./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--usb--b2c2--b2c2-flexcop-usb.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version cf1a7837 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--usb--b2c2--b2c2-flexcop-usb.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 637058e9c434875c2a607ff053c6fcb810c5a78083685ed0943116abd98a4161 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-cf1a783 [2023-11-12 02:21:45,568 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-12 02:21:45,697 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/config/svcomp-Overflow-64bit-Automizer_Default.epf [2023-11-12 02:21:45,708 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-12 02:21:45,709 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-12 02:21:45,755 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-12 02:21:45,756 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-12 02:21:45,757 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-12 02:21:45,758 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-12 02:21:45,764 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-12 02:21:45,766 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-12 02:21:45,767 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-12 02:21:45,767 INFO L153 SettingsManager]: * Use SBE=true [2023-11-12 02:21:45,769 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-12 02:21:45,770 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-12 02:21:45,770 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-12 02:21:45,771 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-12 02:21:45,771 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-12 02:21:45,772 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-12 02:21:45,773 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-12 02:21:45,773 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-12 02:21:45,774 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-12 02:21:45,774 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-12 02:21:45,775 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-12 02:21:45,776 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-12 02:21:45,776 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-12 02:21:45,777 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-12 02:21:45,777 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:21:45,778 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-12 02:21:45,778 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-12 02:21:45,780 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-12 02:21:45,780 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-12 02:21:45,780 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-12 02:21:45,781 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-12 02:21:45,781 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-12 02:21:45,781 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-12 02:21:45,781 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-12 02:21:45,782 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-11-12 02:21:45,782 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_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 637058e9c434875c2a607ff053c6fcb810c5a78083685ed0943116abd98a4161 [2023-11-12 02:21:46,090 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-12 02:21:46,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-12 02:21:46,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-12 02:21:46,126 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-12 02:21:46,127 INFO L274 PluginConnector]: CDTParser initialized [2023-11-12 02:21:46,129 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--usb--b2c2--b2c2-flexcop-usb.ko-main.cil.out.i [2023-11-12 02:21:49,272 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-12 02:21:49,820 INFO L384 CDTParser]: Found 1 translation units. [2023-11-12 02:21:49,821 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--usb--b2c2--b2c2-flexcop-usb.ko-main.cil.out.i [2023-11-12 02:21:49,864 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/data/98a944e0f/3e68f4b1f63e4e8a9f904ea8c51df84c/FLAG595d9f2f2 [2023-11-12 02:21:49,880 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/data/98a944e0f/3e68f4b1f63e4e8a9f904ea8c51df84c [2023-11-12 02:21:49,883 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-12 02:21:49,885 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-12 02:21:49,887 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-12 02:21:49,887 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-12 02:21:49,893 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-12 02:21:49,894 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:21:49" (1/1) ... [2023-11-12 02:21:49,895 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b5f49c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:21:49, skipping insertion in model container [2023-11-12 02:21:49,896 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 02:21:49" (1/1) ... [2023-11-12 02:21:50,024 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-12 02:21:51,396 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:21:51,436 INFO L202 MainTranslator]: Completed pre-run [2023-11-12 02:21:51,628 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("1:\tud2\n.pushsection __bug_table,\"a\"\n2:\t.long 1b - 2b, %c0 - 2b\n\t.word %c1, 0\n\t.org 2b+%c2\n.popsection": : "i" ((char *)"/work/ldvuser/zakharov_benchmarks/bench/cpa/inst/current/envs/linux-3.8-rc1/linux-3.8-rc1/arch/x86/include/asm/paravirt.h"), "i" (825), "i" (12UL)); [6558-6559] [2023-11-12 02:21:51,630 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring inline assembler instruction C: __asm__ volatile ("771:\n\tcall *%c2;\n772:\n.pushsection .parainstructions,\"a\"\n .balign 8 \n .quad 771b\n .byte %c1\n .byte 772b-771b\n .short %c3\n.popsection\n": "=a" (__eax): [paravirt_typenum] "i" (45UL), [paravirt_opptr] "i" (& pv_irq_ops.save_fl.func), [paravirt_clobber] "i" (1): "memory", "cc"); [6564-6566] [2023-11-12 02:21:51,889 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-12 02:21:51,938 INFO L206 MainTranslator]: Completed translation [2023-11-12 02:21:51,939 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:21:51 WrapperNode [2023-11-12 02:21:51,939 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-12 02:21:51,940 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-12 02:21:51,941 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-12 02:21:51,941 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-12 02:21:51,951 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:21:51" (1/1) ... [2023-11-12 02:21:52,054 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:21:51" (1/1) ... [2023-11-12 02:21:52,136 INFO L138 Inliner]: procedures = 127, calls = 1011, calls flagged for inlining = 55, calls inlined = 43, statements flattened = 1003 [2023-11-12 02:21:52,136 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-12 02:21:52,137 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-12 02:21:52,137 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-12 02:21:52,138 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-12 02:21:52,149 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:21:51" (1/1) ... [2023-11-12 02:21:52,149 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:21:51" (1/1) ... [2023-11-12 02:21:52,160 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:21:51" (1/1) ... [2023-11-12 02:21:52,161 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:21:51" (1/1) ... [2023-11-12 02:21:52,208 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:21:51" (1/1) ... [2023-11-12 02:21:52,217 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:21:51" (1/1) ... [2023-11-12 02:21:52,229 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:21:51" (1/1) ... [2023-11-12 02:21:52,237 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:21:51" (1/1) ... [2023-11-12 02:21:52,254 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-12 02:21:52,255 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-12 02:21:52,255 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-12 02:21:52,255 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-12 02:21:52,256 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:21:51" (1/1) ... [2023-11-12 02:21:52,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-12 02:21:52,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:21:52,341 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-12 02:21:52,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-12 02:21:52,418 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2023-11-12 02:21:52,418 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2023-11-12 02:21:52,419 INFO L130 BoogieDeclarations]: Found specification of procedure flexcop_device_exit [2023-11-12 02:21:52,419 INFO L138 BoogieDeclarations]: Found implementation of procedure flexcop_device_exit [2023-11-12 02:21:52,420 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2023-11-12 02:21:52,420 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2023-11-12 02:21:52,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-12 02:21:52,420 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2023-11-12 02:21:52,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2023-11-12 02:21:52,421 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2023-11-12 02:21:52,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2023-11-12 02:21:52,421 INFO L130 BoogieDeclarations]: Found specification of procedure flexcop_usb_exit [2023-11-12 02:21:52,421 INFO L138 BoogieDeclarations]: Found implementation of procedure flexcop_usb_exit [2023-11-12 02:21:52,421 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-12 02:21:52,423 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2023-11-12 02:21:52,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2023-11-12 02:21:52,424 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2023-11-12 02:21:52,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2023-11-12 02:21:52,424 INFO L130 BoogieDeclarations]: Found specification of procedure flexcop_device_kfree [2023-11-12 02:21:52,425 INFO L138 BoogieDeclarations]: Found implementation of procedure flexcop_device_kfree [2023-11-12 02:21:52,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-12 02:21:52,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-12 02:21:52,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-11-12 02:21:52,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-11-12 02:21:52,426 INFO L130 BoogieDeclarations]: Found specification of procedure flexcop_usb_transfer_exit [2023-11-12 02:21:52,426 INFO L138 BoogieDeclarations]: Found implementation of procedure flexcop_usb_transfer_exit [2023-11-12 02:21:52,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-11-12 02:21:52,427 INFO L130 BoogieDeclarations]: Found specification of procedure printk [2023-11-12 02:21:52,427 INFO L138 BoogieDeclarations]: Found implementation of procedure printk [2023-11-12 02:21:52,427 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2023-11-12 02:21:52,428 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2023-11-12 02:21:52,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-12 02:21:52,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-12 02:21:52,429 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-12 02:21:53,031 INFO L236 CfgBuilder]: Building ICFG [2023-11-12 02:21:53,035 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-12 02:21:55,166 INFO L277 CfgBuilder]: Performing block encoding [2023-11-12 02:21:55,191 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-12 02:21:55,192 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-11-12 02:21:55,194 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:21:55 BoogieIcfgContainer [2023-11-12 02:21:55,195 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-12 02:21:55,197 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-12 02:21:55,197 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-12 02:21:55,206 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-12 02:21:55,206 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 02:21:49" (1/3) ... [2023-11-12 02:21:55,207 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e1b6c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:21:55, skipping insertion in model container [2023-11-12 02:21:55,207 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 02:21:51" (2/3) ... [2023-11-12 02:21:55,208 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e1b6c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 02:21:55, skipping insertion in model container [2023-11-12 02:21:55,208 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 02:21:55" (3/3) ... [2023-11-12 02:21:55,210 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--media--usb--b2c2--b2c2-flexcop-usb.ko-main.cil.out.i [2023-11-12 02:21:55,234 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-12 02:21:55,234 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2023-11-12 02:21:55,301 