./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.02.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/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_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.02.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 0792bb078b549cb8c62d642eddb09d42b03fb2451c67a454a8e8576be6796f29 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 21:01:53,021 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 21:01:53,114 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-21 21:01:53,120 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 21:01:53,120 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 21:01:53,146 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 21:01:53,147 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 21:01:53,147 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 21:01:53,148 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 21:01:53,149 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 21:01:53,149 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 21:01:53,150 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 21:01:53,151 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 21:01:53,151 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 21:01:53,152 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 21:01:53,153 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 21:01:53,153 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 21:01:53,154 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 21:01:53,154 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 21:01:53,155 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 21:01:53,155 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 21:01:53,156 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 21:01:53,156 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 21:01:53,157 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 21:01:53,157 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 21:01:53,158 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 21:01:53,158 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 21:01:53,158 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 21:01:53,159 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 21:01:53,159 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 21:01:53,160 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 21:01:53,160 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:01:53,160 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 21:01:53,161 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 21:01:53,161 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 21:01:53,161 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 21:01:53,162 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 21:01:53,162 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 21:01:53,163 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 21:01:53,163 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 21:01:53,163 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 21:01:53,166 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 21:01:53,166 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_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0792bb078b549cb8c62d642eddb09d42b03fb2451c67a454a8e8576be6796f29 [2023-11-21 21:01:53,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 21:01:53,528 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 21:01:53,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 21:01:53,533 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 21:01:53,533 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 21:01:53,534 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.02.cil-1.c [2023-11-21 21:01:56,703 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 21:01:56,968 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 21:01:56,969 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.02.cil-1.c [2023-11-21 21:01:56,983 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/data/15c69b416/4229ae3062094824a0bf7d9eabbe0945/FLAG7d784662f [2023-11-21 21:01:56,998 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/data/15c69b416/4229ae3062094824a0bf7d9eabbe0945 [2023-11-21 21:01:57,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 21:01:57,002 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 21:01:57,004 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 21:01:57,004 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 21:01:57,009 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 21:01:57,010 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:01:56" (1/1) ... [2023-11-21 21:01:57,011 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ea42a98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:57, skipping insertion in model container [2023-11-21 21:01:57,012 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:01:56" (1/1) ... [2023-11-21 21:01:57,065 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 21:01:57,247 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.02.cil-1.c[914,927] [2023-11-21 21:01:57,299 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.02.cil-1.c[7115,7128] [2023-11-21 21:01:57,341 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:01:57,355 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 21:01:57,368 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.02.cil-1.c[914,927] [2023-11-21 21:01:57,393 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.02.cil-1.c[7115,7128] [2023-11-21 21:01:57,446 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:01:57,475 INFO L206 MainTranslator]: Completed translation [2023-11-21 21:01:57,475 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:57 WrapperNode [2023-11-21 21:01:57,476 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 21:01:57,477 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 21:01:57,477 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 21:01:57,477 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 21:01:57,485 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:57" (1/1) ... [2023-11-21 21:01:57,499 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:57" (1/1) ... [2023-11-21 21:01:57,563 INFO L138 Inliner]: procedures = 57, calls = 63, calls flagged for inlining = 26, calls inlined = 26, statements flattened = 470 [2023-11-21 21:01:57,566 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 21:01:57,567 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 21:01:57,567 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 21:01:57,568 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 21:01:57,580 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:57" (1/1) ... [2023-11-21 21:01:57,581 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:57" (1/1) ... [2023-11-21 21:01:57,591 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:57" (1/1) ... [2023-11-21 21:01:57,622 INFO L187 HeapSplitter]: Split 2 memory accesses to 1 slices as follows [2] [2023-11-21 21:01:57,622 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:57" (1/1) ... [2023-11-21 21:01:57,622 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:57" (1/1) ... [2023-11-21 21:01:57,633 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:57" (1/1) ... [2023-11-21 21:01:57,654 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:57" (1/1) ... [2023-11-21 21:01:57,670 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:57" (1/1) ... [2023-11-21 21:01:57,672 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:57" (1/1) ... [2023-11-21 21:01:57,683 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 21:01:57,685 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 21:01:57,685 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 21:01:57,685 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 21:01:57,686 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:57" (1/1) ... [2023-11-21 21:01:57,693 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:01:57,708 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:01:57,721 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 21:01:57,755 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 21:01:57,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 21:01:57,771 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2023-11-21 21:01:57,772 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2023-11-21 21:01:57,772 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2023-11-21 21:01:57,772 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2023-11-21 21:01:57,772 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2023-11-21 21:01:57,772 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2023-11-21 21:01:57,772 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2023-11-21 21:01:57,773 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2023-11-21 21:01:57,773 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2023-11-21 21:01:57,773 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2023-11-21 21:01:57,773 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2023-11-21 21:01:57,773 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2023-11-21 21:01:57,773 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2023-11-21 21:01:57,774 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2023-11-21 21:01:57,774 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2023-11-21 21:01:57,774 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2023-11-21 21:01:57,775 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2023-11-21 21:01:57,779 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2023-11-21 21:01:57,780 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2023-11-21 21:01:57,780 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2023-11-21 21:01:57,781 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2023-11-21 21:01:57,781 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2023-11-21 21:01:57,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 21:01:57,782 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2023-11-21 21:01:57,783 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2023-11-21 21:01:57,783 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2023-11-21 21:01:57,784 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2023-11-21 21:01:57,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 21:01:57,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 21:01:57,784 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2023-11-21 21:01:57,785 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2023-11-21 21:01:57,887 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 21:01:57,890 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 21:01:58,564 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 21:01:58,841 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 21:01:58,841 INFO L308 CfgBuilder]: Removed 9 assume(true) statements. [2023-11-21 21:01:58,843 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:01:58 BoogieIcfgContainer [2023-11-21 21:01:58,844 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 21:01:58,848 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 21:01:58,848 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 21:01:58,852 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 21:01:58,852 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:01:56" (1/3) ... [2023-11-21 21:01:58,853 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38fbc592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:01:58, skipping insertion in model container [2023-11-21 21:01:58,853 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:01:57" (2/3) ... [2023-11-21 21:01:58,854 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38fbc592 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:01:58, skipping insertion in model container [2023-11-21 21:01:58,854 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:01:58" (3/3) ... [2023-11-21 21:01:58,855 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.02.cil-1.c [2023-11-21 21:01:58,876 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 21:01:58,876 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-11-21 21:01:58,949 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 21:01:58,957 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6c1f9af2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 21:01:58,957 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-11-21 21:01:58,963 INFO L276 IsEmpty]: Start isEmpty. Operand has 153 states, 106 states have (on average 1.471698113207547) internal successors, (156), 112 states have internal predecessors, (156), 30 states have call successors, (30), 14 states have call predecessors, (30), 14 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-21 21:01:58,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-21 21:01:58,979 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:01:58,980 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, 1] [2023-11-21 21:01:58,980 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:01:58,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:01:58,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1558148514, now seen corresponding path program 1 times [2023-11-21 21:01:58,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:01:58,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785191263] [2023-11-21 21:01:59,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:01:59,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:01:59,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:59,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:01:59,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:59,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:01:59,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:59,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 21:01:59,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:59,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-21 21:01:59,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:59,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-21 21:01:59,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:01:59,633 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 21:01:59,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:01:59,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785191263] [2023-11-21 21:01:59,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785191263] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:01:59,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:01:59,635 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 21:01:59,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260130484] [2023-11-21 21:01:59,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:01:59,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 21:01:59,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:01:59,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 21:01:59,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-21 21:01:59,676 INFO L87 Difference]: Start difference. First operand has 153 states, 106 states have (on average 1.471698113207547) internal successors, (156), 112 states have internal predecessors, (156), 30 states have call successors, (30), 14 states have call predecessors, (30), 14 states have return successors, (30), 29 states have call predecessors, (30), 30 states have call successors, (30) Second operand has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-21 21:02:01,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:02:01,135 INFO L93 Difference]: Finished difference Result 502 states and 735 transitions. [2023-11-21 21:02:01,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-11-21 21:02:01,138 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 37 [2023-11-21 21:02:01,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:02:01,154 INFO L225 Difference]: With dead ends: 502 [2023-11-21 21:02:01,155 INFO L226 Difference]: Without dead ends: 347 [2023-11-21 21:02:01,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2023-11-21 21:02:01,164 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 526 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 543 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-21 21:02:01,165 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [543 Valid, 534 Invalid, 853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 604 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-21 21:02:01,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2023-11-21 21:02:01,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 339. [2023-11-21 21:02:01,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 242 states have (on average 1.3471074380165289) internal successors, (326), 249 states have internal predecessors, (326), 64 states have call successors, (64), 32 states have call predecessors, (64), 31 states have return successors, (79), 59 states have call predecessors, (79), 62 states have call successors, (79) [2023-11-21 21:02:01,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 469 transitions. [2023-11-21 21:02:01,286 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 469 transitions. Word has length 37 [2023-11-21 21:02:01,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:02:01,287 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 469 transitions. [2023-11-21 21:02:01,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.857142857142857) internal successors, (27), 5 states have internal predecessors, (27), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-21 21:02:01,287 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 469 transitions. [2023-11-21 21:02:01,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-21 21:02:01,291 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:01,291 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:01,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 21:02:01,292 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:02:01,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:01,293 INFO L85 PathProgramCache]: Analyzing trace with hash -619495534, now seen corresponding path program 1 times [2023-11-21 21:02:01,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:01,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713791257] [2023-11-21 21:02:01,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:01,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:01,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:01,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:02:01,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:01,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:02:01,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:01,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 21:02:01,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:01,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:02:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:01,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-21 