./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 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70e7e-7a49-4623-815c-fee0d2d811ff/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70e7e-7a49-4623-815c-fee0d2d811ff/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70e7e-7a49-4623-815c-fee0d2d811ff/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70e7e-7a49-4623-815c-fee0d2d811ff/bin/utaipan-ByfvJB40ur/config/TaipanReach.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_e3a70e7e-7a49-4623-815c-fee0d2d811ff/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70e7e-7a49-4623-815c-fee0d2d811ff/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 637058e9c434875c2a607ff053c6fcb810c5a78083685ed0943116abd98a4161 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 23:46:27,078 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:46:27,080 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:46:27,106 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:46:27,107 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:46:27,111 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:46:27,113 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:46:27,116 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:46:27,119 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:46:27,124 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:46:27,126 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:46:27,129 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:46:27,129 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:46:27,134 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:46:27,137 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:46:27,138 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:46:27,140 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:46:27,141 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:46:27,143 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:46:27,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:46:27,152 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:46:27,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:46:27,156 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:46:27,157 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:46:27,167 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:46:27,167 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:46:27,167 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:46:27,169 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:46:27,170 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:46:27,170 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:46:27,171 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:46:27,173 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:46:27,174 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:46:27,176 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:46:27,178 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:46:27,178 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:46:27,179 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:46:27,179 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:46:27,179 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:46:27,180 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:46:27,180 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:46:27,181 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70e7e-7a49-4623-815c-fee0d2d811ff/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-64bit-Taipan_Default.epf [2022-11-25 23:46:27,218 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:46:27,221 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:46:27,222 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:46:27,222 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:46:27,222 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:46:27,223 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:46:27,223 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:46:27,223 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:46:27,223 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:46:27,223 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:46:27,224 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:46:27,225 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:46:27,225 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:46:27,225 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:46:27,225 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:46:27,225 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:46:27,226 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:46:27,226 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:46:27,227 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:46:27,227 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-25 23:46:27,227 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:46:27,227 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:46:27,227 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:46:27,227 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:46:27,228 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:46:27,228 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-25 23:46:27,228 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:46:27,228 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:46:27,229 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:46:27,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:46:27,229 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:46:27,229 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:46:27,230 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:46:27,230 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:46:27,230 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:46:27,230 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:46:27,230 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:46:27,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:46:27,231 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:46:27,231 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:46:27,231 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_e3a70e7e-7a49-4623-815c-fee0d2d811ff/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70e7e-7a49-4623-815c-fee0d2d811ff/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 637058e9c434875c2a607ff053c6fcb810c5a78083685ed0943116abd98a4161 [2022-11-25 23:46:27,510 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:46:27,551 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:46:27,554 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:46:27,555 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:46:27,556 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:46:27,558 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70e7e-7a49-4623-815c-fee0d2d811ff/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--usb--b2c2--b2c2-flexcop-usb.ko-main.cil.out.i [2022-11-25 23:46:30,623 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:46:31,260 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:46:31,261 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70e7e-7a49-4623-815c-fee0d2d811ff/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--usb--b2c2--b2c2-flexcop-usb.ko-main.cil.out.i [2022-11-25 23:46:31,319 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70e7e-7a49-4623-815c-fee0d2d811ff/bin/utaipan-ByfvJB40ur/data/052ac6697/687d46978d4f4f11a31ea28b300d10e7/FLAGe3eed75cf [2022-11-25 23:46:31,341 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70e7e-7a49-4623-815c-fee0d2d811ff/bin/utaipan-ByfvJB40ur/data/052ac6697/687d46978d4f4f11a31ea28b300d10e7 [2022-11-25 23:46:31,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:46:31,348 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:46:31,352 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:46:31,353 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:46:31,357 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:46:31,357 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:46:31" (1/1) ... [2022-11-25 23:46:31,359 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7228edd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:46:31, skipping insertion in model container [2022-11-25 23:46:31,359 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:46:31" (1/1) ... [2022-11-25 23:46:31,368 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:46:31,510 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:46:32,252 WARN L623 FunctionHandler]: Unknown extern function dev_get_drvdata [2022-11-25 23:46:32,261 WARN L623 FunctionHandler]: Unknown extern function dev_set_drvdata [2022-11-25 23:46:32,372 WARN L623 FunctionHandler]: Unknown extern function debug_dma_alloc_coherent [2022-11-25 23:46:32,378 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-11-25 23:46:32,379 WARN L623 FunctionHandler]: Unknown extern function debug_dma_free_coherent [2022-11-25 23:46:32,441 WARN L623 FunctionHandler]: Unknown extern function usb_control_msg [2022-11-25 23:46:32,446 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:32,463 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:32,464 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:32,466 WARN L623 FunctionHandler]: Unknown extern function usb_control_msg [2022-11-25 23:46:32,472 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:32,474 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:32,496 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:32,512 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:32,521 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:32,523 WARN L623 FunctionHandler]: Unknown extern function usb_control_msg [2022-11-25 23:46:32,556 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:32,564 WARN L623 FunctionHandler]: Unknown extern function flexcop_pass_dmx_packets [2022-11-25 23:46:32,565 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:32,567 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:32,570 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:32,584 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:32,585 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:32,587 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:32,589 WARN L623 FunctionHandler]: Unknown extern function usb_submit_urb [2022-11-25 23:46:32,603 