./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 1ebada516f0ccae5e55b91f6e0fe5802f70171054dc79c047f46877ad506c65e --- 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-5e519f3 [2022-11-02 20:41:32,073 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:41:32,075 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:41:32,105 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:41:32,106 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:41:32,107 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:41:32,109 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:41:32,111 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:41:32,113 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:41:32,114 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:41:32,115 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:41:32,117 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:41:32,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:41:32,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:41:32,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:41:32,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:41:32,122 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:41:32,124 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:41:32,126 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:41:32,128 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:41:32,130 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:41:32,131 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:41:32,133 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:41:32,134 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:41:32,138 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:41:32,139 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:41:32,139 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:41:32,140 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:41:32,141 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:41:32,142 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:41:32,142 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:41:32,143 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:41:32,144 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:41:32,145 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:41:32,147 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:41:32,147 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:41:32,148 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:41:32,148 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:41:32,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:41:32,150 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:41:32,151 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:41:32,152 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:41:32,175 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:41:32,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:41:32,176 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:41:32,177 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:41:32,178 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:41:32,178 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:41:32,179 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:41:32,179 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:41:32,180 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:41:32,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:41:32,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:41:32,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:41:32,181 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:41:32,181 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:41:32,181 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:41:32,182 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:41:32,182 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:41:32,182 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:41:32,182 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:41:32,183 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:41:32,183 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:41:32,183 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:41:32,183 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:41:32,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:41:32,184 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:41:32,184 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:41:32,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:41:32,185 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:41:32,185 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:41:32,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:41:32,185 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_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ebada516f0ccae5e55b91f6e0fe5802f70171054dc79c047f46877ad506c65e [2022-11-02 20:41:32,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:41:32,545 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:41:32,549 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:41:32,552 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:41:32,553 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:41:32,560 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i [2022-11-02 20:41:32,650 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/data/d2c08e97a/bc8d3e0347fe426a855c82f3701c10ae/FLAG39088f0e2 [2022-11-02 20:41:33,626 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:41:33,629 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i [2022-11-02 20:41:33,664 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/data/d2c08e97a/bc8d3e0347fe426a855c82f3701c10ae/FLAG39088f0e2 [2022-11-02 20:41:34,080 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/data/d2c08e97a/bc8d3e0347fe426a855c82f3701c10ae [2022-11-02 20:41:34,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:41:34,087 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:41:34,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:41:34,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:41:34,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:41:34,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:41:34" (1/1) ... [2022-11-02 20:41:34,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b0b5469 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:34, skipping insertion in model container [2022-11-02 20:41:34,103 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:41:34" (1/1) ... [2022-11-02 20:41:34,112 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:41:34,249 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:41:34,642 WARN L230 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_cb30d981-79ce-48b7-83fb-c3ef5f168a28/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4499,4512] [2022-11-02 20:41:34,651 WARN L230 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_cb30d981-79ce-48b7-83fb-c3ef5f168a28/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4559,4572] [2022-11-02 20:41:36,099 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:36,100 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:36,102 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:36,103 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:36,106 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:36,131 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:36,134 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:36,137 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:36,138 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:36,142 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:36,145 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:36,146 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:36,146 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:36,699 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-02 20:41:36,702 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-02 20:41:36,703 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-02 20:41:36,704 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-02 20:41:36,706 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-02 20:41:36,706 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-02 20:41:36,707 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-02 20:41:36,708 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-02 20:41:36,709 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-02 20:41:36,709 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-02 20:41:36,890 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-02 20:41:36,924 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:36,931 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,004 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,005 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,006 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,006 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,007 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,007 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,008 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,009 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,010 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,010 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,010 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,011 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,011 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,018 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,019 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,020 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,020 