21:02:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:01,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-21 21:02:01,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:01,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-21 21:02:01,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:01,514 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 21:02:01,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:01,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713791257] [2023-11-21 21:02:01,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713791257] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:01,516 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:01,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 21:02:01,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061977345] [2023-11-21 21:02:01,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:01,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 21:02:01,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:01,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 21:02:01,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-21 21:02:01,527 INFO L87 Difference]: Start difference. First operand 339 states and 469 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 4 states have internal predecessors, (30), 4 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-21 21:02:02,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:02:02,098 INFO L93 Difference]: Finished difference Result 463 states and 629 transitions. [2023-11-21 21:02:02,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 21:02:02,099 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 4 states have internal predecessors, (30), 4 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) Word has length 45 [2023-11-21 21:02:02,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:02:02,108 INFO L225 Difference]: With dead ends: 463 [2023-11-21 21:02:02,109 INFO L226 Difference]: Without dead ends: 399 [2023-11-21 21:02:02,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-11-21 21:02:02,113 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 400 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 21:02:02,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 476 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 21:02:02,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 399 states. [2023-11-21 21:02:02,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 399 to 392. [2023-11-21 21:02:02,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 280 states have (on average 1.3392857142857142) internal successors, (375), 287 states have internal predecessors, (375), 72 states have call successors, (72), 39 states have call predecessors, (72), 38 states have return successors, (87), 67 states have call predecessors, (87), 70 states have call successors, (87) [2023-11-21 21:02:02,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 534 transitions. [2023-11-21 21:02:02,233 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 534 transitions. Word has length 45 [2023-11-21 21:02:02,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:02:02,234 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 534 transitions. [2023-11-21 21:02:02,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 4 states have internal predecessors, (30), 4 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-21 21:02:02,234 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 534 transitions. [2023-11-21 21:02:02,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2023-11-21 21:02:02,243 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:02,244 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:02,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 21:02:02,244 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:02:02,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:02,245 INFO L85 PathProgramCache]: Analyzing trace with hash 299479089, now seen corresponding path program 1 times [2023-11-21 21:02:02,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:02,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552813730] [2023-11-21 21:02:02,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:02,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:02,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:02,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:02:02,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:02,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:02:02,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:02,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 21:02:02,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:02,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:02:02,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:02,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-21 21:02:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:02,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-21 21:02:02,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:02,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-21 21:02:02,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:02,497 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 21:02:02,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:02,499 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552813730] [2023-11-21 21:02:02,499 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552813730] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:02,499 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:02,499 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-21 21:02:02,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026673341] [2023-11-21 21:02:02,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:02,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 21:02:02,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:02,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 21:02:02,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-21 21:02:02,504 INFO L87 Difference]: Start difference. First operand 392 states and 534 transitions. Second operand has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-21 21:02:03,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:02:03,798 INFO L93 Difference]: Finished difference Result 799 states and 1063 transitions. [2023-11-21 21:02:03,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-21 21:02:03,799 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 45 [2023-11-21 21:02:03,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:02:03,806 INFO L225 Difference]: With dead ends: 799 [2023-11-21 21:02:03,806 INFO L226 Difference]: Without dead ends: 682 [2023-11-21 21:02:03,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=166, Invalid=590, Unknown=0, NotChecked=0, Total=756 [2023-11-21 21:02:03,814 INFO L413 NwaCegarLoop]: 227 mSDtfsCounter, 703 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-11-21 21:02:03,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [715 Valid, 909 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-11-21 21:02:03,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2023-11-21 21:02:03,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 638. [2023-11-21 21:02:03,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 453 states have (on average 1.293598233995585) internal successors, (586), 460 states have internal predecessors, (586), 111 states have call successors, (111), 73 states have call predecessors, (111), 72 states have return successors, (135), 106 states have call predecessors, (135), 109 states have call successors, (135) [2023-11-21 21:02:03,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 832 transitions. [2023-11-21 21:02:03,949 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 832 transitions. Word has length 45 [2023-11-21 21:02:03,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:02:03,952 INFO L495 AbstractCegarLoop]: Abstraction has 638 states and 832 transitions. [2023-11-21 21:02:03,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 6 states have internal predecessors, (30), 4 states have call successors, (8), 5 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-21 21:02:03,952 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 832 transitions. [2023-11-21 21:02:03,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-11-21 21:02:03,955 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:03,956 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:03,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 21:02:03,956 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:02:03,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:03,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1733252916, now seen corresponding path program 1 times [2023-11-21 21:02:03,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:03,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998796022] [2023-11-21 21:02:03,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:03,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:03,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:04,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:02:04,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:04,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:02:04,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:04,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 21:02:04,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:04,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:02:04,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:04,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-21 21:02:04,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:04,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-21 21:02:04,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:04,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-21 21:02:04,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:04,242 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 21:02:04,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:04,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998796022] [2023-11-21 21:02:04,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998796022] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:04,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:04,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-21 21:02:04,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990333464] [2023-11-21 21:02:04,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:04,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 21:02:04,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:04,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 21:02:04,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-21 21:02:04,245 INFO L87 Difference]: Start difference. First operand 638 states and 832 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 6 states have internal predecessors, (31), 5 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-21 21:02:04,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:02:04,954 INFO L93 Difference]: Finished difference Result 1240 states and 1570 transitions. [2023-11-21 21:02:04,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-21 21:02:04,955 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 6 states have internal predecessors, (31), 5 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 46 [2023-11-21 21:02:04,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:02:04,961 INFO L225 Difference]: With dead ends: 1240 [2023-11-21 21:02:04,961 INFO L226 Difference]: Without dead ends: 878 [2023-11-21 21:02:04,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2023-11-21 21:02:04,970 INFO L413 NwaCegarLoop]: 117 mSDtfsCounter, 499 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 186 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 186 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 21:02:04,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [520 Valid, 504 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [186 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 21:02:04,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2023-11-21 21:02:05,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 874. [2023-11-21 21:02:05,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 616 states have (on average 1.2727272727272727) internal successors, (784), 623 states have internal predecessors, (784), 150 states have call successors, (150), 107 states have call predecessors, (150), 106 states have return successors, (183), 145 states have call predecessors, (183), 148 states have call successors, (183) [2023-11-21 21:02:05,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1117 transitions. [2023-11-21 21:02:05,142 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1117 transitions. Word has length 46 [2023-11-21 21:02:05,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:02:05,144 INFO L495 AbstractCegarLoop]: Abstraction has 874 states and 1117 transitions. [2023-11-21 21:02:05,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 6 states have internal predecessors, (31), 5 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-21 21:02:05,145 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1117 transitions. [2023-11-21 21:02:05,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-11-21 21:02:05,148 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:05,149 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:05,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 21:02:05,149 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:02:05,150 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:05,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1420471490, now seen corresponding path program 1 times [2023-11-21 21:02:05,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:05,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824887673] [2023-11-21 21:02:05,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:05,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:05,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:05,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:02:05,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:05,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:02:05,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:05,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 21:02:05,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:05,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:02:05,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:05,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-21 21:02:05,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:05,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-21 21:02:05,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:05,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-21 21:02:05,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:05,287 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 21:02:05,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:05,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824887673] [2023-11-21 21:02:05,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824887673] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:05,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:05,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 21:02:05,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270792847] [2023-11-21 21:02:05,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:05,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 21:02:05,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:05,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 21:02:05,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-21 21:02:05,290 INFO L87 Difference]: Start difference. First operand 874 states and 1117 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-21 21:02:05,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:02:05,876 INFO L93 Difference]: Finished difference Result 1685 states and 2103 transitions. [2023-11-21 21:02:05,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 21:02:05,876 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 47 [2023-11-21 21:02:05,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:02:05,885 INFO L225 Difference]: With dead ends: 1685 [2023-11-21 21:02:05,885 INFO L226 Difference]: Without dead ends: 1133 [2023-11-21 21:02:05,887 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-21 21:02:05,887 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 178 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 21:02:05,888 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 462 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 21:02:05,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2023-11-21 21:02:06,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 1111. [2023-11-21 21:02:06,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 777 states have (on average 1.2548262548262548) internal successors, (975), 784 states have internal predecessors, (975), 192 states have call successors, (192), 145 states have call predecessors, (192), 140 states have return successors, (229), 183 states have call predecessors, (229), 190 states have call successors, (229) [2023-11-21 21:02:06,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1396 transitions. [2023-11-21 21:02:06,074 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1396 transitions. Word has length 47 [2023-11-21 21:02:06,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:02:06,075 INFO L495 AbstractCegarLoop]: Abstraction has 1111 states and 1396 transitions. [2023-11-21 21:02:06,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 3 states have internal predecessors, (32), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-21 21:02:06,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1396 transitions. [2023-11-21 21:02:06,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-21 21:02:06,077 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:06,077 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:06,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-21 21:02:06,077 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:02:06,078 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:06,078 INFO L85 PathProgramCache]: Analyzing trace with hash -493605484, now seen corresponding path program 1 times [2023-11-21 21:02:06,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:06,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851141405] [2023-11-21 21:02:06,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:06,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:06,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:06,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:02:06,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:06,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:02:06,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:06,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 