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:32,604 WARN L623 FunctionHandler]: Unknown extern function usb_kill_urb [2022-11-25 23:46:32,605 WARN L623 FunctionHandler]: Unknown extern function usb_free_urb [2022-11-25 23:46:32,616 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:32,619 WARN L623 FunctionHandler]: Unknown extern function usb_alloc_urb [2022-11-25 23:46:32,623 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:32,630 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:32,631 WARN L623 FunctionHandler]: Unknown extern function usb_submit_urb [2022-11-25 23:46:32,632 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:32,633 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:32,633 WARN L623 FunctionHandler]: Unknown extern function flexcop_sram_set_dest [2022-11-25 23:46:32,634 WARN L623 FunctionHandler]: Unknown extern function flexcop_wan_set_speed [2022-11-25 23:46:32,635 WARN L623 FunctionHandler]: Unknown extern function flexcop_sram_ctrl [2022-11-25 23:46:32,640 WARN L623 FunctionHandler]: Unknown extern function usb_set_interface [2022-11-25 23:46:32,641 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:32,642 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:32,643 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:32,643 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:32,654 WARN L623 FunctionHandler]: Unknown extern function flexcop_device_kmalloc [2022-11-25 23:46:32,655 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:32,658 WARN L623 FunctionHandler]: Unknown extern function flexcop_device_initialize [2022-11-25 23:46:32,658 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:32,659 WARN L623 FunctionHandler]: Unknown extern function flexcop_device_exit [2022-11-25 23:46:32,660 WARN L623 FunctionHandler]: Unknown extern function flexcop_device_kfree [2022-11-25 23:46:32,664 WARN L623 FunctionHandler]: Unknown extern function flexcop_device_exit [2022-11-25 23:46:32,665 WARN L623 FunctionHandler]: Unknown extern function flexcop_device_kfree [2022-11-25 23:46:32,665 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:32,701 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-11-25 23:46:32,701 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-11-25 23:46:32,702 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-11-25 23:46:32,703 WARN L623 FunctionHandler]: Unknown extern function mutex_trylock [2022-11-25 23:46:32,703 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-11-25 23:46:32,704 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-11-25 23:46:32,705 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-11-25 23:46:32,705 WARN L623 FunctionHandler]: Unknown extern function usb_register_driver [2022-11-25 23:46:32,706 WARN L623 FunctionHandler]: Unknown extern function usb_deregister [2022-11-25 23:46:32,711 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70e7e-7a49-4623-815c-fee0d2d811ff/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--usb--b2c2--b2c2-flexcop-usb.ko-main.cil.out.i[222523,222536] [2022-11-25 23:46:32,821 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:46:32,849 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:46:33,011 WARN L623 FunctionHandler]: Unknown extern function dev_get_drvdata [2022-11-25 23:46:33,013 WARN L623 FunctionHandler]: Unknown extern function dev_set_drvdata [2022-11-25 23:46:33,033 WARN L623 FunctionHandler]: Unknown extern function debug_dma_alloc_coherent [2022-11-25 23:46:33,036 WARN L623 FunctionHandler]: Unknown extern function warn_slowpath_null [2022-11-25 23:46:33,037 WARN L623 FunctionHandler]: Unknown extern function debug_dma_free_coherent [2022-11-25 23:46:33,045 WARN L623 FunctionHandler]: Unknown extern function usb_control_msg [2022-11-25 23:46:33,049 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:33,052 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:33,053 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:33,053 WARN L623 FunctionHandler]: Unknown extern function usb_control_msg [2022-11-25 23:46:33,056 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:33,059 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:33,125 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:33,129 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:33,130 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:33,131 WARN L623 FunctionHandler]: Unknown extern function usb_control_msg [2022-11-25 23:46:33,150 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:33,152 WARN L623 FunctionHandler]: Unknown extern function flexcop_pass_dmx_packets [2022-11-25 23:46:33,160 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:33,161 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:33,162 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:33,163 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:33,164 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:33,165 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:33,166 WARN L623 FunctionHandler]: Unknown extern function usb_submit_urb [2022-11-25 23:46:33,167 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:33,168 WARN L623 FunctionHandler]: Unknown extern function usb_kill_urb [2022-11-25 23:46:33,168 WARN L623 FunctionHandler]: Unknown extern function usb_free_urb [2022-11-25 23:46:33,170 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:33,171 WARN L623 FunctionHandler]: Unknown extern function usb_alloc_urb [2022-11-25 23:46:33,173 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:33,176 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:33,177 WARN L623 FunctionHandler]: Unknown extern function usb_submit_urb [2022-11-25 23:46:33,177 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:33,178 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:33,179 WARN L623 FunctionHandler]: Unknown extern function flexcop_sram_set_dest [2022-11-25 23:46:33,186 WARN L623 FunctionHandler]: Unknown extern function flexcop_wan_set_speed [2022-11-25 23:46:33,193 WARN L623 FunctionHandler]: Unknown extern function flexcop_sram_ctrl [2022-11-25 23:46:33,200 WARN L623 FunctionHandler]: Unknown extern function usb_set_interface [2022-11-25 23:46:33,201 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:33,201 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:33,202 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:33,202 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:33,203 WARN L623 FunctionHandler]: Unknown extern function flexcop_device_kmalloc [2022-11-25 23:46:33,204 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:33,234 WARN L623 FunctionHandler]: Unknown extern function flexcop_device_initialize [2022-11-25 23:46:33,235 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:33,235 WARN L623 FunctionHandler]: Unknown extern function flexcop_device_exit [2022-11-25 23:46:33,236 WARN L623 FunctionHandler]: Unknown extern function flexcop_device_kfree [2022-11-25 23:46:33,237 WARN L623 FunctionHandler]: Unknown extern function flexcop_device_exit [2022-11-25 23:46:33,243 WARN L623 FunctionHandler]: Unknown extern function flexcop_device_kfree [2022-11-25 23:46:33,250 WARN L623 FunctionHandler]: Unknown extern function printk [2022-11-25 23:46:33,255 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-11-25 23:46:33,256 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-11-25 23:46:33,256 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-11-25 23:46:33,257 WARN L623 FunctionHandler]: Unknown extern function mutex_trylock [2022-11-25 23:46:33,258 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-11-25 23:46:33,258 WARN L623 FunctionHandler]: Unknown extern function mutex_lock [2022-11-25 23:46:33,259 WARN L623 FunctionHandler]: Unknown extern function mutex_unlock [2022-11-25 23:46:33,259 WARN L623 FunctionHandler]: Unknown extern function usb_register_driver [2022-11-25 23:46:33,260 WARN L623 FunctionHandler]: Unknown extern function usb_deregister [2022-11-25 23:46:33,261 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70e7e-7a49-4623-815c-fee0d2d811ff/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--usb--b2c2--b2c2-flexcop-usb.ko-main.cil.out.i[222523,222536] [2022-11-25 23:46:33,279 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:46:33,315 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:46:33,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:46:33 WrapperNode [2022-11-25 23:46:33,316 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:46:33,317 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:46:33,318 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:46:33,318 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:46:33,326 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:46:33" (1/1) ... [2022-11-25 23:46:33,409 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:46:33" (1/1) ... [2022-11-25 23:46:33,535 INFO L138 Inliner]: procedures = 127, calls = 982, calls flagged for inlining = 54, calls inlined = 42, statements flattened = 886 [2022-11-25 23:46:33,542 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:46:33,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:46:33,543 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:46:33,543 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:46:33,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:46:33" (1/1) ... [2022-11-25 23:46:33,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:46:33" (1/1) ... [2022-11-25 23:46:33,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:46:33" (1/1) ... [2022-11-25 23:46:33,583 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:46:33" (1/1) ... [2022-11-25 23:46:33,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:46:33" (1/1) ... [2022-11-25 23:46:33,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:46:33" (1/1) ... [2022-11-25 23:46:33,632 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:46:33" (1/1) ... [2022-11-25 23:46:33,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:46:33" (1/1) ... [2022-11-25 23:46:33,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:46:33,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:46:33,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:46:33,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:46:33,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:46:33" (1/1) ... [2022-11-25 