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-12 02:21:55,309 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;@795a3a82, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-11-12 02:21:55,309 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-11-12 02:21:55,316 INFO L276 IsEmpty]: Start isEmpty. Operand has 311 states, 236 states have (on average 1.444915254237288) internal successors, (341), 266 states have internal predecessors, (341), 37 states have call successors, (37), 12 states have call predecessors, (37), 12 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2023-11-12 02:21:55,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-11-12 02:21:55,328 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:21:55,329 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] [2023-11-12 02:21:55,330 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting flexcop_usb_transfer_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [flexcop_usb_transfer_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, flexcop_usb_transfer_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-12 02:21:55,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:21:55,336 INFO L85 PathProgramCache]: Analyzing trace with hash -160460269, now seen corresponding path program 1 times [2023-11-12 02:21:55,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:21:55,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366356740] [2023-11-12 02:21:55,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:21:55,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:21:55,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:55,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-12 02:21:55,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:55,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:21:55,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:21:55,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366356740] [2023-11-12 02:21:55,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366356740] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:21:55,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:21:55,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:21:55,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793344135] [2023-11-12 02:21:55,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:21:55,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:21:55,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:21:56,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:21:56,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:21:56,016 INFO L87 Difference]: Start difference. First operand has 311 states, 236 states have (on average 1.444915254237288) internal successors, (341), 266 states have internal predecessors, (341), 37 states have call successors, (37), 12 states have call predecessors, (37), 12 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) Second operand has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 02:21:56,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:21:56,711 INFO L93 Difference]: Finished difference Result 640 states and 873 transitions. [2023-11-12 02:21:56,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:21:56,721 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2023-11-12 02:21:56,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:21:56,741 INFO L225 Difference]: With dead ends: 640 [2023-11-12 02:21:56,741 INFO L226 Difference]: Without dead ends: 301 [2023-11-12 02:21:56,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:21:56,755 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 135 mSDsluCounter, 496 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 02:21:56,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 793 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 02:21:56,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2023-11-12 02:21:56,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 298. [2023-11-12 02:21:56,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 234 states have (on average 1.4188034188034189) internal successors, (332), 254 states have internal predecessors, (332), 34 states have call successors, (34), 11 states have call predecessors, (34), 11 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2023-11-12 02:21:56,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 400 transitions. [2023-11-12 02:21:56,835 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 400 transitions. Word has length 23 [2023-11-12 02:21:56,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:21:56,835 INFO L495 AbstractCegarLoop]: Abstraction has 298 states and 400 transitions. [2023-11-12 02:21:56,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.0) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 02:21:56,836 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 400 transitions. [2023-11-12 02:21:56,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2023-11-12 02:21:56,838 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:21:56,839 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] [2023-11-12 02:21:56,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-12 02:21:56,839 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting flexcop_usb_transfer_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [flexcop_usb_transfer_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, flexcop_usb_transfer_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-12 02:21:56,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:21:56,840 INFO L85 PathProgramCache]: Analyzing trace with hash -105098595, now seen corresponding path program 1 times [2023-11-12 02:21:56,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:21:56,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558004387] [2023-11-12 02:21:56,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:21:56,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:21:56,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:57,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-12 02:21:57,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:57,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-12 02:21:57,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:21:57,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558004387] [2023-11-12 02:21:57,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558004387] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:21:57,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:21:57,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:21:57,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834195082] [2023-11-12 02:21:57,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:21:57,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:21:57,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:21:57,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:21:57,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:21:57,149 INFO L87 Difference]: Start difference. First operand 298 states and 400 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 02:21:57,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:21:57,812 INFO L93 Difference]: Finished difference Result 692 states and 923 transitions. [2023-11-12 02:21:57,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:21:57,812 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 35 [2023-11-12 02:21:57,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:21:57,819 INFO L225 Difference]: With dead ends: 692 [2023-11-12 02:21:57,819 INFO L226 Difference]: Without dead ends: 397 [2023-11-12 02:21:57,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:21:57,823 INFO L413 NwaCegarLoop]: 298 mSDtfsCounter, 419 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 447 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-12 02:21:57,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [447 Valid, 589 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-12 02:21:57,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 397 states. [2023-11-12 02:21:57,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 397 to 390. [2023-11-12 02:21:57,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 310 states have (on average 1.403225806451613) internal successors, (435), 330 states have internal predecessors, (435), 41 states have call successors, (41), 20 states have call predecessors, (41), 20 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2023-11-12 02:21:57,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 517 transitions. [2023-11-12 02:21:57,860 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 517 transitions. Word has length 35 [2023-11-12 02:21:57,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:21:57,861 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 517 transitions. [2023-11-12 02:21:57,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-11-12 02:21:57,861 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 517 transitions. [2023-11-12 02:21:57,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-11-12 02:21:57,863 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:21:57,863 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] [2023-11-12 02:21:57,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-12 02:21:57,863 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [flexcop_usb_transfer_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, flexcop_usb_transfer_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-12 02:21:57,864 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:21:57,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1779882348, now seen corresponding path program 1 times [2023-11-12 02:21:57,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:21:57,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406656149] [2023-11-12 02:21:57,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:21:57,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:21:57,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:58,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-12 02:21:58,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:58,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-12 02:21:58,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:58,165 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:21:58,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:21:58,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406656149] [2023-11-12 02:21:58,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406656149] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:21:58,166 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:21:58,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:21:58,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297104649] [2023-11-12 02:21:58,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:21:58,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:21:58,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:21:58,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:21:58,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:21:58,168 INFO L87 Difference]: Start difference. First operand 390 states and 517 transitions. Second operand has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 02:21:58,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:21:58,859 INFO L93 Difference]: Finished difference Result 672 states and 894 transitions. [2023-11-12 02:21:58,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:21:58,860 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2023-11-12 02:21:58,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:21:58,866 INFO L225 Difference]: With dead ends: 672 [2023-11-12 02:21:58,866 INFO L226 Difference]: Without dead ends: 670 [2023-11-12 02:21:58,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:21:58,877 INFO L413 NwaCegarLoop]: 277 mSDtfsCounter, 420 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 741 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-12 02:21:58,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 741 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 329 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-12 02:21:58,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2023-11-12 02:21:58,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 649. [2023-11-12 02:21:58,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 649 states, 530 states have (on average 1.4075471698113207) internal successors, (746), 552 states have internal predecessors, (746), 69 states have call successors, (69), 31 states have call predecessors, (69), 31 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-12 02:21:58,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 649 states to 649 states and 884 transitions. [2023-11-12 02:21:58,938 INFO L78 Accepts]: Start accepts. Automaton has 649 states and 884 transitions. Word has length 37 [2023-11-12 02:21:58,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:21:58,939 INFO L495 AbstractCegarLoop]: Abstraction has 649 states and 884 transitions. [2023-11-12 