5103626943005182) internal successors, (583), 482 states have internal predecessors, (583), 60 states have call successors, (60), 34 states have call predecessors, (60), 55 states have return successors, (241), 90 states have call predecessors, (241), 60 states have call successors, (241) [2023-11-21 22:25:26,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 884 transitions. [2023-11-21 22:25:26,308 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 884 transitions. Word has length 45 [2023-11-21 22:25:26,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:25:26,308 INFO L495 AbstractCegarLoop]: Abstraction has 607 states and 884 transitions. [2023-11-21 22:25:26,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 22:25:26,310 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 884 transitions. [2023-11-21 22:25:26,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-21 22:25:26,311 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:25:26,311 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-21 22:25:26,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-11-21 22:25:26,312 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ASStartErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-21 22:25:26,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:26,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1290170642, now seen corresponding path program 1 times [2023-11-21 22:25:26,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:26,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898086546] [2023-11-21 22:25:26,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:26,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:26,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:25:26,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:26,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-21 22:25:26,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:26,654 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:26,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:26,655 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898086546] [2023-11-21 22:25:26,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898086546] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:26,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:26,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-21 22:25:26,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825678691] [2023-11-21 22:25:26,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:26,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 22:25:26,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:26,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 22:25:26,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:25:26,657 INFO L87 Difference]: Start difference. First operand 607 states and 884 transitions. Second operand has 9 states, 8 states have (on average 4.5) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 22:25:27,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:25:27,541 INFO L93 Difference]: Finished difference Result 616 states and 905 transitions. [2023-11-21 22:25:27,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 22:25:27,544 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 45 [2023-11-21 22:25:27,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:25:27,549 INFO L225 Difference]: With dead ends: 616 [2023-11-21 22:25:27,549 INFO L226 Difference]: Without dead ends: 616 [2023-11-21 22:25:27,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2023-11-21 22:25:27,550 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 305 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 996 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 1087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-21 22:25:27,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 1271 Invalid, 1087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 996 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-21 22:25:27,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2023-11-21 22:25:27,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 607. [2023-11-21 22:25:27,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 607 states, 386 states have (on average 1.5077720207253886) internal successors, (582), 482 states have internal predecessors, (582), 60 states have call successors, (60), 34 states have call predecessors, (60), 55 states have return successors, (241), 90 states have call predecessors, (241), 60 states have call successors, (241) [2023-11-21 22:25:27,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 607 states to 607 states and 883 transitions. [2023-11-21 22:25:27,578 INFO L78 Accepts]: Start accepts. Automaton has 607 states and 883 transitions. Word has length 45 [2023-11-21 22:25:27,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:25:27,578 INFO L495 AbstractCegarLoop]: Abstraction has 607 states and 883 transitions. [2023-11-21 22:25:27,579 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.5) internal successors, (36), 5 states have internal predecessors, (36), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 22:25:27,579 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states and 883 transitions. [2023-11-21 22:25:27,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-21 22:25:27,579 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:25:27,580 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-21 22:25:27,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-11-21 22:25:27,580 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ASIdleErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-21 22:25:27,580 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:27,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1329796158, now seen corresponding path program 1 times [2023-11-21 22:25:27,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:27,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488259601] [2023-11-21 22:25:27,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:27,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:27,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:27,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:25:27,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:27,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-21 22:25:27,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:27,919 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:27,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:27,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488259601] [2023-11-21 22:25:27,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488259601] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:27,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:27,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-21 22:25:27,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535252162] [2023-11-21 22:25:27,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:27,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 22:25:27,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:27,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 22:25:27,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:25:27,923 INFO L87 Difference]: Start difference. First operand 607 states and 883 transitions. Second operand has 9 states, 8 states have (on average 4.625) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 22:25:28,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:25:28,916 INFO L93 Difference]: Finished difference Result 656 states and 978 transitions. [2023-11-21 22:25:28,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-21 22:25:28,916 