23:46:33,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:46:33,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70e7e-7a49-4623-815c-fee0d2d811ff/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:46:33,684 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70e7e-7a49-4623-815c-fee0d2d811ff/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:46:33,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70e7e-7a49-4623-815c-fee0d2d811ff/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:46:33,729 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2022-11-25 23:46:33,729 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2022-11-25 23:46:33,729 INFO L130 BoogieDeclarations]: Found specification of procedure flexcop_device_exit [2022-11-25 23:46:33,729 INFO L138 BoogieDeclarations]: Found implementation of procedure flexcop_device_exit [2022-11-25 23:46:33,729 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-11-25 23:46:33,730 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-11-25 23:46:33,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-25 23:46:33,730 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-25 23:46:33,730 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-25 23:46:33,730 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-25 23:46:33,730 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-25 23:46:33,730 INFO L130 BoogieDeclarations]: Found specification of procedure flexcop_usb_exit [2022-11-25 23:46:33,731 INFO L138 BoogieDeclarations]: Found implementation of procedure flexcop_usb_exit [2022-11-25 23:46:33,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-25 23:46:33,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-25 23:46:33,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-25 23:46:33,731 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-25 23:46:33,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-25 23:46:33,731 INFO L130 BoogieDeclarations]: Found specification of procedure flexcop_device_kfree [2022-11-25 23:46:33,732 INFO L138 BoogieDeclarations]: Found implementation of procedure flexcop_device_kfree [2022-11-25 23:46:33,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-25 23:46:33,732 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:46:33,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-25 23:46:33,732 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-25 23:46:33,732 INFO L130 BoogieDeclarations]: Found specification of procedure flexcop_usb_transfer_exit [2022-11-25 23:46:33,732 INFO L138 BoogieDeclarations]: Found implementation of procedure flexcop_usb_transfer_exit [2022-11-25 23:46:33,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-25 23:46:33,733 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-11-25 23:46:33,734 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-11-25 23:46:33,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:46:33,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:46:33,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:46:34,303 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:46:34,306 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:46:36,158 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:46:36,628 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:46:36,628 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-25 23:46:36,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:46:36 BoogieIcfgContainer [2022-11-25 23:46:36,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:46:36,634 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:46:36,634 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:46:36,638 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:46:36,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:46:31" (1/3) ... [2022-11-25 23:46:36,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41ff909b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:46:36, skipping insertion in model container [2022-11-25 23:46:36,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:46:33" (2/3) ... [2022-11-25 23:46:36,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41ff909b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:46:36, skipping insertion in model container [2022-11-25 23:46:36,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:46:36" (3/3) ... [2022-11-25 23:46:36,641 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--media--usb--b2c2--b2c2-flexcop-usb.ko-main.cil.out.i [2022-11-25 23:46:36,663 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:46:36,663 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2022-11-25 23:46:36,727 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:46:36,735 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@6f319c6b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:46:36,736 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-11-25 23:46:36,743 INFO L276 IsEmpty]: Start isEmpty. Operand has 161 states, 100 states have (on average 1.6) internal successors, (160), 130 states have internal predecessors, (160), 24 states have call successors, (24), 11 states have call predecessors, (24), 11 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-11-25 23:46:36,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-25 23:46:36,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:46:36,755 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:46:36,755 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [flexcop_usb_transfer_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, flexcop_usb_transfer_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-25 23:46:36,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:46:36,762 INFO L85 PathProgramCache]: Analyzing trace with hash 402957393, now seen corresponding path program 1 times [2022-11-25 23:46:36,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:46:36,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078213099] [2022-11-25 23:46:36,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:46:36,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:46:37,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:46:37,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:46:37,367 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:46:37,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078213099] [2022-11-25 23:46:37,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078213099] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:46:37,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:46:37,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:46:37,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262809843] [2022-11-25 23:46:37,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:46:37,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:46:37,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:46:37,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:46:37,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:46:37,431 INFO L87 Difference]: Start difference. First operand has 161 states, 100 states have (on average 1.6) internal successors, (160), 130 states have internal predecessors, (160), 24 states have call successors, (24), 11 states have call predecessors, (24), 11 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 23:46:38,895 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:46:40,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:46:41,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:46:41,122 INFO L93 Difference]: Finished difference Result 333 states and 447 transitions. [2022-11-25 23:46:41,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:46:41,125 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-11-25 23:46:41,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:46:41,134 INFO L225 Difference]: With dead ends: 333 [2022-11-25 23:46:41,134 INFO L226 Difference]: Without dead ends: 152 [2022-11-25 23:46:41,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:46:41,141 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 23 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-25 23:46:41,142 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 307 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 85 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2022-11-25 23:46:41,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-11-25 23:46:41,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2022-11-25 23:46:41,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 102 states have (on average 1.5294117647058822) internal successors, (156), 122 states have internal predecessors, (156), 21 states have call successors, (21), 10 states have call predecessors, (21), 10 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-11-25 23:46:41,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 198 transitions. [2022-11-25 23:46:41,197 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 198 transitions. Word has length 14 [2022-11-25 23:46:41,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:46:41,198 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 198 transitions. [2022-11-25 23:46:41,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 23:46:41,199 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 198 transitions. [2022-11-25 23:46:41,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-25 23:46:41,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:46:41,201 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] [2022-11-25 23:46:41,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:46:41,201 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [flexcop_usb_transfer_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, flexcop_usb_transfer_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-25 23:46:41,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:46:41,202 INFO L85 PathProgramCache]: Analyzing trace with hash 613670166, now seen corresponding path program 1 times [2022-11-25 23:46:41,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:46:41,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950658822] [2022-11-25 23:46:41,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:46:41,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:46:41,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:46:41,408 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 23:46:41,409 