02:21:58,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-12 02:21:58,940 INFO L276 IsEmpty]: Start isEmpty. Operand 649 states and 884 transitions. [2023-11-12 02:21:58,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-12 02:21:58,944 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:21:58,944 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-12 02:21:58,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-12 02:21:58,945 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting flexcop_usb_transfer_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [flexcop_usb_transfer_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, flexcop_usb_transfer_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-12 02:21:58,946 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:21:58,946 INFO L85 PathProgramCache]: Analyzing trace with hash 943776845, now seen corresponding path program 1 times [2023-11-12 02:21:58,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:21:58,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059674890] [2023-11-12 02:21:58,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:21:58,947 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:21:59,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:59,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-12 02:21:59,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:59,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-12 02:21:59,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:59,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-12 02:21:59,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:21:59,258 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 02:21:59,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:21:59,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059674890] [2023-11-12 02:21:59,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059674890] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:21:59,259 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:21:59,259 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:21:59,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594500889] [2023-11-12 02:21:59,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:21:59,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:21:59,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:21:59,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:21:59,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:21:59,262 INFO L87 Difference]: Start difference. First operand 649 states and 884 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-12 02:22:00,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:22:00,252 INFO L93 Difference]: Finished difference Result 1555 states and 2106 transitions. [2023-11-12 02:22:00,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-12 02:22:00,253 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 58 [2023-11-12 02:22:00,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:22:00,263 INFO L225 Difference]: With dead ends: 1555 [2023-11-12 02:22:00,263 INFO L226 Difference]: Without dead ends: 1166 [2023-11-12 02:22:00,265 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:22:00,267 INFO L413 NwaCegarLoop]: 520 mSDtfsCounter, 441 mSDsluCounter, 1106 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 469 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-11-12 02:22:00,267 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [469 Valid, 1626 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-11-12 02:22:00,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1166 states. [2023-11-12 02:22:00,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1166 to 653. [2023-11-12 02:22:00,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 653 states, 534 states have (on average 1.404494382022472) internal successors, (750), 556 states have internal predecessors, (750), 69 states have call successors, (69), 31 states have call predecessors, (69), 31 states have return successors, (69), 69 states have call predecessors, (69), 69 states have call successors, (69) [2023-11-12 02:22:00,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 653 states to 653 states and 888 transitions. [2023-11-12 02:22:00,325 INFO L78 Accepts]: Start accepts. Automaton has 653 states and 888 transitions. Word has length 58 [2023-11-12 02:22:00,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:22:00,326 INFO L495 AbstractCegarLoop]: Abstraction has 653 states and 888 transitions. [2023-11-12 02:22:00,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-11-12 02:22:00,326 INFO L276 IsEmpty]: Start isEmpty. Operand 653 states and 888 transitions. [2023-11-12 02:22:00,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-11-12 02:22:00,330 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:22:00,330 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:22:00,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-12 02:22:00,331 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting flexcop_usb_transfer_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [flexcop_usb_transfer_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, flexcop_usb_transfer_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-12 02:22:00,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:00,331 INFO L85 PathProgramCache]: Analyzing trace with hash 132178922, now seen corresponding path program 1 times [2023-11-12 02:22:00,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:00,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932907411] [2023-11-12 02:22:00,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:00,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:00,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:00,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-12 02:22:00,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:00,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-12 02:22:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:00,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-12 02:22:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:00,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-12 02:22:00,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:00,731 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-12 02:22:00,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:00,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932907411] [2023-11-12 02:22:00,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932907411] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:00,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:00,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:22:00,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687148093] [2023-11-12 02:22:00,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:00,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:22:00,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:00,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:22:00,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:22:00,735 INFO L87 Difference]: Start difference. First operand 653 states and 888 transitions. Second operand has 4 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-12 02:22:01,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:22:01,218 INFO L93 Difference]: Finished difference Result 1335 states and 1826 transitions. [2023-11-12 02:22:01,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:22:01,219 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 67 [2023-11-12 02:22:01,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:22:01,225 INFO L225 Difference]: With dead ends: 1335 [2023-11-12 02:22:01,225 INFO L226 Difference]: Without dead ends: 698 [2023-11-12 02:22:01,227 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:22:01,228 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 122 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:22:01,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 759 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 02:22:01,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2023-11-12 02:22:01,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 692. [2023-11-12 02:22:01,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 570 states have (on average 1.4) internal successors, (798), 592 states have internal predecessors, (798), 72 states have call successors, (72), 31 states have call predecessors, (72), 31 states have return successors, (72), 72 states have call predecessors, (72), 72 states have call successors, (72) [2023-11-12 02:22:01,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 942 transitions. [2023-11-12 02:22:01,280 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 942 transitions. Word has length 67 [2023-11-12 02:22:01,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:22:01,281 INFO L495 AbstractCegarLoop]: Abstraction has 692 states and 942 transitions. [2023-11-12 02:22:01,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 1 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2023-11-12 02:22:01,282 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 942 transitions. [2023-11-12 02:22:01,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2023-11-12 02:22:01,284 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:22:01,284 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:22:01,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-12 02:22:01,285 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting flexcop_usb_transfer_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [flexcop_usb_transfer_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, flexcop_usb_transfer_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-12 02:22:01,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:01,286 INFO L85 PathProgramCache]: Analyzing trace with hash -725616401, now seen corresponding path program 1 times [2023-11-12 02:22:01,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:01,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021616804] [2023-11-12 02:22:01,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:01,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:01,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:01,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-12 02:22:01,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:01,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-12 02:22:01,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:01,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-12 02:22:01,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:01,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-12 02:22:01,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:01,746 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-11-12 02:22:01,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:01,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021616804] [2023-11-12 02:22:01,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021616804] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:22:01,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222236068] [2023-11-12 02:22:01,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:01,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:01,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:01,752 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:22:01,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-12 02:22:02,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:02,283 INFO L262 TraceCheckSpWp]: Trace formula consists of 992 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-12 02:22:02,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:22:02,409 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 02:22:02,409 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:22:02,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222236068] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:02,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:22:02,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [4] total 9 [2023-11-12 02:22:02,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640409399] [2023-11-12 02:22:02,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:02,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:22:02,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:02,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:22:02,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:22:02,413 INFO L87 Difference]: Start difference. First operand 692 states and 942 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-12 02:22:04,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 02:22:06,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 02:22:08,727 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 02:22:08,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:22:08,779 INFO L93 Difference]: Finished difference Result 1985 states and 2710 transitions. [2023-11-12 02:22:08,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-12 