21:02:06,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:06,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:02:06,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:06,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-21 21:02:06,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:06,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-21 21:02:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:06,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-21 21:02:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:06,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 21:02:06,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:06,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851141405] [2023-11-21 21:02:06,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851141405] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:06,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:06,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 21:02:06,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777929395] [2023-11-21 21:02:06,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:06,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 21:02:06,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:06,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 21:02:06,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-21 21:02:06,171 INFO L87 Difference]: Start difference. First operand 1111 states and 1396 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-21 21:02:06,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:02:06,680 INFO L93 Difference]: Finished difference Result 1572 states and 1947 transitions. [2023-11-21 21:02:06,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 21:02:06,680 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 53 [2023-11-21 21:02:06,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:02:06,687 INFO L225 Difference]: With dead ends: 1572 [2023-11-21 21:02:06,687 INFO L226 Difference]: Without dead ends: 968 [2023-11-21 21:02:06,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-21 21:02:06,690 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 321 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 21:02:06,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 329 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 21:02:06,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2023-11-21 21:02:06,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 942. [2023-11-21 21:02:06,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 664 states have (on average 1.2439759036144578) internal successors, (826), 671 states have internal predecessors, (826), 162 states have call successors, (162), 119 states have call predecessors, (162), 114 states have return successors, (185), 153 states have call predecessors, (185), 160 states have call successors, (185) [2023-11-21 21:02:06,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1173 transitions. [2023-11-21 21:02:06,824 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1173 transitions. Word has length 53 [2023-11-21 21:02:06,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:02:06,824 INFO L495 AbstractCegarLoop]: Abstraction has 942 states and 1173 transitions. [2023-11-21 21:02:06,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 3 states have internal predecessors, (37), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2023-11-21 21:02:06,825 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1173 transitions. [2023-11-21 21:02:06,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-21 21:02:06,826 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:06,827 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:06,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-21 21:02:06,827 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:02:06,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:06,828 INFO L85 PathProgramCache]: Analyzing trace with hash -2016316846, now seen corresponding path program 1 times [2023-11-21 21:02:06,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:06,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781017835] [2023-11-21 21:02:06,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:06,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:06,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:06,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:02:06,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:06,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:02:06,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:06,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 21:02:06,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:06,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:02:06,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:06,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-21 21:02:06,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:06,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-21 21:02:06,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:06,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-21 21:02:06,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:06,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:02:06,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:06,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781017835] [2023-11-21 21:02:06,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781017835] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:06,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:06,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-21 21:02:06,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981933961] [2023-11-21 21:02:06,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:06,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 21:02:06,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:06,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 21:02:06,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-11-21 21:02:06,984 INFO L87 Difference]: Start difference. First operand 942 states and 1173 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-21 21:02:07,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:02:07,627 INFO L93 Difference]: Finished difference Result 1197 states and 1472 transitions. [2023-11-21 21:02:07,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-21 21:02:07,627 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 54 [2023-11-21 21:02:07,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:02:07,635 INFO L225 Difference]: With dead ends: 1197 [2023-11-21 21:02:07,636 INFO L226 Difference]: Without dead ends: 1194 [2023-11-21 21:02:07,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2023-11-21 21:02:07,637 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 482 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 21:02:07,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [488 Valid, 312 Invalid, 464 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 21:02:07,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2023-11-21 21:02:07,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 941. [2023-11-21 21:02:07,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 664 states have (on average 1.233433734939759) internal successors, (819), 670 states have internal predecessors, (819), 161 states have call successors, (161), 119 states have call predecessors, (161), 114 states have return successors, (185), 153 states have call predecessors, (185), 160 states have call successors, (185) [2023-11-21 21:02:07,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 1165 transitions. [2023-11-21 21:02:07,797 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 1165 transitions. Word has length 54 [2023-11-21 21:02:07,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:02:07,798 INFO L495 AbstractCegarLoop]: Abstraction has 941 states and 1165 transitions. [2023-11-21 21:02:07,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-21 21:02:07,798 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 1165 transitions. [2023-11-21 21:02:07,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-21 21:02:07,800 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:07,800 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:07,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-21 21:02:07,800 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:02:07,801 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:07,801 INFO L85 PathProgramCache]: Analyzing trace with hash 1917984295, now seen corresponding path program 1 times [2023-11-21 21:02:07,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:07,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720617624] [2023-11-21 21:02:07,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:07,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:07,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:07,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:02:07,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:07,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:02:07,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:07,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 21:02:07,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:07,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:02:07,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:07,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-21 21:02:07,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:07,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-21 21:02:07,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:07,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-21 21:02:07,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:07,977 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:02:07,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:07,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720617624] [2023-11-21 21:02:07,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720617624] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:02:07,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1575353128] [2023-11-21 21:02:07,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:07,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:02:07,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:02:07,981 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:02:08,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-21 21:02:08,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:08,121 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 21:02:08,128 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:02:08,421 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:02:08,422 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-21 21:02:08,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:02:08,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1575353128] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-21 21:02:08,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-21 21:02:08,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2023-11-21 21:02:08,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276987394] [2023-11-21 21:02:08,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-21 21:02:08,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-21 21:02:08,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:08,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-21 21:02:08,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-11-21 21:02:08,538 INFO L87 Difference]: Start difference. First operand 941 states and 1165 transitions. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 7 states have internal predecessors, (83), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-21 21:02:10,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:02:10,096 INFO L93 Difference]: Finished difference Result 2170 states and 2606 transitions. [2023-11-21 21:02:10,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2023-11-21 21:02:10,096 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 7 states have internal predecessors, (83), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 55 [2023-11-21 21:02:10,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:02:10,111 INFO L225 Difference]: With dead ends: 2170 [2023-11-21 21:02:10,112 INFO L226 Difference]: Without dead ends: 2167 [2023-11-21 21:02:10,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=140, Invalid=510, Unknown=0, NotChecked=0, Total=650 [2023-11-21 21:02:10,118 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 547 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 979 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 591 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 1145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 979 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-21 21:02:10,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [591 Valid, 830 Invalid, 1145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 979 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-21 21:02:10,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2167 states. [2023-11-21 21:02:10,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2167 to 1714. [2023-11-21 21:02:10,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1714 states, 1195 states have (on average 1.2167364016736402) internal successors, (1454), 1201 states have internal predecessors, (1454), 293 states have call successors, (293), 237 states have call predecessors, (293), 224 states have return successors, (329), 277 states have call predecessors, (329), 292 states have call successors, (329) [2023-11-21 21:02:10,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1714 states to 1714 states and 2076 transitions. [2023-11-21 21:02:10,488 INFO L78 Accepts]: Start accepts. Automaton has 1714 states and 2076 transitions. Word has length 55 [2023-11-21 21:02:10,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:02:10,489 INFO L495 AbstractCegarLoop]: Abstraction has 1714 states and 2076 transitions. [2023-11-21 21:02:10,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 7 states have internal predecessors, (83), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2023-11-21 21:02:10,489 INFO L276 IsEmpty]: Start isEmpty. Operand 1714 states and 2076 transitions. [2023-11-21 21:02:10,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-21 21:02:10,491 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:10,491 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:10,507 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-21 21:02:10,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:02:10,700 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:02:10,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:10,700 INFO L85 PathProgramCache]: Analyzing trace with hash 1823898130, now seen corresponding path program 2 times [2023-11-21 21:02:10,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:10,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140440095] [2023-11-21 21:02:10,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:10,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:10,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:10,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:02:10,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:10,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:02:10,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:10,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 21:02:10,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:10,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:02:10,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:10,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-21 21:02:10,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:10,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-21 21:02:10,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:10,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-21 21:02:10,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:10,799 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 21:02:10,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:10,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140440095] [2023-11-21 21:02:10,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [140440095] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:10,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:10,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 21:02:10,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621843826] [2023-11-21 21:02:10,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:10,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 21:02:10,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:10,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 21:02:10,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-21 21:02:10,802 INFO L87 Difference]: Start difference. First operand 1714 states and 2076 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-21 21:02:11,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:02:11,436 INFO L93 Difference]: Finished difference Result 2406 states and 2882 transitions. [2023-11-21 21:02:11,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 21:02:11,437 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 58 [2023-11-21 21:02:11,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:02:11,445 INFO L225 Difference]: With dead ends: 2406 [2023-11-21 21:02:11,445 INFO L226 Difference]: Without dead ends: 1260 [2023-11-21 21:02:11,448 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-21 21:02:11,449 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 241 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 21:02:11,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 462 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 21:02:11,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1260 states. [2023-11-21 21:02:11,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1260 to 1250. [2023-11-21 21:02:11,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1250 states, 883 states have (on average 1.2061155152887881) internal successors, (1065), 889 states have internal predecessors, (1065), 209 states have call successors, (209), 161 states have call predecessors, (209), 156 states have return successors, (237), 201 states have call predecessors, (237), 208 states have call successors, (237) [2023-11-21 21:02:11,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1250 states to 1250 states and 1511 transitions. [2023-11-21 21:02:11,688 INFO L78 Accepts]: Start accepts. Automaton has 1250 states and 1511 transitions. Word has length 58 [2023-11-21 21:02:11,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:02:11,690 INFO L495 AbstractCegarLoop]: Abstraction has 1250 states and 1511 transitions. [2023-11-21 21:02:11,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-21 21:02:11,690 INFO L276 IsEmpty]: Start isEmpty. Operand 1250 states and 1511 transitions. [2023-11-21 21:02:11,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-21 