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.625) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 46 [2023-11-21 22:25:28,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:25:28,921 INFO L225 Difference]: With dead ends: 656 [2023-11-21 22:25:28,921 INFO L226 Difference]: Without dead ends: 656 [2023-11-21 22:25:28,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2023-11-21 22:25:28,922 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 340 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 1006 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 1261 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-21 22:25:28,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 1261 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1006 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-21 22:25:28,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2023-11-21 22:25:28,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 640. [2023-11-21 22:25:28,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 640 states, 410 states have (on average 1.5) internal successors, (615), 508 states have internal predecessors, (615), 64 states have call successors, (64), 36 states have call predecessors, (64), 60 states have return successors, (269), 95 states have call predecessors, (269), 64 states have call successors, (269) [2023-11-21 22:25:28,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 948 transitions. [2023-11-21 22:25:28,959 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 948 transitions. Word has length 46 [2023-11-21 22:25:28,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:25:28,959 INFO L495 AbstractCegarLoop]: Abstraction has 640 states and 948 transitions. [2023-11-21 22:25:28,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.625) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 22:25:28,960 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 948 transitions. [2023-11-21 22:25:28,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-21 22:25:28,960 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:25:28,961 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-21 22:25:28,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-11-21 22:25:28,961 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ASIdleErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-21 22:25:28,961 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:28,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1329796157, now seen corresponding path program 1 times [2023-11-21 22:25:28,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:28,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692904223] [2023-11-21 22:25:28,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:28,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:28,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:29,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:25:29,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:29,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-21 22:25:29,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:29,213 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:29,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:29,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692904223] [2023-11-21 22:25:29,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692904223] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:29,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:29,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-21 22:25:29,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479446951] [2023-11-21 22:25:29,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:29,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 22:25:29,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:29,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 22:25:29,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:25:29,216 INFO L87 Difference]: Start difference. First operand 640 states and 948 transitions. Second operand has 9 states, 8 states have (on average 4.625) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 22:25:30,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:25:30,123 INFO L93 Difference]: Finished difference Result 735 states and 1128 transitions. [2023-11-21 22:25:30,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-21 22:25:30,124 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.625) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 46 [2023-11-21 22:25:30,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:25:30,130 INFO L225 Difference]: With dead ends: 735 [2023-11-21 22:25:30,131 INFO L226 Difference]: Without dead ends: 735 [2023-11-21 22:25:30,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2023-11-21 22:25:30,132 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 379 mSDsluCounter, 945 mSDsCounter, 0 mSdLazyCounter, 1110 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 1245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-21 22:25:30,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [379 Valid, 1219 Invalid, 1245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1110 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-21 22:25:30,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2023-11-21 22:25:30,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 691. [2023-11-21 22:25:30,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 450 states have (on average 1.491111111111111) internal successors, (671), 551 states have internal predecessors, (671), 66 states have call successors, (66), 39 states have call predecessors, (66), 69 states have return successors, (292), 100 states have call predecessors, (292), 66 states have call successors, (292) [2023-11-21 22:25:30,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1029 transitions. [2023-11-21 22:25:30,167 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1029 transitions. Word has length 46 [2023-11-21 22:25:30,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:25:30,167 INFO L495 AbstractCegarLoop]: Abstraction has 691 states and 1029 transitions. [2023-11-21 22:25:30,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.625) internal successors, (37), 5 states have internal predecessors, (37), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 22:25:30,168 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1029 transitions. [2023-11-21 22:25:30,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-21 22:25:30,168 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:25:30,169 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-21 22:25:30,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-11-21 22:25:30,169 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ASStopErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-21 22:25:30,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:30,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1736999090, now seen corresponding path program 1 times [2023-11-21 22:25:30,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:30,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158037627] [2023-11-21 22:25:30,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:30,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:30,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:30,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:25:30,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:30,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-21 22:25:30,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:30,406 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:30,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:30,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158037627] [2023-11-21 