02:22:08,780 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 72 [2023-11-12 02:22:08,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:22:08,791 INFO L225 Difference]: With dead ends: 1985 [2023-11-12 02:22:08,791 INFO L226 Difference]: Without dead ends: 1309 [2023-11-12 02:22:08,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2023-11-12 02:22:08,795 INFO L413 NwaCegarLoop]: 722 mSDtfsCounter, 468 mSDsluCounter, 2503 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 3225 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:22:08,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 3225 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 71 Invalid, 3 Unknown, 0 Unchecked, 6.2s Time] [2023-11-12 02:22:08,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2023-11-12 02:22:08,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 700. [2023-11-12 02:22:08,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 576 states have (on average 1.3958333333333333) internal successors, (804), 598 states have internal predecessors, (804), 74 states have call successors, (74), 31 states have call predecessors, (74), 31 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2023-11-12 02:22:08,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 952 transitions. [2023-11-12 02:22:08,873 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 952 transitions. Word has length 72 [2023-11-12 02:22:08,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:22:08,874 INFO L495 AbstractCegarLoop]: Abstraction has 700 states and 952 transitions. [2023-11-12 02:22:08,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 6 states have internal predecessors, (59), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2023-11-12 02:22:08,874 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 952 transitions. [2023-11-12 02:22:08,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-11-12 02:22:08,879 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:22:08,879 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:22:08,897 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-12 02:22:09,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:09,089 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting flexcop_usb_transfer_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [flexcop_usb_transfer_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, flexcop_usb_transfer_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-12 02:22:09,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:09,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1455565736, now seen corresponding path program 1 times [2023-11-12 02:22:09,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:09,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107590307] [2023-11-12 02:22:09,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:09,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:09,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:09,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-12 02:22:09,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:09,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-12 02:22:09,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:09,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-12 02:22:09,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:09,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-12 02:22:09,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:09,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2023-11-12 02:22:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:09,697 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-12 02:22:09,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:09,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107590307] [2023-11-12 02:22:09,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107590307] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:09,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:09,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:22:09,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918327054] [2023-11-12 02:22:09,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:09,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:22:09,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:09,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:22:09,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:22:09,703 INFO L87 Difference]: Start difference. First operand 700 states and 952 transitions. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:22:11,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 02:22:14,172 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 02:22:14,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:22:14,387 INFO L93 Difference]: Finished difference Result 1458 states and 1988 transitions. [2023-11-12 02:22:14,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-12 02:22:14,388 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 80 [2023-11-12 02:22:14,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:22:14,395 INFO L225 Difference]: With dead ends: 1458 [2023-11-12 02:22:14,396 INFO L226 Difference]: Without dead ends: 774 [2023-11-12 02:22:14,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:22:14,401 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 421 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 52 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-11-12 02:22:14,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [441 Valid, 860 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 371 Invalid, 2 Unknown, 0 Unchecked, 4.6s Time] [2023-11-12 02:22:14,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2023-11-12 02:22:14,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 700. [2023-11-12 02:22:14,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 700 states, 576 states have (on average 1.3923611111111112) internal successors, (802), 596 states have internal predecessors, (802), 74 states have call successors, (74), 31 states have call predecessors, (74), 31 states have return successors, (74), 74 states have call predecessors, (74), 74 states have call successors, (74) [2023-11-12 02:22:14,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700 states to 700 states and 950 transitions. [2023-11-12 02:22:14,465 INFO L78 Accepts]: Start accepts. Automaton has 700 states and 950 transitions. Word has length 80 [2023-11-12 02:22:14,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:22:14,467 INFO L495 AbstractCegarLoop]: Abstraction has 700 states and 950 transitions. [2023-11-12 02:22:14,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-11-12 02:22:14,468 INFO L276 IsEmpty]: Start isEmpty. Operand 700 states and 950 transitions. [2023-11-12 02:22:14,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-12 02:22:14,471 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:22:14,471 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:22:14,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-12 02:22:14,471 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [flexcop_usb_transfer_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, flexcop_usb_transfer_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-12 02:22:14,472 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:14,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1360086900, now seen corresponding path program 1 times [2023-11-12 02:22:14,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:14,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137442619] [2023-11-12 02:22:14,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:14,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:14,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:14,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-12 02:22:14,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:14,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-12 02:22:14,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:14,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-12 02:22:14,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:14,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-12 02:22:14,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:14,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:22:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:14,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-12 02:22:14,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:14,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137442619] [2023-11-12 02:22:14,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137442619] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:14,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:14,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-12 02:22:14,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162105297] [2023-11-12 02:22:14,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:14,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:22:14,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:14,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:22:14,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:22:14,886 INFO L87 Difference]: Start difference. First operand 700 states and 950 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-12 02:22:15,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:22:15,401 INFO L93 Difference]: Finished difference Result 1504 states and 2060 transitions. [2023-11-12 02:22:15,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:22:15,402 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 88 [2023-11-12 02:22:15,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:22:15,409 INFO L225 Difference]: With dead ends: 1504 [2023-11-12 02:22:15,409 INFO L226 Difference]: Without dead ends: 820 [2023-11-12 02:22:15,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:22:15,416 INFO L413 NwaCegarLoop]: 274 mSDtfsCounter, 156 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 727 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:22:15,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 727 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 02:22:15,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2023-11-12 02:22:15,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 798. [2023-11-12 02:22:15,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 662 states have (on average 1.3987915407854985) internal successors, (926), 682 states have internal predecessors, (926), 86 states have call successors, (86), 31 states have call predecessors, (86), 31 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2023-11-12 02:22:15,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1098 transitions. [2023-11-12 02:22:15,509 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1098 transitions. Word has length 88 [2023-11-12 02:22:15,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:22:15,510 INFO L495 AbstractCegarLoop]: Abstraction has 798 states and 1098 transitions. [2023-11-12 02:22:15,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-11-12 02:22:15,511 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1098 transitions. [2023-11-12 02:22:15,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-12 02:22:15,517 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:22:15,517 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:22:15,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-12 02:22:15,518 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting flexcop_usb_transfer_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [flexcop_usb_transfer_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, flexcop_usb_transfer_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-12 02:22:15,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:15,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1145007192, now seen corresponding path program 1 times [2023-11-12 02:22:15,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:15,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112773258] [2023-11-12 02:22:15,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:15,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:15,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:15,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-12 02:22:15,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:15,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-12 02:22:15,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:15,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-12 02:22:15,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:15,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-12 02:22:15,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:15,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:22:15,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:15,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-12 02:22:15,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:15,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-12 