21:02:11,692 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:11,692 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:11,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-21 21:02:11,692 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:02:11,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:11,693 INFO L85 PathProgramCache]: Analyzing trace with hash -2046508944, now seen corresponding path program 1 times [2023-11-21 21:02:11,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:11,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088446663] [2023-11-21 21:02:11,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:11,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:11,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:11,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:02:11,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:11,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:02:11,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:11,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 21:02:11,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:11,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:02:11,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:11,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-21 21:02:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:11,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-21 21:02:11,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:11,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-21 21:02:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:11,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-21 21:02:11,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:11,792 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 21:02:11,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:11,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088446663] [2023-11-21 21:02:11,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088446663] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:11,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:11,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 21:02:11,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038764622] [2023-11-21 21:02:11,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:11,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 21:02:11,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:11,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 21:02:11,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-21 21:02:11,795 INFO L87 Difference]: Start difference. First operand 1250 states and 1511 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-21 21:02:12,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:02:12,535 INFO L93 Difference]: Finished difference Result 2100 states and 2495 transitions. [2023-11-21 21:02:12,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 21:02:12,535 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 61 [2023-11-21 21:02:12,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:02:12,545 INFO L225 Difference]: With dead ends: 2100 [2023-11-21 21:02:12,545 INFO L226 Difference]: Without dead ends: 1569 [2023-11-21 21:02:12,547 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-11-21 21:02:12,548 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 177 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 21:02:12,549 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [180 Valid, 422 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 21:02:12,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2023-11-21 21:02:12,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1404. [2023-11-21 21:02:12,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1404 states, 991 states have (on average 1.199798183652876) internal successors, (1189), 1001 states have internal predecessors, (1189), 234 states have call successors, (234), 186 states have call predecessors, (234), 177 states have return successors, (262), 218 states have call predecessors, (262), 233 states have call successors, (262) [2023-11-21 21:02:12,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 1685 transitions. [2023-11-21 21:02:12,791 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 1685 transitions. Word has length 61 [2023-11-21 21:02:12,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:02:12,791 INFO L495 AbstractCegarLoop]: Abstraction has 1404 states and 1685 transitions. [2023-11-21 21:02:12,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-21 21:02:12,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 1685 transitions. [2023-11-21 21:02:12,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-21 21:02:12,794 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:12,794 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:12,794 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-21 21:02:12,795 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:02:12,795 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:12,795 INFO L85 PathProgramCache]: Analyzing trace with hash -530613981, now seen corresponding path program 1 times [2023-11-21 21:02:12,795 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:12,795 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958335253] [2023-11-21 21:02:12,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:12,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:12,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:13,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:02:13,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:13,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:02:13,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:13,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 21:02:13,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:13,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-21 21:02:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:13,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-21 21:02:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:13,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-21 21:02:13,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:13,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-21 21:02:13,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:13,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-11-21 21:02:13,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:13,150 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-21 21:02:13,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:13,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958335253] [2023-11-21 21:02:13,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958335253] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:13,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:13,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-21 21:02:13,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620118055] [2023-11-21 21:02:13,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:13,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 21:02:13,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:13,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 21:02:13,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-21 21:02:13,153 INFO L87 Difference]: Start difference. First operand 1404 states and 1685 transitions. Second operand has 8 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-21 21:02:14,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:02:14,053 INFO L93 Difference]: Finished difference Result 1908 states and 2378 transitions. [2023-11-21 21:02:14,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-21 21:02:14,053 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 67 [2023-11-21 21:02:14,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:02:14,063 INFO L225 Difference]: With dead ends: 1908 [2023-11-21 21:02:14,063 INFO L226 Difference]: Without dead ends: 1644 [2023-11-21 21:02:14,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2023-11-21 21:02:14,066 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 367 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 388 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 21:02:14,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [388 Valid, 510 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 21:02:14,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1644 states. [2023-11-21 21:02:14,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1644 to 1642. [2023-11-21 21:02:14,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1642 states, 1163 states have (on average 1.2132416165090283) internal successors, (1411), 1176 states have internal predecessors, (1411), 276 states have call successors, (276), 210 states have call predecessors, (276), 201 states have return successors, (318), 257 states have call predecessors, (318), 275 states have call successors, (318) [2023-11-21 21:02:14,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1642 states to 1642 states and 2005 transitions. [2023-11-21 21:02:14,380 INFO L78 Accepts]: Start accepts. Automaton has 1642 states and 2005 transitions. Word has length 67 [2023-11-21 21:02:14,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:02:14,380 INFO L495 AbstractCegarLoop]: Abstraction has 1642 states and 2005 transitions. [2023-11-21 21:02:14,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.0) internal successors, (40), 6 states have internal predecessors, (40), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-21 21:02:14,381 INFO L276 IsEmpty]: Start isEmpty. Operand 1642 states and 2005 transitions. [2023-11-21 21:02:14,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-21 21:02:14,383 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:14,384 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:14,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-21 21:02:14,384 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:02:14,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:14,385 INFO L85 PathProgramCache]: Analyzing trace with hash -113326818, now seen corresponding path program 1 times [2023-11-21 21:02:14,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:14,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531960433] [2023-11-21 21:02:14,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:14,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:14,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:14,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:02:14,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:14,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:02:14,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:14,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 21:02:14,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:14,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-21 21:02:14,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:14,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-21 21:02:14,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:14,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-21 21:02:14,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:14,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-21 21:02:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:14,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-21 21:02:14,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:14,503 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-21 21:02:14,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:14,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531960433] [2023-11-21 21:02:14,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531960433] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:14,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:14,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 21:02:14,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015622750] [2023-11-21 21:02:14,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:14,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 21:02:14,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:14,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 21:02:14,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 21:02:14,506 INFO L87 Difference]: Start difference. First operand 1642 states and 2005 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-21 21:02:15,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:02:15,174 INFO L93 Difference]: Finished difference Result 2097 states and 2654 transitions. [2023-11-21 21:02:15,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 21:02:15,175 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 69 [2023-11-21 21:02:15,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:02:15,185 INFO L225 Difference]: With dead ends: 2097 [2023-11-21 21:02:15,186 INFO L226 Difference]: Without dead ends: 1715 [2023-11-21 21:02:15,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-21 21:02:15,189 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 117 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 21:02:15,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 438 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 21:02:15,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1715 states. [2023-11-21 21:02:15,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1715 to 1678. [2023-11-21 21:02:15,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1678 states, 1195 states have (on average 1.2192468619246861) internal successors, (1457), 1208 states have internal predecessors, (1457), 278 states have call successors, (278), 212 states have call predecessors, (278), 203 states have return successors, (320), 259 states have call predecessors, (320), 277 states have call successors, (320) [2023-11-21 21:02:15,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1678 states to 1678 states and 2055 transitions. [2023-11-21 21:02:15,582 INFO L78 Accepts]: Start accepts. Automaton has 1678 states and 2055 transitions. Word has length 69 [2023-11-21 21:02:15,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:02:15,582 INFO L495 AbstractCegarLoop]: Abstraction has 1678 states and 2055 transitions. [2023-11-21 21:02:15,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2023-11-21 21:02:15,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1678 states and 2055 transitions. [2023-11-21 21:02:15,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-11-21 21:02:15,585 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:15,585 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:15,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-21 21:02:15,586 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:02:15,586 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:15,586 INFO L85 PathProgramCache]: Analyzing trace with hash 2089699845, now seen corresponding path program 1 times [2023-11-21 21:02:15,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:15,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059685382] [2023-11-21 21:02:15,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:15,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:15,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:15,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:02:15,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:15,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:02:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:15,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 21:02:15,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:15,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:02:15,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:15,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-21 21:02:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:15,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-21 21:02:15,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:15,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-21 21:02:15,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:15,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-21 21:02:15,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:15,833 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-21 21:02:15,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:15,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059685382] [2023-11-21 21:02:15,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059685382] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:15,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:15,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-21 21:02:15,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744884093] [2023-11-21 21:02:15,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:15,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-21 21:02:15,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:15,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-21 21:02:15,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-11-21 21:02:15,836 INFO L87 Difference]: Start difference. First operand 1678 states and 2055 transitions. Second operand has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-21 21:02:16,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:02:16,701 INFO L93 Difference]: Finished difference Result 3212 states and 3808 transitions. [2023-11-21 21:02:16,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-11-21 21:02:16,702 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 70 [2023-11-21 21:02:16,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:02:16,715 INFO L225 Difference]: With dead ends: 3212 [2023-11-21 21:02:16,715 INFO L226 Difference]: Without dead ends: 2084 [2023-11-21 21:02:16,718 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2023-11-21 21:02:16,719 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 422 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 443 SdHoareTripleChecker+Valid, 458 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 21:02:16,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [443 Valid, 458 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 21:02:16,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2084 states. [2023-11-21 21:02:17,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2084 to 2084. [2023-11-21 21:02:17,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2084 states, 1466 states have (on average 1.195088676671214) internal successors, (1752), 1479 states have internal predecessors, (1752), 350 states have call successors, (350), 275 states have call predecessors, (350), 266 states have return successors, (392), 331 states have call predecessors, (392), 349 states have call successors, (392) [2023-11-21 21:02:17,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2084 states to 2084 states and 2494 transitions. [2023-11-21 21:02:17,132 INFO L78 Accepts]: Start accepts. Automaton has 2084 states and 2494 transitions. Word has length 70 [2023-11-21 21:02:17,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:02:17,133 