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,029 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,030 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,039 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,041 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,041 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,055 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,055 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,056 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,062 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:41:37,119 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:41:37,136 WARN L230 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_cb30d981-79ce-48b7-83fb-c3ef5f168a28/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4499,4512] [2022-11-02 20:41:37,137 WARN L230 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_cb30d981-79ce-48b7-83fb-c3ef5f168a28/sv-benchmarks/c/aws-c-common/aws_priority_queue_remove_harness.i[4559,4572] [2022-11-02 20:41:37,188 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,190 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,194 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,195 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,196 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,203 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,210 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,211 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,212 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,213 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,215 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,215 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,216 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,295 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-02 20:41:37,296 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-02 20:41:37,297 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-02 20:41:37,298 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-02 20:41:37,299 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-02 20:41:37,300 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-02 20:41:37,300 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-02 20:41:37,301 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-02 20:41:37,302 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-02 20:41:37,303 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-02 20:41:37,358 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-02 20:41:37,392 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,410 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,462 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,463 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,463 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,464 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,465 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,466 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,466 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,467 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,467 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,468 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,469 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,469 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,470 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,471 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,472 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,473 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,475 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,479 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,479 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,494 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,495 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,496 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,511 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,511 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,512 WARN L1543 CHandler]: Possible shadowing of function index [2022-11-02 20:41:37,517 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:41:37,716 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:41:37,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:37 WrapperNode [2022-11-02 20:41:37,717 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:41:37,718 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:41:37,719 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:41:37,719 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:41:37,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:37" (1/1) ... [2022-11-02 20:41:37,856 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:37" (1/1) ... [2022-11-02 20:41:37,990 INFO L138 Inliner]: procedures = 697, calls = 1921, calls flagged for inlining = 60, calls inlined = 15, statements flattened = 1060 [2022-11-02 20:41:37,991 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:41:37,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:41:37,992 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:41:37,992 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:41:38,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:37" (1/1) ... [2022-11-02 20:41:38,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:37" (1/1) ... [2022-11-02 20:41:38,032 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:37" (1/1) ... [2022-11-02 20:41:38,032 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:37" (1/1) ... [2022-11-02 20:41:38,106 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:37" (1/1) ... [2022-11-02 20:41:38,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:37" (1/1) ... [2022-11-02 20:41:38,141 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:37" (1/1) ... [2022-11-02 20:41:38,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:37" (1/1) ... [2022-11-02 20:41:38,159 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:41:38,160 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:41:38,160 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:41:38,160 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:41:38,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:37" (1/1) ... [2022-11-02 20:41:38,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:41:38,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:41:38,210 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:41:38,220 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:41:38,259 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2022-11-02 20:41:38,260 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2022-11-02 20:41:38,260 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2022-11-02 20:41:38,260 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2022-11-02 20:41:38,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:41:38,261 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-11-02 20:41:38,261 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-11-02 20:41:38,261 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-11-02 20:41:38,262 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-11-02 20:41:38,262 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-11-02 20:41:38,262 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-11-02 20:41:38,262 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2022-11-02 20:41:38,262 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2022-11-02 20:41:38,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-02 20:41:38,264 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:41:38,267 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-02 20:41:38,267 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-02 20:41:38,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-02 20:41:38,268 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-02 20:41:38,268 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_node [2022-11-02 20:41:38,269 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_node [2022-11-02 20:41:38,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:41:38,270 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:41:38,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:41:38,277 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2022-11-02 20:41:38,277 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2022-11-02 20:41:38,277 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-11-02 20:41:38,277 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-11-02 20:41:38,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:41:38,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:41:38,278 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-02 20:41:38,278 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-02 20:41:38,278 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-02 20:41:38,278 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-02 20:41:38,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-02 20:41:38,279 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-11-02 20:41:38,279 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-11-02 20:41:38,279 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2022-11-02 20:41:38,279 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2022-11-02 20:41:38,279 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2022-11-02 20:41:38,279 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2022-11-02 20:41:38,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-02 20:41:38,280 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-02 20:41:38,280 