02:22:15,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:15,932 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-12 02:22:15,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:15,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112773258] [2023-11-12 02:22:15,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112773258] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:22:15,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [833350501] [2023-11-12 02:22:15,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:15,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:15,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:15,935 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:22:15,944 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-12 02:22:16,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:16,431 INFO L262 TraceCheckSpWp]: Trace formula consists of 1111 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:22:16,438 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:22:16,471 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-11-12 02:22:16,471 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:22:16,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [833350501] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:16,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:22:16,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-11-12 02:22:16,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422307214] [2023-11-12 02:22:16,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:16,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:22:16,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:16,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:22:16,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:22:16,474 INFO L87 Difference]: Start difference. First operand 798 states and 1098 transitions. Second operand has 4 states, 3 states have (on average 22.333333333333332) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-12 02:22:16,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:22:16,550 INFO L93 Difference]: Finished difference Result 798 states and 1098 transitions. [2023-11-12 02:22:16,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:22:16,551 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 22.333333333333332) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (8), 1 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 92 [2023-11-12 02:22:16,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:22:16,557 INFO L225 Difference]: With dead ends: 798 [2023-11-12 02:22:16,557 INFO L226 Difference]: Without dead ends: 797 [2023-11-12 02:22:16,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:22:16,559 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 53 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 1046 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:22:16,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 1046 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:22:16,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2023-11-12 02:22:16,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 797. [2023-11-12 02:22:16,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 662 states have (on average 1.394259818731118) internal successors, (923), 681 states have internal predecessors, (923), 86 states have call successors, (86), 31 states have call predecessors, (86), 31 states have return successors, (86), 86 states have call predecessors, (86), 86 states have call successors, (86) [2023-11-12 02:22:16,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 1095 transitions. [2023-11-12 02:22:16,611 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 1095 transitions. Word has length 92 [2023-11-12 02:22:16,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:22:16,612 INFO L495 AbstractCegarLoop]: Abstraction has 797 states and 1095 transitions. [2023-11-12 02:22:16,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 22.333333333333332) internal successors, (67), 4 states have internal predecessors, (67), 1 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-12 02:22:16,612 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 1095 transitions. [2023-11-12 02:22:16,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-12 02:22:16,614 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:22:16,614 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:22:16,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-12 02:22:16,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:16,822 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting flexcop_usb_transfer_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [flexcop_usb_transfer_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, flexcop_usb_transfer_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-12 02:22:16,823 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:16,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1135484676, now seen corresponding path program 1 times [2023-11-12 02:22:16,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:16,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712504539] [2023-11-12 02:22:16,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:16,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:16,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:17,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-12 02:22:17,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:17,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-12 02:22:17,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:17,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-12 02:22:17,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:17,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-12 02:22:17,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:17,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:22:17,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:17,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-12 02:22:17,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:17,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-12 02:22:17,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:17,188 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-11-12 02:22:17,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:17,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712504539] [2023-11-12 02:22:17,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712504539] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:17,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:17,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-12 02:22:17,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34335189] [2023-11-12 02:22:17,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:17,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:22:17,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:17,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:22:17,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-12 02:22:17,192 INFO L87 Difference]: Start difference. First operand 797 states and 1095 transitions. Second operand has 4 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 1 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-12 02:22:17,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:22:17,637 INFO L93 Difference]: Finished difference Result 803 states and 1105 transitions. [2023-11-12 02:22:17,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:22:17,638 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 1 states have call successors, (8), 2 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 93 [2023-11-12 02:22:17,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:22:17,644 INFO L225 Difference]: With dead ends: 803 [2023-11-12 02:22:17,645 INFO L226 Difference]: Without dead ends: 802 [2023-11-12 02:22:17,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:22:17,646 INFO L413 NwaCegarLoop]: 280 mSDtfsCounter, 103 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-12 02:22:17,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 759 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-12 02:22:17,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2023-11-12 02:22:17,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 760. [2023-11-12 02:22:17,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 629 states have (on average 1.3910969793322734) internal successors, (875), 647 states have internal predecessors, (875), 83 states have call successors, (83), 31 states have call predecessors, (83), 31 states have return successors, (83), 83 states have call predecessors, (83), 83 states have call successors, (83) [2023-11-12 02:22:17,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1041 transitions. [2023-11-12 02:22:17,701 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1041 transitions. Word has length 93 [2023-11-12 02:22:17,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:22:17,702 INFO L495 AbstractCegarLoop]: Abstraction has 760 states and 1041 transitions. [2023-11-12 02:22:17,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 1 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-12 02:22:17,703 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1041 transitions. [2023-11-12 02:22:17,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-11-12 02:22:17,705 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:22:17,705 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:22:17,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-12 02:22:17,706 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [flexcop_usb_transfer_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, flexcop_usb_transfer_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-12 02:22:17,706 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:17,707 INFO L85 PathProgramCache]: Analyzing trace with hash -1715292794, now seen corresponding path program 1 times [2023-11-12 02:22:17,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:17,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137932393] [2023-11-12 02:22:17,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:17,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:18,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-12 02:22:18,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:18,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-12 02:22:18,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:18,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-12 02:22:18,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:18,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-12 02:22:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:18,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:22:18,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:18,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-12 02:22:18,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:18,174 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 02:22:18,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:18,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137932393] [2023-11-12 02:22:18,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137932393] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:22:18,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757574519] [2023-11-12 02:22:18,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:18,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:18,176 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:18,177 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:22:18,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-12 02:22:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:18,718 INFO L262 TraceCheckSpWp]: Trace formula consists of 1266 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:22:18,724 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:22:18,753 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 02:22:18,753 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:22:18,816 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-11-12 02:22:18,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757574519] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:22:18,817 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:22:18,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 8 [2023-11-12 02:22:18,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742976571] [2023-11-12 02:22:18,818 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:22:18,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-12 02:22:18,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:18,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-12 02:22:18,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:22:18,819 INFO L87 Difference]: Start difference. First operand 760 states and 1041 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 7 states have internal predecessors, (101), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-12 