INFO L495 AbstractCegarLoop]: Abstraction has 2084 states and 2494 transitions. [2023-11-21 21:02:17,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-21 21:02:17,133 INFO L276 IsEmpty]: Start isEmpty. Operand 2084 states and 2494 transitions. [2023-11-21 21:02:17,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-11-21 21:02:17,136 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:17,136 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:17,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-21 21:02:17,136 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:02:17,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:17,137 INFO L85 PathProgramCache]: Analyzing trace with hash 116827474, now seen corresponding path program 1 times [2023-11-21 21:02:17,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:17,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279524653] [2023-11-21 21:02:17,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:17,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:17,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:17,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:02:17,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:17,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:02:17,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:17,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 21:02:17,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:17,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:02:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:17,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-21 21:02:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:17,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-21 21:02:17,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:17,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-21 21:02:17,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:17,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-21 21:02:17,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:17,238 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-21 21:02:17,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:17,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279524653] [2023-11-21 21:02:17,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279524653] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:17,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:17,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-21 21:02:17,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192209807] [2023-11-21 21:02:17,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:17,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 21:02:17,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:17,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 21:02:17,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-11-21 21:02:17,242 INFO L87 Difference]: Start difference. First operand 2084 states and 2494 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-21 21:02:17,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:02:17,994 INFO L93 Difference]: Finished difference Result 3681 states and 4314 transitions. [2023-11-21 21:02:17,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 21:02:17,995 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 71 [2023-11-21 21:02:17,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:02:18,009 INFO L225 Difference]: With dead ends: 3681 [2023-11-21 21:02:18,009 INFO L226 Difference]: Without dead ends: 2302 [2023-11-21 21:02:18,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-21 21:02:18,014 INFO L413 NwaCegarLoop]: 149 mSDtfsCounter, 128 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 21:02:18,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 510 Invalid, 417 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 21:02:18,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2302 states. [2023-11-21 21:02:18,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2302 to 2221. [2023-11-21 21:02:18,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2221 states, 1563 states have (on average 1.1925783749200256) internal successors, (1864), 1582 states have internal predecessors, (1864), 371 states have call successors, (371), 296 states have call predecessors, (371), 285 states have return successors, (419), 344 states have call predecessors, (419), 370 states have call successors, (419) [2023-11-21 21:02:18,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2221 states to 2221 states and 2654 transitions. [2023-11-21 21:02:18,572 INFO L78 Accepts]: Start accepts. Automaton has 2221 states and 2654 transitions. Word has length 71 [2023-11-21 21:02:18,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:02:18,573 INFO L495 AbstractCegarLoop]: Abstraction has 2221 states and 2654 transitions. [2023-11-21 21:02:18,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-21 21:02:18,573 INFO L276 IsEmpty]: Start isEmpty. Operand 2221 states and 2654 transitions. [2023-11-21 21:02:18,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-21 21:02:18,577 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:18,577 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:18,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-11-21 21:02:18,578 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:02:18,578 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:18,578 INFO L85 PathProgramCache]: Analyzing trace with hash -312747044, now seen corresponding path program 1 times [2023-11-21 21:02:18,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:18,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477914095] [2023-11-21 21:02:18,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:18,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:18,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:18,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:02:18,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:18,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:02:18,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:18,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 21:02:18,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:18,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-21 21:02:18,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:18,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-21 21:02:18,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:18,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-21 21:02:18,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:18,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-21 21:02:18,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:18,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-21 21:02:18,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:18,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-21 21:02:18,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:18,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2023-11-21 21:02:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:18,741 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-21 21:02:18,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:18,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477914095] [2023-11-21 21:02:18,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477914095] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:18,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:18,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 21:02:18,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252139112] [2023-11-21 21:02:18,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:18,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 21:02:18,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:18,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 21:02:18,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 21:02:18,746 INFO L87 Difference]: Start difference. First operand 2221 states and 2654 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-21 21:02:19,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:02:19,584 INFO L93 Difference]: Finished difference Result 3027 states and 3786 transitions. [2023-11-21 21:02:19,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 21:02:19,584 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 88 [2023-11-21 21:02:19,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:02:19,600 INFO L225 Difference]: With dead ends: 3027 [2023-11-21 21:02:19,600 INFO L226 Difference]: Without dead ends: 2488 [2023-11-21 21:02:19,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-21 21:02:19,604 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 237 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 344 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-21 21:02:19,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 344 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-21 21:02:19,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2488 states. [2023-11-21 21:02:20,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2488 to 2481. [2023-11-21 21:02:20,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2481 states, 1755 states have (on average 1.2011396011396012) internal successors, (2108), 1777 states have internal predecessors, (2108), 414 states have call successors, (414), 321 states have call predecessors, (414), 310 states have return successors, (476), 384 states have call predecessors, (476), 413 states have call successors, (476) [2023-11-21 21:02:20,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2481 states to 2481 states and 2998 transitions. [2023-11-21 21:02:20,231 INFO L78 Accepts]: Start accepts. Automaton has 2481 states and 2998 transitions. Word has length 88 [2023-11-21 21:02:20,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:02:20,232 INFO L495 AbstractCegarLoop]: Abstraction has 2481 states and 2998 transitions. [2023-11-21 21:02:20,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-21 21:02:20,233 INFO L276 IsEmpty]: Start isEmpty. Operand 2481 states and 2998 transitions. [2023-11-21 21:02:20,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2023-11-21 21:02:20,237 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:20,237 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:20,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-11-21 21:02:20,238 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:02:20,238 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:20,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1796356139, now seen corresponding path program 1 times [2023-11-21 21:02:20,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:20,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137449780] [2023-11-21 21:02:20,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:20,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:20,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:20,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:02:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:20,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:02:20,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:20,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 21:02:20,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:20,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-21 21:02:20,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:20,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-21 21:02:20,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:20,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-21 21:02:20,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:20,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-21 21:02:20,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:20,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2023-11-21 21:02:20,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:20,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-21 21:02:20,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:20,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-21 21:02:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:20,384 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-21 21:02:20,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:20,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137449780] [2023-11-21 21:02:20,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137449780] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:20,385 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:02:20,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-21 21:02:20,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181940697] [2023-11-21 21:02:20,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:20,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-21 21:02:20,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:20,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-21 21:02:20,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-21 21:02:20,388 INFO L87 Difference]: Start difference. First operand 2481 states and 2998 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-21 21:02:21,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:02:21,258 INFO L93 Difference]: Finished difference Result 3522 states and 4455 transitions. [2023-11-21 21:02:21,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 21:02:21,258 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 90 [2023-11-21 21:02:21,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:02:21,276 INFO L225 Difference]: With dead ends: 3522 [2023-11-21 21:02:21,277 INFO L226 Difference]: Without dead ends: 2899 [2023-11-21 21:02:21,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-11-21 21:02:21,281 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 246 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 316 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 21:02:21,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 316 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 21:02:21,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2899 states. [2023-11-21 21:02:21,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2899 to 2885. [2023-11-21 21:02:21,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2885 states, 2055 states have (on average 1.2121654501216546) internal successors, (2491), 2080 states have internal predecessors, (2491), 479 states have call successors, (479), 360 states have call predecessors, (479), 349 states have return successors, (554), 446 states have call predecessors, (554), 478 states have call successors, (554) [2023-11-21 21:02:21,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2885 states to 2885 states and 3524 transitions. [2023-11-21 21:02:21,840 INFO L78 Accepts]: Start accepts. Automaton has 2885 states and 3524 transitions. Word has length 90 [2023-11-21 21:02:21,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:02:21,841 INFO L495 AbstractCegarLoop]: Abstraction has 2885 states and 3524 transitions. [2023-11-21 21:02:21,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 3 states have internal predecessors, (52), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-21 21:02:21,841 INFO L276 IsEmpty]: Start isEmpty. Operand 2885 states and 3524 transitions. [2023-11-21 21:02:21,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-11-21 21:02:21,847 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:21,847 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:02:21,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-11-21 21:02:21,848 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:02:21,848 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:21,848 INFO L85 PathProgramCache]: Analyzing trace with hash 913647151, now seen corresponding path program 1 times [2023-11-21 21:02:21,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:21,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809514895] [2023-11-21 21:02:21,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:21,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:21,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:22,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:02:22,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:22,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:02:22,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:22,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 21:02:22,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:22,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:02:22,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:22,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-21 21:02:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:22,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-21 21:02:22,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:22,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-21 21:02:22,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:22,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-21 21:02:22,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:22,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-21 21:02:22,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:22,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-21 21:02:22,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:22,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-21 21:02:22,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:22,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:02:22,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:22,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-21 21:02:22,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:22,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-11-21 21:02:22,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:22,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-11-21 21:02:22,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:22,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2023-11-21 21:02:22,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:22,250 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 15 proven. 