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-02 20:41:38,280 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-02 20:41:38,280 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-11-02 20:41:38,280 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-11-02 20:41:38,281 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_pop_back [2022-11-02 20:41:38,281 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_pop_back [2022-11-02 20:41:38,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:41:38,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:41:38,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-02 20:41:38,281 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2022-11-02 20:41:38,282 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2022-11-02 20:41:38,282 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-11-02 20:41:38,282 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-11-02 20:41:38,282 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-02 20:41:38,282 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-02 20:41:38,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:41:38,283 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-11-02 20:41:38,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-11-02 20:41:38,283 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2022-11-02 20:41:38,283 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2022-11-02 20:41:38,283 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-02 20:41:38,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-02 20:41:38,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:41:38,284 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at [2022-11-02 20:41:38,284 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at [2022-11-02 20:41:38,844 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:41:38,847 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:41:41,774 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:41:41,788 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:41:41,788 INFO L300 CfgBuilder]: Removed 8 assume(true) statements. [2022-11-02 20:41:41,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:41:41 BoogieIcfgContainer [2022-11-02 20:41:41,791 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:41:41,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:41:41,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:41:41,799 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:41:41,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:41:34" (1/3) ... [2022-11-02 20:41:41,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600bea8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:41:41, skipping insertion in model container [2022-11-02 20:41:41,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:41:37" (2/3) ... [2022-11-02 20:41:41,801 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600bea8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:41:41, skipping insertion in model container [2022-11-02 20:41:41,801 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:41:41" (3/3) ... [2022-11-02 20:41:41,803 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_remove_harness.i [2022-11-02 20:41:41,829 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:41:41,830 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-02 20:41:41,953 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:41:41,966 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@413dea43, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:41:41,968 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-02 20:41:41,978 INFO L276 IsEmpty]: Start isEmpty. Operand has 460 states, 270 states have (on average 1.2703703703703704) internal successors, (343), 275 states have internal predecessors, (343), 160 states have call successors, (160), 27 states have call predecessors, (160), 27 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) [2022-11-02 20:41:42,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-02 20:41:42,015 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:42,017 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:42,017 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:41:42,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:42,026 INFO L85 PathProgramCache]: Analyzing trace with hash 207530193, now seen corresponding path program 1 times [2022-11-02 20:41:42,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:42,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946800796] [2022-11-02 20:41:42,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:42,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:42,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:42,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:41:42,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:42,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:41:42,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:42,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 20:41:42,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:42,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 20:41:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:42,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:41:42,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:42,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:41:42,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:42,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-02 20:41:42,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:42,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:41:42,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:42,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:41:42,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:43,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-02 20:41:43,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:43,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-02 20:41:43,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:43,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-02 20:41:43,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:43,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:41:43,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:43,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-02 20:41:43,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:43,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:41:43,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:43,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-02 20:41:43,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:43,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-02 20:41:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:43,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-02 20:41:43,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:43,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-02 20:41:43,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:43,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-02 20:41:43,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:43,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-02 20:41:43,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:43,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-02 20:41:43,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:43,171 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-11-02 20:41:43,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:43,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946800796] [2022-11-02 20:41:43,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946800796] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:43,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:43,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:41:43,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228908430] [2022-11-02 20:41:43,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:43,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:41:43,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:43,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:41:43,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:41:43,225 INFO L87 Difference]: Start difference. First operand has 460 states, 270 states have (on average 1.2703703703703704) internal successors, (343), 275 states have internal predecessors, (343), 160 states have call successors, (160), 27 states have call predecessors, (160), 27 states have return successors, (160), 160 states have call predecessors, (160), 160 states have call successors, (160) Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-02 20:41:45,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.51s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:41:47,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:47,966 INFO L93 Difference]: Finished difference Result 1349 states and 2508 transitions. [2022-11-02 20:41:47,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:41:47,970 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 141 [2022-11-02 20:41:47,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:47,997 INFO L225 Difference]: With dead ends: 1349 [2022-11-02 20:41:47,997 INFO L226 Difference]: Without dead ends: 895 [2022-11-02 20:41:48,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:41:48,011 INFO L413 NwaCegarLoop]: 844 mSDtfsCounter, 532 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 1636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 728 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:48,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [648 