02:22:19,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:22:19,377 INFO L93 Difference]: Finished difference Result 1758 states and 2444 transitions. [2023-11-12 02:22:19,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-12 02:22:19,377 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 7 states have internal predecessors, (101), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 100 [2023-11-12 02:22:19,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:22:19,384 INFO L225 Difference]: With dead ends: 1758 [2023-11-12 02:22:19,384 INFO L226 Difference]: Without dead ends: 1014 [2023-11-12 02:22:19,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-11-12 02:22:19,387 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 557 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-12 02:22:19,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [596 Valid, 828 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-12 02:22:19,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2023-11-12 02:22:19,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 958. [2023-11-12 02:22:19,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 805 states have (on average 1.404968944099379) internal successors, (1131), 821 states have internal predecessors, (1131), 107 states have call successors, (107), 31 states have call predecessors, (107), 31 states have return successors, (107), 107 states have call predecessors, (107), 107 states have call successors, (107) [2023-11-12 02:22:19,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1345 transitions. [2023-11-12 02:22:19,449 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1345 transitions. Word has length 100 [2023-11-12 02:22:19,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:22:19,450 INFO L495 AbstractCegarLoop]: Abstraction has 958 states and 1345 transitions. [2023-11-12 02:22:19,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 7 states have internal predecessors, (101), 5 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-12 02:22:19,450 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1345 transitions. [2023-11-12 02:22:19,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-11-12 02:22:19,452 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:22:19,453 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:22:19,461 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-11-12 02:22:19,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:19,662 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [flexcop_usb_transfer_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, flexcop_usb_transfer_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-12 02:22:19,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:19,662 INFO L85 PathProgramCache]: Analyzing trace with hash 184855197, now seen corresponding path program 1 times [2023-11-12 02:22:19,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:19,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464458392] [2023-11-12 02:22:19,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:19,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:19,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:20,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-12 02:22:20,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:20,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-12 02:22:20,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:20,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-12 02:22:20,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:20,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-12 02:22:20,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:20,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:22:20,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:20,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-12 02:22:20,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:20,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-12 02:22:20,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:20,203 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-12 02:22:20,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:20,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464458392] [2023-11-12 02:22:20,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464458392] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:22:20,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111636377] [2023-11-12 02:22:20,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:20,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:20,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:20,205 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:22:20,223 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-12 02:22:20,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:20,700 INFO L262 TraceCheckSpWp]: Trace formula consists of 1250 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:22:20,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:22:20,742 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-12 02:22:20,743 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:22:20,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111636377] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:20,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:22:20,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-11-12 02:22:20,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967348431] [2023-11-12 02:22:20,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:20,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:22:20,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:20,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:22:20,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:22:20,746 INFO L87 Difference]: Start difference. First operand 958 states and 1345 transitions. Second operand has 4 states, 3 states have (on average 26.666666666666668) internal successors, (80), 4 states have internal predecessors, (80), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-12 02:22:20,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:22:20,857 INFO L93 Difference]: Finished difference Result 976 states and 1361 transitions. [2023-11-12 02:22:20,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:22:20,858 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 26.666666666666668) internal successors, (80), 4 states have internal predecessors, (80), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 101 [2023-11-12 02:22:20,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:22:20,865 INFO L225 Difference]: With dead ends: 976 [2023-11-12 02:22:20,865 INFO L226 Difference]: Without dead ends: 974 [2023-11-12 02:22:20,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:22:20,866 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 119 mSDsluCounter, 653 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-12 02:22:20,867 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 1088 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-12 02:22:20,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 974 states. [2023-11-12 02:22:20,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 974 to 956. [2023-11-12 02:22:20,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 805 states have (on average 1.3900621118012422) internal successors, (1119), 819 states have internal predecessors, (1119), 107 states have call successors, (107), 31 states have call predecessors, (107), 31 states have return successors, (107), 107 states have call predecessors, (107), 107 states have call successors, (107) [2023-11-12 02:22:20,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1333 transitions. [2023-11-12 02:22:20,931 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1333 transitions. Word has length 101 [2023-11-12 02:22:20,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:22:20,931 INFO L495 AbstractCegarLoop]: Abstraction has 956 states and 1333 transitions. [2023-11-12 02:22:20,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 26.666666666666668) internal successors, (80), 4 states have internal predecessors, (80), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2023-11-12 02:22:20,932 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1333 transitions. [2023-11-12 02:22:20,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2023-11-12 02:22:20,934 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:22:20,935 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-11-12 02:22:20,948 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-12 02:22:21,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:21,144 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [flexcop_usb_transfer_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, flexcop_usb_transfer_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-12 02:22:21,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:21,144 INFO L85 PathProgramCache]: Analyzing trace with hash -55562860, now seen corresponding path program 1 times [2023-11-12 02:22:21,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:21,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889673931] [2023-11-12 02:22:21,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:21,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:21,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:21,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-12 02:22:21,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:21,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-12 02:22:21,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:21,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-12 02:22:21,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:21,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-12 02:22:21,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:21,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:22:21,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:21,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-12 02:22:21,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:21,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-12 02:22:21,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:21,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2023-11-12 02:22:21,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:21,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-11-12 02:22:21,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:21,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2023-11-12 02:22:21,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:21,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:22:21,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:21,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-12 02:22:21,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:21,929 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2023-11-12 02:22:21,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:21,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889673931] [2023-11-12 02:22:21,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889673931] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:21,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-12 02:22:21,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-12 02:22:21,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429411457] [2023-11-12 02:22:21,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:21,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-12 02:22:21,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:21,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-12 02:22:21,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-12 02:22:21,932 INFO L87 Difference]: Start difference. First operand 956 states and 1333 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-12 02:22:23,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2023-11-12 02:22:24,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:22:24,687 INFO L93 Difference]: Finished difference Result 1510 states and 2097 transitions. [2023-11-12 02:22:24,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:22:24,688 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 118 [2023-11-12 02:22:24,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:22:24,695 INFO L225 Difference]: With dead ends: 1510 [2023-11-12 02:22:24,695 INFO L226 Difference]: Without dead ends: 972 [2023-11-12 02:22:24,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-12 02:22:24,698 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 271 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 57 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-11-12 02:22:24,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 951 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 461 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2023-11-12 02:22:24,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 972 states. [2023-11-12 02:22:24,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 972 to 956. [2023-11-12 