22:25:30,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158037627] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:30,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:30,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-21 22:25:30,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514121179] [2023-11-21 22:25:30,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:30,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 22:25:30,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:30,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 22:25:30,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:25:30,409 INFO L87 Difference]: Start difference. First operand 691 states and 1029 transitions. Second operand has 9 states, 8 states have (on average 4.75) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 22:25:31,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:25:31,416 INFO L93 Difference]: Finished difference Result 757 states and 1170 transitions. [2023-11-21 22:25:31,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-21 22:25:31,417 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.75) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 47 [2023-11-21 22:25:31,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:25:31,425 INFO L225 Difference]: With dead ends: 757 [2023-11-21 22:25:31,425 INFO L226 Difference]: Without dead ends: 757 [2023-11-21 22:25:31,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2023-11-21 22:25:31,426 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 396 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 1200 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-21 22:25:31,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 1200 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-21 22:25:31,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2023-11-21 22:25:31,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 725. [2023-11-21 22:25:31,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 725 states, 478 states have (on average 1.4895397489539748) internal successors, (712), 581 states have internal predecessors, (712), 67 states have call successors, (67), 41 states have call predecessors, (67), 74 states have return successors, (308), 102 states have call predecessors, (308), 67 states have call successors, (308) [2023-11-21 22:25:31,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 725 states to 725 states and 1087 transitions. [2023-11-21 22:25:31,468 INFO L78 Accepts]: Start accepts. Automaton has 725 states and 1087 transitions. Word has length 47 [2023-11-21 22:25:31,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:25:31,469 INFO L495 AbstractCegarLoop]: Abstraction has 725 states and 1087 transitions. [2023-11-21 22:25:31,470 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.75) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 22:25:31,470 INFO L276 IsEmpty]: Start isEmpty. Operand 725 states and 1087 transitions. [2023-11-21 22:25:31,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-21 22:25:31,470 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:25:31,471 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-21 22:25:31,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-11-21 22:25:31,471 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ASStopErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-21 22:25:31,471 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:31,471 INFO L85 PathProgramCache]: Analyzing trace with hash -1736999089, now seen corresponding path program 1 times [2023-11-21 22:25:31,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:31,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792197421] [2023-11-21 22:25:31,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:31,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:31,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:31,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:25:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:31,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-21 22:25:31,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:31,846 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 22:25:31,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:31,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792197421] [2023-11-21 22:25:31,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792197421] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:31,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:31,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-21 22:25:31,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540999152] [2023-11-21 22:25:31,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:31,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 22:25:31,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:31,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 22:25:31,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-11-21 22:25:31,850 INFO L87 Difference]: Start difference. First operand 725 states and 1087 transitions. Second operand has 9 states, 8 states have (on average 4.75) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 22:25:32,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:25:32,943 INFO L93 Difference]: Finished difference Result 788 states and 1213 transitions. [2023-11-21 22:25:32,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-21 22:25:32,943 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.75) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 47 [2023-11-21 22:25:32,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:25:32,951 INFO L225 Difference]: With dead ends: 788 [2023-11-21 22:25:32,952 INFO L226 Difference]: Without dead ends: 788 [2023-11-21 22:25:32,952 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2023-11-21 22:25:32,953 INFO L413 NwaCegarLoop]: 275 mSDtfsCounter, 224 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 1134 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 1381 SdHoareTripleChecker+Invalid, 1199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 1134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-21 22:25:32,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 1381 Invalid, 1199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 1134 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-21 22:25:32,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2023-11-21 22:25:32,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 767. [2023-11-21 22:25:32,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 767 states, 510 states have (on average 1.4823529411764707) internal successors, (756), 615 states have internal predecessors, (756), 71 states have call successors, (71), 43 states have call predecessors, (71), 80 states have return successors, (338), 108 states have call predecessors, (338), 71 states have call successors, (338) [2023-11-21 22:25:32,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 767 states to 767 states and 1165 transitions. [2023-11-21 22:25:32,997 INFO L78 Accepts]: Start accepts. Automaton has 767 states and 1165 transitions. Word has length 47 [2023-11-21 22:25:32,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:25:32,998 INFO L495 AbstractCegarLoop]: Abstraction has 767 states and 1165 transitions. [2023-11-21 22:25:32,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.75) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-21 22:25:32,999 INFO L276 IsEmpty]: Start isEmpty. Operand 767 states and 1165 transitions. [2023-11-21 22:25:32,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-21 22:25:32,999 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:25:33,000 