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:46:41,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950658822] [2022-11-25 23:46:41,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950658822] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:46:41,409 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:46:41,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:46:41,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986269608] [2022-11-25 23:46:41,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:46:41,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:46:41,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:46:41,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:46:41,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:46:41,413 INFO L87 Difference]: Start difference. First operand 152 states and 198 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 23:46:43,483 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 [] [2022-11-25 23:46:43,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:46:43,807 INFO L93 Difference]: Finished difference Result 382 states and 499 transitions. [2022-11-25 23:46:43,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:46:43,807 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-11-25 23:46:43,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:46:43,810 INFO L225 Difference]: With dead ends: 382 [2022-11-25 23:46:43,810 INFO L226 Difference]: Without dead ends: 231 [2022-11-25 23:46:43,812 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 [2022-11-25 23:46:43,813 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 115 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 10 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-25 23:46:43,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 488 Invalid, 168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 157 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-11-25 23:46:43,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2022-11-25 23:46:43,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 224. [2022-11-25 23:46:43,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 154 states have (on average 1.5) internal successors, (231), 175 states have internal predecessors, (231), 33 states have call successors, (33), 18 states have call predecessors, (33), 18 states have return successors, (33), 32 states have call predecessors, (33), 33 states have call successors, (33) [2022-11-25 23:46:43,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 297 transitions. [2022-11-25 23:46:43,843 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 297 transitions. Word has length 22 [2022-11-25 23:46:43,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:46:43,843 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 297 transitions. [2022-11-25 23:46:43,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-25 23:46:43,844 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 297 transitions. [2022-11-25 23:46:43,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-25 23:46:43,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:46:43,845 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] [2022-11-25 23:46:43,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 23:46:43,846 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting flexcop_usb_transfer_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [flexcop_usb_transfer_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, flexcop_usb_transfer_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-25 23:46:43,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:46:43,847 INFO L85 PathProgramCache]: Analyzing trace with hash 159895748, now seen corresponding path program 1 times [2022-11-25 23:46:43,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:46:43,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086516352] [2022-11-25 23:46:43,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:46:43,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:46:43,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:46:44,027 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:46:44,027 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:46:44,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086516352] [2022-11-25 23:46:44,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086516352] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:46:44,028 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:46:44,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:46:44,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632516556] [2022-11-25 23:46:44,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:46:44,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:46:44,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:46:44,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:46:44,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:46:44,031 INFO L87 Difference]: Start difference. First operand 224 states and 297 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) 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) [2022-11-25 23:46:46,082 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 [] [2022-11-25 23:46:46,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:46:46,235 INFO L93 Difference]: Finished difference Result 409 states and 549 transitions. [2022-11-25 23:46:46,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:46:46,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) 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 [2022-11-25 23:46:46,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:46:46,238 INFO L225 Difference]: With dead ends: 409 [2022-11-25 23:46:46,239 INFO L226 Difference]: Without dead ends: 186 [2022-11-25 23:46:46,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:46:46,241 INFO L413 NwaCegarLoop]: 153 mSDtfsCounter, 26 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:46:46,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 283 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 83 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-11-25 23:46:46,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-11-25 23:46:46,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 169. [2022-11-25 23:46:46,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 118 states have (on average 1.5254237288135593) internal successors, (180), 138 states have internal predecessors, (180), 21 states have call successors, (21), 11 states have call predecessors, (21), 11 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-11-25 23:46:46,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 222 transitions. [2022-11-25 23:46:46,258 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 222 transitions. Word has length 23 [2022-11-25 23:46:46,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:46:46,259 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 222 transitions. [2022-11-25 23:46:46,259 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) 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) [2022-11-25 23:46:46,259 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 222 transitions. [2022-11-25 23:46:46,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-25 23:46:46,261 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:46:46,261 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] [2022-11-25 23:46:46,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 23:46:46,261 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW === [flexcop_usb_transfer_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, flexcop_usb_transfer_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-25 23:46:46,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:46:46,262 INFO L85 PathProgramCache]: Analyzing trace with hash 28370398, now seen corresponding path program 1 times [2022-11-25 23:46:46,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:46:46,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847797441] [2022-11-25 23:46:46,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:46:46,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:46:46,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:46:46,660 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 23:46:46,660 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:46:46,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847797441] [2022-11-25 23:46:46,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847797441] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:46:46,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:46:46,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 23:46:46,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449535487] [2022-11-25 23:46:46,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:46:46,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:46:46,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:46:46,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:46:46,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:46:46,666 INFO L87 Difference]: Start difference. First operand 169 states and 222 transitions. Second operand has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 23:46:48,272 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.57s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:46:49,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:46:49,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:46:49,930 INFO L93 Difference]: Finished difference Result 337 states and 443 transitions. [2022-11-25 23:46:49,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:46:49,931 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 1 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 29 [2022-11-25 23:46:49,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:46:49,934 INFO L225 Difference]: With dead ends: 337 [2022-11-25 23:46:49,934 INFO L226 Difference]: Without dead ends: 333 [2022-11-25 23:46:49,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:46:49,936 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 154 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 306 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:46:49,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 306 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-25 23:46:49,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-11-25 