02:22:24,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 805 states have (on average 1.3888198757763974) internal successors, (1118), 819 states have internal predecessors, (1118), 107 states have call successors, (107), 31 states have call predecessors, (107), 31 states have return successors, (107), 107 states have call predecessors, (107), 107 states have call successors, (107) [2023-11-12 02:22:24,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1332 transitions. [2023-11-12 02:22:24,765 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1332 transitions. Word has length 118 [2023-11-12 02:22:24,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:22:24,766 INFO L495 AbstractCegarLoop]: Abstraction has 956 states and 1332 transitions. [2023-11-12 02:22:24,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-12 02:22:24,766 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1332 transitions. [2023-11-12 02:22:24,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-11-12 02:22:24,769 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:22:24,769 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:22:24,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-11-12 02:22:24,770 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW === [flexcop_usb_transfer_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, flexcop_usb_transfer_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-12 02:22:24,770 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:24,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1520102377, now seen corresponding path program 1 times [2023-11-12 02:22:24,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:24,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799950174] [2023-11-12 02:22:24,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:24,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:24,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:25,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-12 02:22:25,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:25,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-12 02:22:25,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:25,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-12 02:22:25,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:25,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-12 02:22:25,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:25,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:22:25,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:25,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-12 02:22:25,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:25,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-12 02:22:25,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:25,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-12 02:22:25,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:25,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-12 02:22:25,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:25,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-12 02:22:25,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:25,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:22:25,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:25,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-12 02:22:25,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:25,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-12 02:22:25,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:25,298 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-12 02:22:25,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:25,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799950174] [2023-11-12 02:22:25,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799950174] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:22:25,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966364461] [2023-11-12 02:22:25,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:25,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:25,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:25,301 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:22:25,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-12 02:22:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:25,858 INFO L262 TraceCheckSpWp]: Trace formula consists of 1223 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:22:25,864 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:22:26,132 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-12 02:22:26,132 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:22:26,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [966364461] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:26,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:22:26,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-11-12 02:22:26,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002284266] [2023-11-12 02:22:26,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:26,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-12 02:22:26,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:26,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-12 02:22:26,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:22:26,134 INFO L87 Difference]: Start difference. First operand 956 states and 1332 transitions. Second operand has 4 states, 3 states have (on average 30.666666666666668) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-12 02:22:26,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:22:26,374 INFO L93 Difference]: Finished difference Result 1367 states and 1905 transitions. [2023-11-12 02:22:26,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-12 02:22:26,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 30.666666666666668) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 122 [2023-11-12 02:22:26,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:22:26,384 INFO L225 Difference]: With dead ends: 1367 [2023-11-12 02:22:26,385 INFO L226 Difference]: Without dead ends: 1365 [2023-11-12 02:22:26,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:22:26,386 INFO L413 NwaCegarLoop]: 643 mSDtfsCounter, 635 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-12 02:22:26,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [635 Valid, 926 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-12 02:22:26,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2023-11-12 02:22:26,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 954. [2023-11-12 02:22:26,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 954 states, 805 states have (on average 1.3863354037267082) internal successors, (1116), 817 states have internal predecessors, (1116), 107 states have call successors, (107), 31 states have call predecessors, (107), 31 states have return successors, (107), 107 states have call predecessors, (107), 107 states have call successors, (107) [2023-11-12 02:22:26,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 954 states to 954 states and 1330 transitions. [2023-11-12 02:22:26,514 INFO L78 Accepts]: Start accepts. Automaton has 954 states and 1330 transitions. Word has length 122 [2023-11-12 02:22:26,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:22:26,515 INFO L495 AbstractCegarLoop]: Abstraction has 954 states and 1330 transitions. [2023-11-12 02:22:26,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 30.666666666666668) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2023-11-12 02:22:26,516 INFO L276 IsEmpty]: Start isEmpty. Operand 954 states and 1330 transitions. [2023-11-12 02:22:26,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-11-12 02:22:26,518 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:22:26,518 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:22:26,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-12 02:22:26,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-12 02:22:26,727 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW === [flexcop_usb_transfer_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, flexcop_usb_transfer_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-12 02:22:26,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:26,728 INFO L85 PathProgramCache]: Analyzing trace with hash -121465934, now seen corresponding path program 1 times [2023-11-12 02:22:26,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:26,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791963116] [2023-11-12 02:22:26,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:26,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:26,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:26,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-12 02:22:26,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:26,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-12 02:22:26,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:26,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-12 02:22:26,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:26,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-12 02:22:26,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:27,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:22:27,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:27,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-11-12 02:22:27,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:27,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2023-11-12 02:22:27,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:27,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-11-12 02:22:27,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:27,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2023-11-12 02:22:27,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:27,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2023-11-12 02:22:27,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:27,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:22:27,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:27,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-11-12 02:22:27,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:27,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-11-12 02:22:27,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:27,196 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2023-11-12 02:22:27,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:27,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791963116] [2023-11-12 02:22:27,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791963116] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:22:27,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1186036902] [2023-11-12 02:22:27,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:27,197 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:27,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:27,198 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:22:27,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-12 02:22:27,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:27,706 INFO L262 TraceCheckSpWp]: Trace formula consists of 1224 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-12 02:22:27,711 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:22:27,930 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-11-12 02:22:27,930 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-12 02:22:28,120 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-11-12 02:22:28,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1186036902] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-12 02:22:28,121 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-12 02:22:28,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2023-11-12 02:22:28,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800658463] [2023-11-12 02:22:28,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-12 02:22:28,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-12 02:22:28,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:28,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-12 02:22:28,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-11-12 02:22:28,123 INFO L87 Difference]: Start difference. First operand 954 states and 1330 transitions. Second operand has 9 states, 9 states have (on average 25.77777777777778) internal successors, (232), 8 states have internal predecessors, (232), 6 states have call successors, (36), 4 states have call predecessors, (36), 4 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2023-11-12 02:22:29,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:22:29,783 INFO L93 Difference]: Finished difference Result 2998 states and 4193 transitions. [2023-11-12 02:22:29,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-12 02:22:29,784 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 25.77777777777778) internal successors, (232), 8 states have internal predecessors, (232), 6 states have call successors, (36), 4 states have call predecessors, (36), 4 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) Word has length 123 [2023-11-12 