9 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-11-21 21:02:22,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:22,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809514895] [2023-11-21 21:02:22,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809514895] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:02:22,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1523670898] [2023-11-21 21:02:22,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:22,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:02:22,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:02:22,252 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:02:22,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-21 21:02:22,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:22,393 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 7 conjunts are in the unsatisfiable core [2023-11-21 21:02:22,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:02:22,473 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-21 21:02:22,474 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:02:22,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1523670898] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:22,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 21:02:22,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 16 [2023-11-21 21:02:22,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132680979] [2023-11-21 21:02:22,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:22,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 21:02:22,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:22,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 21:02:22,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2023-11-21 21:02:22,477 INFO L87 Difference]: Start difference. First operand 2885 states and 3524 transitions. Second operand has 6 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-21 21:02:23,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:02:23,130 INFO L93 Difference]: Finished difference Result 4288 states and 5166 transitions. [2023-11-21 21:02:23,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-21 21:02:23,131 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 102 [2023-11-21 21:02:23,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:02:23,148 INFO L225 Difference]: With dead ends: 4288 [2023-11-21 21:02:23,149 INFO L226 Difference]: Without dead ends: 2617 [2023-11-21 21:02:23,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2023-11-21 21:02:23,154 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 167 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 21:02:23,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 782 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 21:02:23,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2617 states. [2023-11-21 21:02:23,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2617 to 2341. [2023-11-21 21:02:23,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2341 states, 1714 states have (on average 1.2281213535589266) internal successors, (2105), 1737 states have internal predecessors, (2105), 368 states have call successors, (368), 264 states have call predecessors, (368), 257 states have return successors, (437), 341 states have call predecessors, (437), 367 states have call successors, (437) [2023-11-21 21:02:23,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2341 states to 2341 states and 2910 transitions. [2023-11-21 21:02:23,604 INFO L78 Accepts]: Start accepts. Automaton has 2341 states and 2910 transitions. Word has length 102 [2023-11-21 21:02:23,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:02:23,604 INFO L495 AbstractCegarLoop]: Abstraction has 2341 states and 2910 transitions. [2023-11-21 21:02:23,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-21 21:02:23,605 INFO L276 IsEmpty]: Start isEmpty. Operand 2341 states and 2910 transitions. [2023-11-21 21:02:23,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-21 21:02:23,611 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:23,611 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:23,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-21 21:02:23,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-11-21 21:02:23,833 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:02:23,833 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:23,833 INFO L85 PathProgramCache]: Analyzing trace with hash 997295754, now seen corresponding path program 1 times [2023-11-21 21:02:23,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:23,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916972435] [2023-11-21 21:02:23,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:23,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:23,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:23,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:02:23,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:23,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:02:23,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:23,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 21:02:23,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:24,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-21 21:02:24,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:24,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-21 21:02:24,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:24,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-21 21:02:24,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:24,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-21 21:02:24,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:24,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-21 21:02:24,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:24,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-21 21:02:24,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:24,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-21 21:02:24,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:24,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-21 21:02:24,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:24,037 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-11-21 21:02:24,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:24,037 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916972435] [2023-11-21 21:02:24,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916972435] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:02:24,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843225633] [2023-11-21 21:02:24,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:24,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:02:24,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:02:24,039 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:02:24,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-21 21:02:24,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:24,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 21:02:24,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:02:24,212 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-21 21:02:24,212 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:02:24,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843225633] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:24,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 21:02:24,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-11-21 21:02:24,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101849139] [2023-11-21 21:02:24,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:24,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:02:24,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:24,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:02:24,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-21 21:02:24,215 INFO L87 Difference]: Start difference. First operand 2341 states and 2910 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-21 21:02:24,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:02:24,647 INFO L93 Difference]: Finished difference Result 3423 states and 4393 transitions. [2023-11-21 21:02:24,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:02:24,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 101 [2023-11-21 21:02:24,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:02:24,664 INFO L225 Difference]: With dead ends: 3423 [2023-11-21 21:02:24,664 INFO L226 Difference]: Without dead ends: 2613 [2023-11-21 21:02:24,668 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-21 21:02:24,669 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 53 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 21:02:24,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 374 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 21:02:24,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2613 states. [2023-11-21 21:02:25,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2613 to 2453. [2023-11-21 21:02:25,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2453 states, 1810 states have (on average 1.2392265193370167) internal successors, (2243), 1833 states have internal predecessors, (2243), 376 states have call successors, (376), 272 states have call predecessors, (376), 265 states have return successors, (445), 349 states have call predecessors, (445), 375 states have call successors, (445) [2023-11-21 21:02:25,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2453 states to 2453 states and 3064 transitions. [2023-11-21 21:02:25,149 INFO L78 Accepts]: Start accepts. Automaton has 2453 states and 3064 transitions. Word has length 101 [2023-11-21 21:02:25,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:02:25,150 INFO L495 AbstractCegarLoop]: Abstraction has 2453 states and 3064 transitions. [2023-11-21 21:02:25,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-21 21:02:25,150 INFO L276 IsEmpty]: Start isEmpty. Operand 2453 states and 3064 transitions. [2023-11-21 21:02:25,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-21 21:02:25,156 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:25,157 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:25,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-21 21:02:25,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-11-21 21:02:25,378 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:02:25,379 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:25,379 INFO L85 PathProgramCache]: Analyzing trace with hash -982830524, now seen corresponding path program 2 times [2023-11-21 21:02:25,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:25,379 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697721728] [2023-11-21 21:02:25,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:25,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:25,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:25,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:02:25,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:25,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:02:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:25,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 21:02:25,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:25,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-21 21:02:25,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:25,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-21 21:02:25,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:25,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-21 21:02:25,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:25,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-21 21:02:25,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:25,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-21 21:02:25,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:25,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-21 21:02:25,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:25,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-21 21:02:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:25,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-21 21:02:25,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:25,665 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 10 proven. 19 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-21 21:02:25,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:25,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697721728] [2023-11-21 21:02:25,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697721728] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:02:25,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195078214] [2023-11-21 21:02:25,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-21 21:02:25,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:02:25,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:02:25,667 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:02:25,691 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-21 21:02:25,803 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-21 21:02:25,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-21 21:02:25,806 INFO L262 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 21:02:25,813 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:02:25,889 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-21 21:02:25,889 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:02:25,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [195078214] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:25,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 21:02:25,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-11-21 21:02:25,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653998750] [2023-11-21 21:02:25,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:25,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:02:25,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:25,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:02:25,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-21 21:02:25,894 INFO L87 Difference]: Start difference. First operand 2453 states and 3064 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-21 21:02:26,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:02:26,482 INFO L93 Difference]: Finished difference Result 3383 states and 4420 transitions. [2023-11-21 21:02:26,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:02:26,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 101 [2023-11-21 21:02:26,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:02:26,510 INFO L225 Difference]: With dead ends: 3383 [2023-11-21 21:02:26,517 INFO L226 Difference]: Without dead ends: 2461 [2023-11-21 21:02:26,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-21 21:02:26,522 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 59 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 361 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 21:02:26,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 361 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 21:02:26,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2461 states. [2023-11-21 21:02:27,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2461 to 2449. [2023-11-21 21:02:27,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2449 states, 1806 states have (on average 1.2242524916943522) internal successors, (2211), 1829 states have internal predecessors, (2211), 376 states have call successors, (376), 272 states have call predecessors, (376), 265 states have return successors, (445), 349 states have call predecessors, (445), 375 states have call successors, (445) [2023-11-21 21:02:27,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2449 states to 2449 states and 3032 transitions. [2023-11-21 21:02:27,118 INFO L78 Accepts]: Start accepts. Automaton has 2449 states and 3032 transitions. Word has length 101 [2023-11-21 21:02:27,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:02:27,118 INFO L495 AbstractCegarLoop]: Abstraction has 2449 states and 3032 transitions. [2023-11-21 21:02:27,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-21 21:02:27,119 INFO L276 IsEmpty]: Start isEmpty. Operand 2449 states and 3032 transitions. [2023-11-21 21:02:27,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-21 21:02:27,124 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:27,125 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:27,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-21 21:02:27,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:02:27,340 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:02:27,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:27,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1265761124, now seen corresponding path program 1 times [2023-11-21 21:02:27,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:27,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392482302] [2023-11-21 21:02:27,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:27,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:27,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:27,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:02:27,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:27,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:02:27,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:27,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 21:02:27,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:27,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-21 21:02:27,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:27,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-21 21:02:27,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:27,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2023-11-21 21:02:27,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:27,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-21 21:02:27,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:27,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-21 21:02:27,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:27,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2023-11-21 21:02:27,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:27,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-21 21:02:27,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:27,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-21 21:02:27,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:27,621 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 17 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-21 21:02:27,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:27,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392482302] [2023-11-21 21:02:27,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392482302] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:02:27,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1936626504] [2023-11-21 21:02:27,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:27,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:02:27,623 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:02:27,624 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:02:27,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-21 21:02:27,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:27,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 21:02:27,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:02:27,799 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-21 21:02:27,799 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:02:27,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1936626504] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:27,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 21:02:27,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2023-11-21 21:02:27,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511491357] [2023-11-21 