23:46:49,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 318. [2022-11-25 23:46:49,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 235 states have (on average 1.5106382978723405) internal successors, (355), 257 states have internal predecessors, (355), 42 states have call successors, (42), 22 states have call predecessors, (42), 22 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-25 23:46:49,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 439 transitions. [2022-11-25 23:46:49,974 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 439 transitions. Word has length 29 [2022-11-25 23:46:49,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:46:49,975 INFO L495 AbstractCegarLoop]: Abstraction has 318 states and 439 transitions. [2022-11-25 23:46:49,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-25 23:46:49,975 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 439 transitions. [2022-11-25 23:46:49,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-25 23:46:49,977 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:46:49,978 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] [2022-11-25 23:46:49,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 23:46:49,978 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [flexcop_usb_transfer_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, flexcop_usb_transfer_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-25 23:46:49,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:46:49,979 INFO L85 PathProgramCache]: Analyzing trace with hash 2106482416, now seen corresponding path program 1 times [2022-11-25 23:46:49,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:46:49,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141496909] [2022-11-25 23:46:49,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:46:49,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:46:50,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:46:50,286 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 23:46:50,286 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:46:50,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141496909] [2022-11-25 23:46:50,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141496909] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:46:50,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:46:50,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:46:50,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852479013] [2022-11-25 23:46:50,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:46:50,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:46:50,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:46:50,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:46:50,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:46:50,296 INFO L87 Difference]: Start difference. First operand 318 states and 439 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 23:46:52,348 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 [] [2022-11-25 23:46:52,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:46:52,642 INFO L93 Difference]: Finished difference Result 789 states and 1117 transitions. [2022-11-25 23:46:52,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:46:52,643 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (4), 2 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 40 [2022-11-25 23:46:52,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:46:52,647 INFO L225 Difference]: With dead ends: 789 [2022-11-25 23:46:52,647 INFO L226 Difference]: Without dead ends: 472 [2022-11-25 23:46:52,649 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 [2022-11-25 23:46:52,650 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 112 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-25 23:46:52,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 469 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 139 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-11-25 23:46:52,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2022-11-25 23:46:52,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 322. [2022-11-25 23:46:52,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 322 states, 239 states have (on average 1.502092050209205) internal successors, (359), 261 states have internal predecessors, (359), 42 states have call successors, (42), 22 states have call predecessors, (42), 22 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-25 23:46:52,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 322 states to 322 states and 443 transitions. [2022-11-25 23:46:52,684 INFO L78 Accepts]: Start accepts. Automaton has 322 states and 443 transitions. Word has length 40 [2022-11-25 23:46:52,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:46:52,684 INFO L495 AbstractCegarLoop]: Abstraction has 322 states and 443 transitions. [2022-11-25 23:46:52,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 23:46:52,685 INFO L276 IsEmpty]: Start isEmpty. Operand 322 states and 443 transitions. [2022-11-25 23:46:52,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-25 23:46:52,687 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:46:52,687 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-25 23:46:52,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 23:46:52,688 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)] === [2022-11-25 23:46:52,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:46:52,688 INFO L85 PathProgramCache]: Analyzing trace with hash -903978552, now seen corresponding path program 1 times [2022-11-25 23:46:52,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:46:52,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463944036] [2022-11-25 23:46:52,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:46:52,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:46:52,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:46:52,968 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 23:46:52,969 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:46:52,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463944036] [2022-11-25 23:46:52,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463944036] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:46:52,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:46:52,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:46:52,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714703070] [2022-11-25 23:46:52,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:46:52,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:46:52,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:46:52,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:46:52,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:46:52,972 INFO L87 Difference]: Start difference. First operand 322 states and 443 transitions. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 23:46:54,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-25 23:46:55,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:46:55,040 INFO L93 Difference]: Finished difference Result 680 states and 928 transitions. [2022-11-25 23:46:55,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:46:55,041 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 2 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 42 [2022-11-25 23:46:55,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:46:55,043 INFO L225 Difference]: With dead ends: 680 [2022-11-25 23:46:55,043 INFO L226 Difference]: Without dead ends: 359 [2022-11-25 23:46:55,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:46:55,045 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 140 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:46:55,046 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 226 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-25 23:46:55,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-11-25 23:46:55,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 331. [2022-11-25 23:46:55,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 239 states have (on average 1.4728033472803348) internal successors, (352), 261 states have internal predecessors, (352), 43 states have call successors, (43), 30 states have call predecessors, (43), 30 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-11-25 23:46:55,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 438 transitions. [2022-11-25 23:46:55,071 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 438 transitions. Word has length 42 [2022-11-25 23:46:55,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:46:55,072 INFO L495 AbstractCegarLoop]: Abstraction has 331 states and 438 transitions. [2022-11-25 23:46:55,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-25 23:46:55,072 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 438 transitions. [2022-11-25 23:46:55,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-25 23:46:55,074 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:46:55,074 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-25 23:46:55,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 23:46:55,075 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)] === [2022-11-25 23:46:55,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:46:55,076 INFO L85 PathProgramCache]: Analyzing trace with hash -277220700, now seen corresponding path program 1 times [2022-11-25 23:46:55,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:46:55,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121024410] [2022-11-25 23:46:55,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:46:55,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:46:55,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:46:55,315 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 23:46:55,315 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:46:55,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121024410] [2022-11-25 23:46:55,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121024410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:46:55,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:46:55,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-25 23:46:55,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348101289] [2022-11-25 