02:22:29,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:22:29,798 INFO L225 Difference]: With dead ends: 2998 [2023-11-12 02:22:29,799 INFO L226 Difference]: Without dead ends: 2060 [2023-11-12 02:22:29,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=112, Invalid=194, Unknown=0, NotChecked=0, Total=306 [2023-11-12 02:22:29,804 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 1477 mSDsluCounter, 1116 mSDsCounter, 0 mSdLazyCounter, 883 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 1383 SdHoareTripleChecker+Invalid, 1102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-12 02:22:29,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1536 Valid, 1383 Invalid, 1102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 883 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-12 02:22:29,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2060 states. [2023-11-12 02:22:29,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2060 to 1543. [2023-11-12 02:22:29,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1310 states have (on average 1.380152671755725) internal successors, (1808), 1322 states have internal predecessors, (1808), 172 states have call successors, (172), 51 states have call predecessors, (172), 51 states have return successors, (172), 172 states have call predecessors, (172), 172 states have call successors, (172) [2023-11-12 02:22:29,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2152 transitions. [2023-11-12 02:22:29,928 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2152 transitions. Word has length 123 [2023-11-12 02:22:29,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:22:29,928 INFO L495 AbstractCegarLoop]: Abstraction has 1543 states and 2152 transitions. [2023-11-12 02:22:29,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 25.77777777777778) internal successors, (232), 8 states have internal predecessors, (232), 6 states have call successors, (36), 4 states have call predecessors, (36), 4 states have return successors, (36), 6 states have call predecessors, (36), 6 states have call successors, (36) [2023-11-12 02:22:29,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2152 transitions. [2023-11-12 02:22:29,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-12 02:22:29,932 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:22:29,932 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:22:29,948 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-12 02:22:30,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:30,143 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [flexcop_usb_transfer_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, flexcop_usb_transfer_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-12 02:22:30,144 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:30,144 INFO L85 PathProgramCache]: Analyzing trace with hash 134331836, now seen corresponding path program 2 times [2023-11-12 02:22:30,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:30,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342599424] [2023-11-12 02:22:30,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:30,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:30,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:31,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-12 02:22:31,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:31,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-12 02:22:31,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:31,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-12 02:22:31,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:31,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-12 02:22:31,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:31,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:22:31,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:31,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-12 02:22:31,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:31,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-12 02:22:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:31,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-12 02:22:31,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:31,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-12 02:22:31,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:31,357 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-11-12 02:22:31,357 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:31,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342599424] [2023-11-12 02:22:31,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342599424] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:22:31,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725320424] [2023-11-12 02:22:31,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-12 02:22:31,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:31,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:31,360 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:22:31,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-12 02:22:31,824 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-11-12 02:22:31,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-12 02:22:31,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 666 conjuncts, 23 conjunts are in the unsatisfiable core [2023-11-12 02:22:31,835 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:22:31,931 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2023-11-12 02:22:31,931 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:22:31,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725320424] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:31,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:22:31,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 10 [2023-11-12 02:22:31,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415785345] [2023-11-12 02:22:31,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:31,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:22:31,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:31,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:22:31,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2023-11-12 02:22:31,935 INFO L87 Difference]: Start difference. First operand 1543 states and 2152 transitions. Second operand has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-12 02:22:32,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-12 02:22:32,163 INFO L93 Difference]: Finished difference Result 3554 states and 5000 transitions. [2023-11-12 02:22:32,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-12 02:22:32,164 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 136 [2023-11-12 02:22:32,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-12 02:22:32,177 INFO L225 Difference]: With dead ends: 3554 [2023-11-12 02:22:32,177 INFO L226 Difference]: Without dead ends: 2027 [2023-11-12 02:22:32,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-11-12 02:22:32,182 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 146 mSDsluCounter, 2024 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 2573 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-12 02:22:32,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 2573 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-12 02:22:32,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2027 states. [2023-11-12 02:22:32,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2027 to 1558. [2023-11-12 02:22:32,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1558 states, 1322 states have (on average 1.3767019667170952) internal successors, (1820), 1334 states have internal predecessors, (1820), 172 states have call successors, (172), 51 states have call predecessors, (172), 54 states have return successors, (187), 175 states have call predecessors, (187), 172 states have call successors, (187) [2023-11-12 02:22:32,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 2179 transitions. [2023-11-12 02:22:32,337 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 2179 transitions. Word has length 136 [2023-11-12 02:22:32,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-12 02:22:32,337 INFO L495 AbstractCegarLoop]: Abstraction has 1558 states and 2179 transitions. [2023-11-12 02:22:32,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.0) internal successors, (90), 5 states have internal predecessors, (90), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-12 02:22:32,338 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 2179 transitions. [2023-11-12 02:22:32,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-11-12 02:22:32,341 INFO L187 NwaCegarLoop]: Found error trace [2023-11-12 02:22:32,341 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-12 02:22:32,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-12 02:22:32,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:32,549 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [flexcop_usb_transfer_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, flexcop_usb_transfer_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2023-11-12 02:22:32,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-12 02:22:32,549 INFO L85 PathProgramCache]: Analyzing trace with hash -289341640, now seen corresponding path program 1 times [2023-11-12 02:22:32,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-12 02:22:32,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274413234] [2023-11-12 02:22:32,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:32,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-12 02:22:32,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:33,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2023-11-12 02:22:33,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:33,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-12 02:22:33,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:33,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-12 02:22:33,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:33,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2023-11-12 02:22:33,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:33,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-12 02:22:33,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:33,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2023-11-12 02:22:33,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:33,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2023-11-12 02:22:33,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:33,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2023-11-12 02:22:33,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:33,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2023-11-12 02:22:33,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:33,608 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2023-11-12 02:22:33,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-12 02:22:33,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274413234] [2023-11-12 02:22:33,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274413234] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-12 02:22:33,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1988957447] [2023-11-12 02:22:33,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-12 02:22:33,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-12 02:22:33,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/z3 [2023-11-12 02:22:33,612 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-12 02:22:33,639 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a5e8d428-0eab-4466-b7ce-50b48233cda0/bin/uautomizer-verify-uTZkv6EMXl/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-12 02:22:34,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-12 02:22:34,261 INFO L262 TraceCheckSpWp]: Trace formula consists of 1458 conjuncts, 19 conjunts are in the unsatisfiable core [2023-11-12 02:22:34,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-12 02:22:34,309 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2023-11-12 02:22:34,317 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-12 02:22:34,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1988957447] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-12 02:22:34,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-12 02:22:34,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 7 [2023-11-12 02:22:34,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513966739] [2023-11-12 02:22:34,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-12 02:22:34,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-12 02:22:34,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-12 02:22:34,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-12 02:22:34,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-12 02:22:34,322 INFO L87 Difference]: Start difference. First operand 1558 states and 2179 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 5 states have internal predecessors, (86), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6)