21:02:27,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:27,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:02:27,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:27,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:02:27,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-21 21:02:27,804 INFO L87 Difference]: Start difference. First operand 2449 states and 3032 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-21 21:02:28,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:02:28,467 INFO L93 Difference]: Finished difference Result 4371 states and 5586 transitions. [2023-11-21 21:02:28,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:02:28,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 101 [2023-11-21 21:02:28,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:02:28,479 INFO L225 Difference]: With dead ends: 4371 [2023-11-21 21:02:28,480 INFO L226 Difference]: Without dead ends: 3061 [2023-11-21 21:02:28,484 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-21 21:02:28,486 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 43 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 330 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 21:02:28,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 330 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 21:02:28,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3061 states. [2023-11-21 21:02:28,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3061 to 2677. [2023-11-21 21:02:28,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2677 states, 1998 states have (on average 1.2367367367367368) internal successors, (2471), 2022 states have internal predecessors, (2471), 394 states have call successors, (394), 290 states have call predecessors, (394), 283 states have return successors, (463), 366 states have call predecessors, (463), 393 states have call successors, (463) [2023-11-21 21:02:28,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2677 states to 2677 states and 3328 transitions. [2023-11-21 21:02:28,960 INFO L78 Accepts]: Start accepts. Automaton has 2677 states and 3328 transitions. Word has length 101 [2023-11-21 21:02:28,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:02:28,961 INFO L495 AbstractCegarLoop]: Abstraction has 2677 states and 3328 transitions. [2023-11-21 21:02:28,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-21 21:02:28,961 INFO L276 IsEmpty]: Start isEmpty. Operand 2677 states and 3328 transitions. [2023-11-21 21:02:28,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-21 21:02:28,968 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:28,968 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:28,989 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-11-21 21:02:29,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:02:29,184 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:02:29,184 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:29,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1690728467, now seen corresponding path program 1 times [2023-11-21 21:02:29,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:29,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686977745] [2023-11-21 21:02:29,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:29,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:29,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:29,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:02:29,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:29,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:02:29,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:29,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 21:02:29,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:29,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-21 21:02:29,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:29,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-21 21:02:29,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:29,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-21 21:02:29,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:29,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-21 21:02:29,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:29,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-21 21:02:29,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:29,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-21 21:02:29,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:29,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-21 21:02:29,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:29,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-21 21:02:29,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:29,400 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 14 proven. 17 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-11-21 21:02:29,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:29,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686977745] [2023-11-21 21:02:29,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686977745] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:02:29,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195119438] [2023-11-21 21:02:29,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:29,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:02:29,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:02:29,402 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:02:29,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-21 21:02:29,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:29,535 INFO L262 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 21:02:29,538 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:02:29,728 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-21 21:02:29,728 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:02:29,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195119438] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:29,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 21:02:29,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 12 [2023-11-21 21:02:29,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954187606] [2023-11-21 21:02:29,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:29,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 21:02:29,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:29,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 21:02:29,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2023-11-21 21:02:29,730 INFO L87 Difference]: Start difference. First operand 2677 states and 3328 transitions. Second operand has 6 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-21 21:02:30,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:02:30,532 INFO L93 Difference]: Finished difference Result 3899 states and 5016 transitions. [2023-11-21 21:02:30,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-21 21:02:30,533 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 103 [2023-11-21 21:02:30,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:02:30,542 INFO L225 Difference]: With dead ends: 3899 [2023-11-21 21:02:30,542 INFO L226 Difference]: Without dead ends: 2833 [2023-11-21 21:02:30,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2023-11-21 21:02:30,547 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 232 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 21:02:30,547 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 331 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 21:02:30,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2833 states. [2023-11-21 21:02:30,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2833 to 2573. [2023-11-21 21:02:30,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2573 states, 1929 states have (on average 1.228615863141524) internal successors, (2370), 1953 states have internal predecessors, (2370), 364 states have call successors, (364), 279 states have call predecessors, (364), 278 states have return successors, (413), 342 states have call predecessors, (413), 363 states have call successors, (413) [2023-11-21 21:02:30,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2573 states to 2573 states and 3147 transitions. [2023-11-21 21:02:31,000 INFO L78 Accepts]: Start accepts. Automaton has 2573 states and 3147 transitions. Word has length 103 [2023-11-21 21:02:31,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:02:31,001 INFO L495 AbstractCegarLoop]: Abstraction has 2573 states and 3147 transitions. [2023-11-21 21:02:31,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2023-11-21 21:02:31,001 INFO L276 IsEmpty]: Start isEmpty. Operand 2573 states and 3147 transitions. [2023-11-21 21:02:31,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-21 21:02:31,009 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:31,010 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:31,036 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-21 21:02:31,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-11-21 21:02:31,229 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:02:31,229 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:31,229 INFO L85 PathProgramCache]: Analyzing trace with hash -816724292, now seen corresponding path program 1 times [2023-11-21 21:02:31,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:31,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381910041] [2023-11-21 21:02:31,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:31,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:31,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:31,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:02:31,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:31,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:02:31,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:31,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 21:02:31,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:31,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-21 21:02:31,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:31,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-21 21:02:31,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:31,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-21 21:02:31,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:31,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-21 21:02:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:31,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-21 21:02:31,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:31,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-21 21:02:31,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:31,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-21 21:02:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:31,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-21 21:02:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:31,405 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2023-11-21 21:02:31,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:31,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381910041] [2023-11-21 21:02:31,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381910041] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:02:31,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709963004] [2023-11-21 21:02:31,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:31,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:02:31,407 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:02:31,407 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:02:31,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-21 21:02:31,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:31,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 21:02:31,549 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:02:31,606 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-21 21:02:31,607 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:02:31,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709963004] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:31,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 21:02:31,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-11-21 21:02:31,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743693515] [2023-11-21 21:02:31,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:31,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:02:31,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:31,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:02:31,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-21 21:02:31,609 INFO L87 Difference]: Start difference. First operand 2573 states and 3147 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-21 21:02:32,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:02:32,160 INFO L93 Difference]: Finished difference Result 3462 states and 4304 transitions. [2023-11-21 21:02:32,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:02:32,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 105 [2023-11-21 21:02:32,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:02:32,171 INFO L225 Difference]: With dead ends: 3462 [2023-11-21 21:02:32,172 INFO L226 Difference]: Without dead ends: 2775 [2023-11-21 21:02:32,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-11-21 21:02:32,177 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 159 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 21:02:32,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [159 Valid, 187 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 21:02:32,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2775 states. [2023-11-21 21:02:32,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2775 to 2775. [2023-11-21 21:02:32,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2775 states, 2106 states have (on average 1.2150997150997151) internal successors, (2559), 2130 states have internal predecessors, (2559), 369 states have call successors, (369), 299 states have call predecessors, (369), 298 states have return successors, (420), 347 states have call predecessors, (420), 368 states have call successors, (420) [2023-11-21 21:02:32,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2775 states to 2775 states and 3348 transitions. [2023-11-21 21:02:32,728 INFO L78 Accepts]: Start accepts. Automaton has 2775 states and 3348 transitions. Word has length 105 [2023-11-21 21:02:32,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:02:32,729 INFO L495 AbstractCegarLoop]: Abstraction has 2775 states and 3348 transitions. [2023-11-21 21:02:32,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-21 21:02:32,729 INFO L276 IsEmpty]: Start isEmpty. Operand 2775 states and 3348 transitions. [2023-11-21 21:02:32,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-21 21:02:32,738 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:32,738 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:32,765 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-21 21:02:32,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2023-11-21 21:02:32,951 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:02:32,952 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:32,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1420638973, now seen corresponding path program 1 times [2023-11-21 21:02:32,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:32,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154705753] [2023-11-21 21:02:32,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:32,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:32,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:33,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:02:33,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:33,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:02:33,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:33,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 21:02:33,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:33,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-21 21:02:33,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:33,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-21 21:02:33,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:33,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-21 21:02:33,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:33,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-21 21:02:33,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:33,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2023-11-21 21:02:33,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:33,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-21 21:02:33,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:33,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-21 21:02:33,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:33,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-21 21:02:33,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:33,142 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2023-11-21 21:02:33,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:33,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154705753] [2023-11-21 21:02:33,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154705753] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:02:33,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17980000] [2023-11-21 21:02:33,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:33,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:02:33,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:02:33,144 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:02:33,167 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-21 21:02:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:33,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-21 21:02:33,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:02:33,321 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-11-21 21:02:33,322 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:02:33,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17980000] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:33,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 21:02:33,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2023-11-21 21:02:33,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842887915] [2023-11-21 21:02:33,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:33,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:02:33,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:33,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:02:33,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-21 21:02:33,324 INFO L87 Difference]: Start difference. First operand 2775 states and 3348 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-21 21:02:33,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:02:33,985 INFO L93 Difference]: Finished difference Result 3950 states and 4873 transitions. [2023-11-21 21:02:33,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-21 21:02:33,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 105 [2023-11-21 21:02:33,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:02:33,996 