23:46:55,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:46:55,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:46:55,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:46:55,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:46:55,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:46:55,318 INFO L87 Difference]: Start difference. First operand 331 states and 438 transitions. Second operand has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-25 23:46:57,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:46:57,355 INFO L93 Difference]: Finished difference Result 661 states and 881 transitions. [2022-11-25 23:46:57,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:46:57,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 44 [2022-11-25 23:46:57,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:46:57,358 INFO L225 Difference]: With dead ends: 661 [2022-11-25 23:46:57,358 INFO L226 Difference]: Without dead ends: 340 [2022-11-25 23:46:57,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:46:57,360 INFO L413 NwaCegarLoop]: 142 mSDtfsCounter, 1 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:46:57,360 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 281 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-25 23:46:57,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2022-11-25 23:46:57,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2022-11-25 23:46:57,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 340 states, 248 states have (on average 1.4556451612903225) internal successors, (361), 270 states have internal predecessors, (361), 43 states have call successors, (43), 30 states have call predecessors, (43), 30 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2022-11-25 23:46:57,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 447 transitions. [2022-11-25 23:46:57,384 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 447 transitions. Word has length 44 [2022-11-25 23:46:57,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:46:57,384 INFO L495 AbstractCegarLoop]: Abstraction has 340 states and 447 transitions. [2022-11-25 23:46:57,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 16.0) internal successors, (32), 3 states have internal predecessors, (32), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-25 23:46:57,385 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 447 transitions. [2022-11-25 23:46:57,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-25 23:46:57,386 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:46:57,387 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] [2022-11-25 23:46:57,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 23:46:57,387 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)] === [2022-11-25 23:46:57,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:46:57,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1163385542, now seen corresponding path program 1 times [2022-11-25 23:46:57,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:46:57,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869356673] [2022-11-25 23:46:57,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:46:57,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:46:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:46:57,694 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 23:46:57,695 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:46:57,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869356673] [2022-11-25 23:46:57,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869356673] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:46:57,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:46:57,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:46:57,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080401335] [2022-11-25 23:46:57,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:46:57,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:46:57,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:46:57,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:46:57,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:46:57,699 INFO L87 Difference]: Start difference. First operand 340 states and 447 transitions. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 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) [2022-11-25 23:46:59,744 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 [] [2022-11-25 23:46:59,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:46:59,952 INFO L93 Difference]: Finished difference Result 826 states and 1118 transitions. [2022-11-25 23:46:59,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:46:59,953 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 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 46 [2022-11-25 23:46:59,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:46:59,956 INFO L225 Difference]: With dead ends: 826 [2022-11-25 23:46:59,956 INFO L226 Difference]: Without dead ends: 496 [2022-11-25 23:46:59,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:46:59,958 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 77 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:46:59,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 345 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 95 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-11-25 23:46:59,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2022-11-25 23:46:59,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 390. [2022-11-25 23:46:59,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 292 states have (on average 1.4486301369863013) internal successors, (423), 314 states have internal predecessors, (423), 49 states have call successors, (49), 30 states have call predecessors, (49), 30 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-11-25 23:46:59,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 521 transitions. [2022-11-25 23:46:59,989 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 521 transitions. Word has length 46 [2022-11-25 23:46:59,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:46:59,990 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 521 transitions. [2022-11-25 23:46:59,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 2 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) [2022-11-25 23:46:59,990 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 521 transitions. [2022-11-25 23:46:59,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-25 23:46:59,991 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:46:59,991 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-25 23:46:59,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 23:46:59,992 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)] === [2022-11-25 23:46:59,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:46:59,993 INFO L85 PathProgramCache]: Analyzing trace with hash 540334481, now seen corresponding path program 1 times [2022-11-25 23:46:59,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:46:59,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414853739] [2022-11-25 23:46:59,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:46:59,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:47:00,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:47:00,292 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 23:47:00,293 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:47:00,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414853739] [2022-11-25 23:47:00,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414853739] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:47:00,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070612489] [2022-11-25 23:47:00,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:47:00,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:47:00,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70e7e-7a49-4623-815c-fee0d2d811ff/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:47:00,299 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70e7e-7a49-4623-815c-fee0d2d811ff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:47:00,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70e7e-7a49-4623-815c-fee0d2d811ff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 23:47:00,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:47:00,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 967 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 23:47:00,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:47:00,856 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 23:47:00,857 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:47:00,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070612489] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:47:00,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:47:00,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [3] total 8 [2022-11-25 23:47:00,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507655481] [2022-11-25 23:47:00,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:47:00,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 23:47:00,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:47:00,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 23:47:00,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-25 23:47:00,860 INFO L87 Difference]: Start difference. First operand 390 states and 521 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 23:47:02,927 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 [] [2022-11-25 23:47:03,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:47:03,338 INFO L93 Difference]: Finished difference Result 713 states and 953 transitions. [2022-11-25 23:47:03,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 23:47:03,339 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 47 [2022-11-25 23:47:03,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:47:03,341 INFO L225 Difference]: With dead ends: 713 [2022-11-25 23:47:03,342 INFO L226 Difference]: Without dead ends: 476 [2022-11-25 23:47:03,344 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-11-25 23:47:03,346 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 130 mSDsluCounter, 617 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-25 23:47:03,347 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [131 Valid, 780 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 252 Invalid, 1 Unknown, 0 Unchecked, 