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-21 22:25:33,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-11-21 22:25:33,000 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ASStartErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-21 22:25:33,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:33,001 INFO L85 PathProgramCache]: Analyzing trace with hash 521165071, now seen corresponding path program 1 times [2023-11-21 22:25:33,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:33,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892930706] [2023-11-21 22:25:33,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:33,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:33,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:25:33,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:33,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-21 22:25:33,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:33,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-21 22:25:33,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:33,175 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-21 22:25:33,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:33,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892930706] [2023-11-21 22:25:33,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892930706] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 22:25:33,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 22:25:33,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 22:25:33,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323410784] [2023-11-21 22:25:33,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 22:25:33,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 22:25:33,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 22:25:33,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 22:25:33,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-21 22:25:33,178 INFO L87 Difference]: Start difference. First operand 767 states and 1165 transitions. Second operand has 6 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-21 22:25:33,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 22:25:33,833 INFO L93 Difference]: Finished difference Result 768 states and 1166 transitions. [2023-11-21 22:25:33,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-21 22:25:33,834 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 51 [2023-11-21 22:25:33,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 22:25:33,846 INFO L225 Difference]: With dead ends: 768 [2023-11-21 22:25:33,846 INFO L226 Difference]: Without dead ends: 768 [2023-11-21 22:25:33,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-21 22:25:33,848 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 148 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 816 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-21 22:25:33,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 816 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-21 22:25:33,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2023-11-21 22:25:33,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 765. [2023-11-21 22:25:33,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 765 states, 510 states have (on average 1.4784313725490197) internal successors, (754), 613 states have internal predecessors, (754), 71 states have call successors, (71), 43 states have call predecessors, (71), 80 states have return successors, (338), 108 states have call predecessors, (338), 71 states have call successors, (338) [2023-11-21 22:25:33,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 765 states to 765 states and 1163 transitions. [2023-11-21 22:25:33,895 INFO L78 Accepts]: Start accepts. Automaton has 765 states and 1163 transitions. Word has length 51 [2023-11-21 22:25:33,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 22:25:33,895 INFO L495 AbstractCegarLoop]: Abstraction has 765 states and 1163 transitions. [2023-11-21 22:25:33,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-21 22:25:33,896 INFO L276 IsEmpty]: Start isEmpty. Operand 765 states and 1163 transitions. [2023-11-21 22:25:33,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-21 22:25:33,897 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 22:25:33,897 INFO L195 NwaCegarLoop]: trace histogram [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] [2023-11-21 22:25:33,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-11-21 22:25:33,897 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ASStartErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [event_precessErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, event_precessErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ASStartErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 159 more)] === [2023-11-21 22:25:33,898 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 22:25:33,898 INFO L85 PathProgramCache]: Analyzing trace with hash 521165072, now seen corresponding path program 1 times [2023-11-21 22:25:33,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 22:25:33,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528729528] [2023-11-21 22:25:33,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:33,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 22:25:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:35,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 22:25:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:35,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-21 22:25:35,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:35,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-21 22:25:35,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:35,488 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-21 22:25:35,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 22:25:35,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528729528] [2023-11-21 22:25:35,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528729528] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 22:25:35,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [154489682] [2023-11-21 22:25:35,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 22:25:35,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 22:25:35,490 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115abd50-0e4a-42b9-ba55-b306571d6278/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 22:25:35,492 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115abd50-0e4a-42b9-ba55-b306571d6278/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 22:25:35,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_115abd50-0e4a-42b9-ba55-b306571d6278/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 22:25:35,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 22:25:35,792 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 72 conjunts are in the unsatisfiable core [2023-11-21 22:25:35,809 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 22:25:35,874 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2023-11-21 22:25:35,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2023-11-21 22:25:36,039 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14 [2023-11-21 22:25:36,048 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2023-11-21 22:25:36,101 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 18 [2023-11-21 22:25:36,109 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 14 [2023-11-21 22:25:36,229 INFO L349 Elim1Store]: treesize reduction 19, result has 20.8 percent of original size [2023-11-21 22:25:36,230 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 58 [2023-11-21 22:25:36,240 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 19