INFO L225 Difference]: With dead ends: 3950 [2023-11-21 21:02:33,996 INFO L226 Difference]: Without dead ends: 3178 [2023-11-21 21:02:33,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-11-21 21:02:34,000 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 42 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-21 21:02:34,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 376 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-21 21:02:34,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3178 states. [2023-11-21 21:02:34,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3178 to 2979. [2023-11-21 21:02:34,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2979 states, 2278 states have (on average 1.2181738366988586) internal successors, (2775), 2302 states have internal predecessors, (2775), 385 states have call successors, (385), 315 states have call predecessors, (385), 314 states have return successors, (436), 363 states have call predecessors, (436), 384 states have call successors, (436) [2023-11-21 21:02:34,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2979 states to 2979 states and 3596 transitions. [2023-11-21 21:02:34,576 INFO L78 Accepts]: Start accepts. Automaton has 2979 states and 3596 transitions. Word has length 105 [2023-11-21 21:02:34,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:02:34,576 INFO L495 AbstractCegarLoop]: Abstraction has 2979 states and 3596 transitions. [2023-11-21 21:02:34,576 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-21 21:02:34,576 INFO L276 IsEmpty]: Start isEmpty. Operand 2979 states and 3596 transitions. [2023-11-21 21:02:34,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-21 21:02:34,584 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:34,584 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:34,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-11-21 21:02:34,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:02:34,799 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:02:34,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:34,800 INFO L85 PathProgramCache]: Analyzing trace with hash -1961706391, now seen corresponding path program 1 times [2023-11-21 21:02:34,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:34,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420202890] [2023-11-21 21:02:34,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:34,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:34,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:34,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:02:34,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:34,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:02:34,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:34,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 21:02:34,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:34,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-21 21:02:34,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:35,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-21 21:02:35,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:35,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-21 21:02:35,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:35,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-21 21:02:35,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:35,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-21 21:02:35,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:35,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-21 21:02:35,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:35,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-21 21:02:35,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:35,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-21 21:02:35,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:35,051 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 14 proven. 19 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-11-21 21:02:35,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:35,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420202890] [2023-11-21 21:02:35,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420202890] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:02:35,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [204063761] [2023-11-21 21:02:35,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:35,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:02:35,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:02:35,053 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:02:35,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-11-21 21:02:35,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:35,183 INFO L262 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 9 conjunts are in the unsatisfiable core [2023-11-21 21:02:35,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:02:35,244 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2023-11-21 21:02:35,244 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:02:35,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [204063761] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:35,244 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 21:02:35,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 8 [2023-11-21 21:02:35,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480990973] [2023-11-21 21:02:35,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:35,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-21 21:02:35,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:35,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-21 21:02:35,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-21 21:02:35,247 INFO L87 Difference]: Start difference. First operand 2979 states and 3596 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-21 21:02:36,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:02:36,129 INFO L93 Difference]: Finished difference Result 5367 states and 6579 transitions. [2023-11-21 21:02:36,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 21:02:36,130 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 105 [2023-11-21 21:02:36,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:02:36,142 INFO L225 Difference]: With dead ends: 5367 [2023-11-21 21:02:36,142 INFO L226 Difference]: Without dead ends: 3527 [2023-11-21 21:02:36,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2023-11-21 21:02:36,148 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 424 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-21 21:02:36,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [445 Valid, 328 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-21 21:02:36,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3527 states. [2023-11-21 21:02:36,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3527 to 3525. [2023-11-21 21:02:36,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3525 states, 2696 states have (on average 1.2095697329376855) internal successors, (3261), 2723 states have internal predecessors, (3261), 459 states have call successors, (459), 369 states have call predecessors, (459), 368 states have return successors, (524), 434 states have call predecessors, (524), 458 states have call successors, (524) [2023-11-21 21:02:36,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3525 states to 3525 states and 4244 transitions. [2023-11-21 21:02:36,790 INFO L78 Accepts]: Start accepts. Automaton has 3525 states and 4244 transitions. Word has length 105 [2023-11-21 21:02:36,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:02:36,791 INFO L495 AbstractCegarLoop]: Abstraction has 3525 states and 4244 transitions. [2023-11-21 21:02:36,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-21 21:02:36,791 INFO L276 IsEmpty]: Start isEmpty. Operand 3525 states and 4244 transitions. [2023-11-21 21:02:36,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2023-11-21 21:02:36,800 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:36,800 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:02:36,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-11-21 21:02:37,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-11-21 21:02:37,015 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:02:37,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:37,016 INFO L85 PathProgramCache]: Analyzing trace with hash -392345977, now seen corresponding path program 1 times [2023-11-21 21:02:37,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:37,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919840445] [2023-11-21 21:02:37,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:37,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:37,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:37,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:02:37,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:37,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:02:37,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:37,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 21:02:37,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:37,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:02:37,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:37,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-21 21:02:37,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:37,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-21 21:02:37,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:37,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-21 21:02:37,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:37,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-21 21:02:37,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:37,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-21 21:02:37,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:37,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-21 21:02:37,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:37,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-21 21:02:37,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:37,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:02:37,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:37,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-21 21:02:37,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:37,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2023-11-21 21:02:37,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:37,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-11-21 21:02:37,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:37,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-11-21 21:02:37,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:37,253 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2023-11-21 21:02:37,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:37,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919840445] [2023-11-21 21:02:37,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919840445] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:02:37,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [824954628] [2023-11-21 21:02:37,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:37,254 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:02:37,254 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:02:37,255 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:02:37,275 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-11-21 21:02:37,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:37,382 INFO L262 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-21 21:02:37,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:02:37,490 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-21 21:02:37,491 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:02:37,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [824954628] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:37,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 21:02:37,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2023-11-21 21:02:37,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864262386] [2023-11-21 21:02:37,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:37,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-21 21:02:37,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:37,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-21 21:02:37,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2023-11-21 21:02:37,493 INFO L87 Difference]: Start difference. First operand 3525 states and 4244 transitions. Second operand has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-21 21:02:38,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:02:38,331 INFO L93 Difference]: Finished difference Result 4311 states and 5136 transitions. [2023-11-21 21:02:38,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-21 21:02:38,331 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 112 [2023-11-21 21:02:38,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:02:38,344 INFO L225 Difference]: With dead ends: 4311 [2023-11-21 21:02:38,344 INFO L226 Difference]: Without dead ends: 3253 [2023-11-21 21:02:38,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2023-11-21 21:02:38,352 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 66 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-21 21:02:38,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 971 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-21 21:02:38,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3253 states. [2023-11-21 21:02:38,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3253 to 3135. [2023-11-21 21:02:38,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3135 states, 2416 states have (on average 1.2156456953642385) internal successors, (2937), 2437 states have internal predecessors, (2937), 400 states have call successors, (400), 314 states have call predecessors, (400), 317 states have return successors, (455), 385 states have call predecessors, (455), 399 states have call successors, (455) [2023-11-21 21:02:38,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3135 states to 3135 states and 3792 transitions. [2023-11-21 21:02:38,896 INFO L78 Accepts]: Start accepts. Automaton has 3135 states and 3792 transitions. Word has length 112 [2023-11-21 21:02:38,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:02:38,896 INFO L495 AbstractCegarLoop]: Abstraction has 3135 states and 3792 transitions. [2023-11-21 21:02:38,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.833333333333334) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2023-11-21 21:02:38,897 INFO L276 IsEmpty]: Start isEmpty. Operand 3135 states and 3792 transitions. [2023-11-21 21:02:38,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-21 21:02:38,903 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:02:38,903 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:02:38,930 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-11-21 21:02:39,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2023-11-21 21:02:39,125 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:02:39,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:02:39,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1184394253, now seen corresponding path program 1 times [2023-11-21 21:02:39,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:02:39,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185421636] [2023-11-21 21:02:39,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:39,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:02:39,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:39,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:02:39,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:39,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:02:39,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:39,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-21 21:02:39,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:39,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-21 21:02:39,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:39,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-21 21:02:39,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:39,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-21 21:02:39,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:39,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-21 21:02:39,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:39,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-21 21:02:39,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:39,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-11-21 21:02:39,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:39,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-11-21 21:02:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:39,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2023-11-21 21:02:39,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:39,269 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 39 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-11-21 21:02:39,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:02:39,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185421636] [2023-11-21 21:02:39,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185421636] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-21 21:02:39,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1954976878] [2023-11-21 21:02:39,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:02:39,270 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-21 21:02:39,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:02:39,271 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-21 21:02:39,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c36414b3-d755-48c2-a3ed-e2a2a72d89e2/bin/uautomizer-verify-bycVGegfSx/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-11-21 21:02:39,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:02:39,403 INFO L262 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-21 21:02:39,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-21 21:02:39,464 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-11-21 21:02:39,464 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-21 21:02:39,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1954976878] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:02:39,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-21 21:02:39,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 6 [2023-11-21 21:02:39,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989690206] [2023-11-21 21:02:39,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:02:39,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-21 21:02:39,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:02:39,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-21 21:02:39,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-21 21:02:39,468 INFO L87 Difference]: Start difference. First operand 3135 states and 3792 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11)