2.4s Time] [2022-11-25 23:47:03,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2022-11-25 23:47:03,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 394. [2022-11-25 23:47:03,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 294 states have (on average 1.445578231292517) internal successors, (425), 316 states have internal predecessors, (425), 51 states have call successors, (51), 30 states have call predecessors, (51), 30 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-11-25 23:47:03,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 527 transitions. [2022-11-25 23:47:03,379 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 527 transitions. Word has length 47 [2022-11-25 23:47:03,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:47:03,379 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 527 transitions. [2022-11-25 23:47:03,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-25 23:47:03,380 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 527 transitions. [2022-11-25 23:47:03,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-25 23:47:03,382 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:47:03,383 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-25 23:47:03,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70e7e-7a49-4623-815c-fee0d2d811ff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 23:47:03,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70e7e-7a49-4623-815c-fee0d2d811ff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:47:03,590 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting flexcop_usb_transfer_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [flexcop_usb_transfer_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, flexcop_usb_transfer_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-25 23:47:03,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:47:03,591 INFO L85 PathProgramCache]: Analyzing trace with hash -725136377, now seen corresponding path program 1 times [2022-11-25 23:47:03,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:47:03,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474416534] [2022-11-25 23:47:03,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:47:03,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:47:03,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:47:03,827 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 23:47:03,827 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:47:03,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474416534] [2022-11-25 23:47:03,827 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474416534] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:47:03,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:47:03,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:47:03,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442631194] [2022-11-25 23:47:03,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:47:03,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:47:03,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:47:03,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:47:03,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:47:03,830 INFO L87 Difference]: Start difference. First operand 394 states and 527 transitions. Second operand has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 23:47:05,879 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 [] [2022-11-25 23:47:06,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:47:06,116 INFO L93 Difference]: Finished difference Result 890 states and 1210 transitions. [2022-11-25 23:47:06,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:47:06,117 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 53 [2022-11-25 23:47:06,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:47:06,119 INFO L225 Difference]: With dead ends: 890 [2022-11-25 23:47:06,120 INFO L226 Difference]: Without dead ends: 506 [2022-11-25 23:47:06,121 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 [2022-11-25 23:47:06,122 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 222 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 22 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:47:06,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 374 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 112 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-11-25 23:47:06,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2022-11-25 23:47:06,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 394. [2022-11-25 23:47:06,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 394 states, 294 states have (on average 1.4387755102040816) internal successors, (423), 314 states have internal predecessors, (423), 51 states have call successors, (51), 30 states have call predecessors, (51), 30 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-11-25 23:47:06,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 394 states to 394 states and 525 transitions. [2022-11-25 23:47:06,152 INFO L78 Accepts]: Start accepts. Automaton has 394 states and 525 transitions. Word has length 53 [2022-11-25 23:47:06,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:47:06,152 INFO L495 AbstractCegarLoop]: Abstraction has 394 states and 525 transitions. [2022-11-25 23:47:06,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.25) internal successors, (41), 4 states have internal predecessors, (41), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 23:47:06,153 INFO L276 IsEmpty]: Start isEmpty. Operand 394 states and 525 transitions. [2022-11-25 23:47:06,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-25 23:47:06,154 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:47:06,154 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:47:06,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 23:47:06,155 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting flexcop_usb_transfer_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [flexcop_usb_transfer_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, flexcop_usb_transfer_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-25 23:47:06,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:47:06,155 INFO L85 PathProgramCache]: Analyzing trace with hash 675167323, now seen corresponding path program 1 times [2022-11-25 23:47:06,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:47:06,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162448847] [2022-11-25 23:47:06,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:47:06,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:47:06,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:47:06,525 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 23:47:06,526 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:47:06,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162448847] [2022-11-25 23:47:06,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162448847] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:47:06,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856925614] [2022-11-25 23:47:06,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:47:06,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:47:06,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70e7e-7a49-4623-815c-fee0d2d811ff/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:47:06,531 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70e7e-7a49-4623-815c-fee0d2d811ff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:47:06,562 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70e7e-7a49-4623-815c-fee0d2d811ff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 23:47:07,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:47:07,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 1164 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:47:07,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:47:07,103 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 23:47:07,104 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:47:07,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856925614] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:47:07,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:47:07,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-25 23:47:07,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659852496] [2022-11-25 23:47:07,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:47:07,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:47:07,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:47:07,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:47:07,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:47:07,107 INFO L87 Difference]: Start difference. First operand 394 states and 525 transitions. Second operand has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-25 23:47:09,150 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 [] [2022-11-25 23:47:09,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:47:09,335 INFO L93 Difference]: Finished difference Result 394 states and 525 transitions. [2022-11-25 23:47:09,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:47:09,336 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (6), 1 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 54 [2022-11-25 23:47:09,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:47:09,338 INFO L225 Difference]: With dead ends: 394 [2022-11-25 23:47:09,339 INFO L226 Difference]: Without dead ends: 393 [2022-11-25 23:47:09,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:47:09,340 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 21 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:47:09,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 271 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 79 Invalid, 1 Unknown, 0 Unchecked, 2.2s Time] [2022-11-25 23:47:09,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-11-25 23:47:09,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 393. [2022-11-25 23:47:09,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 393 states, 294 states have (on average 1.4285714285714286) internal successors, (420), 313 states have internal predecessors, (420), 51 states have call successors, (51), 30 states have call predecessors, (51), 30 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-11-25 23:47:09,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 393 states to 393 states and 522 transitions. [2022-11-25 23:47:09,370 INFO L78 Accepts]: Start accepts. Automaton has 393 states and 522 transitions. Word has length 54 [2022-11-25 23:47:09,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:47:09,371 INFO L495 AbstractCegarLoop]: Abstraction has 393 states and 522 transitions. [2022-11-25 23:47:09,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 13.666666666666666) internal successors, (41), 4 states have internal predecessors, (41), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-11-25 23:47:09,371 INFO L276 IsEmpty]: Start isEmpty. Operand 393 states and 522 transitions. [2022-11-25 23:47:09,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-25 23:47:09,372 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:47:09,372 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-25 23:47:09,387 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70e7e-7a49-4623-815c-fee0d2d811ff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-25 23:47:09,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70e7e-7a49-4623-815c-fee0d2d811ff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:47:09,582 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __create_pipeErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [flexcop_usb_transfer_exitErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, flexcop_usb_transfer_exitErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 23 more)] === [2022-11-25 23:47:09,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:47:09,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1746970929, now seen corresponding path program 1 times [2022-11-25 23:47:09,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:47:09,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755506484] [2022-11-25 23:47:09,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:47:09,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:47:09,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:47:09,908 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 23:47:09,909 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:47:09,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755506484] [2022-11-25 23:47:09,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755506484] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:47:09,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [471958992] [2022-11-25 23:47:09,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:47:09,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:47:09,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70e7e-7a49-4623-815c-fee0d2d811ff/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:47:09,911 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70e7e-7a49-4623-815c-fee0d2d811ff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:47:09,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e3a70e7e-7a49-4623-815c-fee0d2d811ff/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 23:47:10,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:47:10,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 1204 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 23:47:10,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:47:10,479 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 23:47:10,479 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:47:10,540 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 23:47:10,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [471958992] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:47:10,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1816363311] [2022-11-25 23:47:10,572 INFO L159 IcfgInterpreter]: Started Sifa with 50 locations of interest [2022-11-25 23:47:10,581 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:47:10,585 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:47:10,592 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:47:10,593 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:47:17,463 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-25 23:47:17,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-25 23:47:19,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:47:20,340 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:47:20,500 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:47:20,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:47:20,781 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:47:21,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:47:21,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:47:21,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:47:21,969 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:47:22,173 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:47:22,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:47:22,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:47:23,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:47:23,597 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:47:23,836 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:47:24,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:47:25,084 INFO L217 Elim1Store]: Index analysis took 5940 ms [2022-11-25 23:48:05,024 WARN L233 SmtUtils]: Spent 21.92s on a formula simplification. DAG size of input: 96 DAG size of output: 62 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-25 23:48:05,026 INFO L321 Elim1Store]: treesize reduction 301, result has 25.5 percent of original size [2022-11-25 23:48:05,026 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 37 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 477 treesize of output 542 [2022-11-25 23:48:05,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:48:05,594 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:48:05,595 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:48:05,595 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:48:05,596 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-25 23:48:05,648 INFO L217 Elim1Store]: Index analysis took 478 ms [2022-11-25 23:48:12,100 INFO L321 Elim1Store]: treesize reduction 311, result has 23.0 percent of original size [2022-11-25 23:48:12,101 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 22 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 465 treesize of output 520 [2022-11-25 23:48:12,223 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:48:13,304 INFO L321 Elim1Store]: treesize reduction 125, result has 13.2 percent of original size [2022-11-25 23:48:13,304 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 22 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 8 case distinctions, treesize of input 167 treesize of output 182 [2022-11-25 23:48:13,409 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:48:13,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:48:13,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:48:13,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:48:13,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:48:13,447 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:48:13,451 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:48:13,455 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:48:13,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:48:13,462 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:48:20,604 WARN L233 SmtUtils]: Spent 6.74s on a formula simplification. DAG size of input: 213 DAG size of output: 113 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-25 23:48:20,605 INFO L321 Elim1Store]: treesize reduction 584, result has 32.3 percent of original size [2022-11-25 23:48:20,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 33 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 17 case distinctions, treesize of input 149 treesize of output 349 [2022-11-25 23:48:20,684 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:48:21,118 INFO L321 Elim1Store]: treesize reduction 125, result has 13.2 percent of original size [2022-11-25 23:48:21,119 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 22 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 8 case distinctions, treesize of input 157 treesize of output 172 [2022-11-25 23:48:21,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:48:21,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:48:21,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:48:21,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:48:21,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:48:21,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:48:21,212 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:48:21,214 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:48:21,216 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:48:21,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:48:21,916 INFO L321 Elim1Store]: treesize reduction 598, result has 30.4 percent of original size [2022-11-25 23:48:21,916 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 32 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 17 case distinctions, treesize of input 135 treesize of output 321 [2022-11-25 23:48:26,844 INFO L321 Elim1Store]: treesize reduction 56, result has 33.3 percent of original size [2022-11-25 23:48:26,844 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 44 treesize of output 38 [2022-11-25 23:48:28,125 INFO L321 Elim1Store]: treesize reduction 27, result has 41.3 percent of original size [2022-11-25 23:48:28,125 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 42 [2022-11-25 23:48:28,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:48:28,350 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:48:28,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:48:28,355 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:48:28,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:48:28,359 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:48:28,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-25 23:48:29,017 INFO L321 Elim1Store]: treesize reduction 579, result has 28.3 percent of original size [2022-11-25 23:48:29,017 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 19 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 7 case distinctions, treesize of input 108 treesize of output 249 [2022-11-25 23:48:29,159 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 22