Valid, 1527 Invalid, 1636 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [728 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-02 20:41:48,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 895 states. [2022-11-02 20:41:48,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 895 to 453. [2022-11-02 20:41:48,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 265 states have (on average 1.2339622641509433) internal successors, (327), 268 states have internal predecessors, (327), 160 states have call successors, (160), 27 states have call predecessors, (160), 26 states have return successors, (158), 158 states have call predecessors, (158), 158 states have call successors, (158) [2022-11-02 20:41:48,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 645 transitions. [2022-11-02 20:41:48,156 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 645 transitions. Word has length 141 [2022-11-02 20:41:48,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:48,157 INFO L495 AbstractCegarLoop]: Abstraction has 453 states and 645 transitions. [2022-11-02 20:41:48,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 2 states have internal predecessors, (53), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-02 20:41:48,157 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 645 transitions. [2022-11-02 20:41:48,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-02 20:41:48,164 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:48,164 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:48,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:41:48,165 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:41:48,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:48,166 INFO L85 PathProgramCache]: Analyzing trace with hash 1080700984, now seen corresponding path program 1 times [2022-11-02 20:41:48,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:48,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533091966] [2022-11-02 20:41:48,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:48,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:48,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:48,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:41:48,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:48,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:41:48,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:48,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 20:41:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:48,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 20:41:48,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:48,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:41:48,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:48,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:41:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:48,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-02 20:41:48,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:49,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:41:49,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:49,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:41:49,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:49,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-02 20:41:49,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:49,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-02 20:41:49,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:49,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-02 20:41:49,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:49,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:41:49,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:49,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-02 20:41:49,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:49,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:41:49,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:49,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-02 20:41:49,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:49,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-02 20:41:49,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:49,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-02 20:41:49,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:49,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-11-02 20:41:49,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:49,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-02 20:41:49,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:49,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-02 20:41:49,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:49,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-02 20:41:49,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:49,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-02 20:41:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:49,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-02 20:41:49,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:49,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-02 20:41:49,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:49,317 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2022-11-02 20:41:49,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:49,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533091966] [2022-11-02 20:41:49,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533091966] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:41:49,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102998671] [2022-11-02 20:41:49,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:49,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:49,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:41:49,326 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:41:49,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:41:49,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:50,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 2501 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:41:50,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:41:50,186 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-11-02 20:41:50,186 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:41:50,187 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102998671] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:50,187 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:41:50,187 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-11-02 20:41:50,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41002301] [2022-11-02 20:41:50,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:50,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:41:50,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:50,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:41:50,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:41:50,191 INFO L87 Difference]: Start difference. First operand 453 states and 645 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-02 20:41:52,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:52,370 INFO L93 Difference]: Finished difference Result 872 states and 1259 transitions. [2022-11-02 20:41:52,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:41:52,371 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 156 [2022-11-02 20:41:52,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:52,387 INFO L225 Difference]: With dead ends: 872 [2022-11-02 20:41:52,387 INFO L226 Difference]: Without dead ends: 455 [2022-11-02 20:41:52,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:41:52,396 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 665 mSDsluCounter, 1651 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 687 SdHoareTripleChecker+Valid, 2232 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:52,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [687 Valid, 2232 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-02 20:41:52,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2022-11-02 20:41:52,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 455. [2022-11-02 20:41:52,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 266 states have (on average 1.2330827067669172) internal successors, (328), 270 states have internal predecessors, (328), 160 states have call successors, (160), 27 states have call predecessors, (160), 27 states have return successors, (171), 158 states have call predecessors, (171), 158 states have call successors, (171) [2022-11-02 20:41:52,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 659 transitions. [2022-11-02 20:41:52,479 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 659 transitions. Word has length 156 [2022-11-02 20:41:52,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:52,482 INFO L495 AbstractCegarLoop]: Abstraction has 455 states and 659 transitions. [2022-11-02 20:41:52,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-11-02 20:41:52,482 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 659 transitions. [2022-11-02 20:41:52,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-02 20:41:52,487 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:52,487 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:52,538 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:41:52,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:52,706 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:41:52,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:52,707 INFO L85 PathProgramCache]: Analyzing trace with hash 651465952, now seen corresponding path program 1 times [2022-11-02 20:41:52,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:52,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078610811] [2022-11-02 20:41:52,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:52,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:52,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:53,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:41:53,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:53,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 20:41:53,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:53,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-02 20:41:53,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:53,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-02 20:41:53,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:53,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:41:53,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:53,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:41:53,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:53,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-02 20:41:53,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:53,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-02 20:41:53,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:53,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 20:41:53,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:53,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-02 20:41:53,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:53,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 20:41:53,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:53,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-02 20:41:53,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:53,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-02 20:41:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:53,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:41:53,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:53,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-02 20:41:53,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:53,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 20:41:53,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:53,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-02 20:41:53,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:53,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-02 20:41:53,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:53,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-02 20:41:53,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:53,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-11-02 20:41:53,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:53,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-02 20:41:53,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:53,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-02 20:41:53,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:53,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-11-02 20:41:53,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:53,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-02 20:41:53,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:53,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-02 20:41:53,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:53,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-11-02 20:41:53,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:53,905 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 251 trivial. 0 not checked. [2022-11-02 20:41:53,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:53,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078610811] [2022-11-02 20:41:53,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078610811] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:41:53,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441516422] [2022-11-02 20:41:53,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:53,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:53,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:41:53,908 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:41:53,936 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:41:54,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:54,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 2551 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:41:54,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:41:54,801 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-11-02 20:41:54,802 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:41:54,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441516422] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:54,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:41:54,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-11-02 20:41:54,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866772511] [2022-11-02 20:41:54,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:54,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:41:54,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:54,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:41:54,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:41:54,805 INFO L87 Difference]: Start difference. First operand 455 states and 659 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 4 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-11-02 20:41:58,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:41:58,075 INFO L93 Difference]: Finished difference Result 895 states and 1330 transitions. [2022-11-02 20:41:58,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:41:58,077 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 4 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 164 [2022-11-02 20:41:58,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:41:58,082 INFO L225 Difference]: With dead ends: 895 [2022-11-02 20:41:58,082 INFO L226 Difference]: Without dead ends: 476 [2022-11-02 20:41:58,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2022-11-02 20:41:58,086 INFO L413 NwaCegarLoop]: 577 mSDtfsCounter, 691 mSDsluCounter, 2717 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 3294 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:41:58,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 3294 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-02 20:41:58,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2022-11-02 20:41:58,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 474. [2022-11-02 20:41:58,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 282 states have (on average 1.2411347517730495) internal successors, (350), 286 states have internal predecessors, (350), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (190), 161 states have call predecessors, (190), 160 states have call successors, (190) [2022-11-02 20:41:58,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 702 transitions. [2022-11-02 20:41:58,127 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 702 transitions. Word has length 164 [2022-11-02 20:41:58,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:41:58,128 INFO L495 AbstractCegarLoop]: Abstraction has 474 states and 702 transitions. [2022-11-02 20:41:58,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 4 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-11-02 20:41:58,129 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 702 transitions. [2022-11-02 20:41:58,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-02 20:41:58,132 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:41:58,132 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:41:58,175 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:41:58,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-02 20:41:58,348 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:41:58,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:58,349 INFO L85 PathProgramCache]: Analyzing trace with hash 706817890, now seen corresponding path program 1 times [2022-11-02 20:41:58,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:58,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421796003] [2022-11-02 20:41:58,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:58,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:58,475 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:41:58,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1608633847] [2022-11-02 20:41:58,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:58,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:58,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:41:58,477 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:41:58,486 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:41:59,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:59,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 2692 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:41:59,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:41:59,381 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-11-02 20:41:59,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:41:59,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:59,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421796003] [2022-11-02 20:41:59,382 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:41:59,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608633847] [2022-11-02 20:41:59,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608633847] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:41:59,383 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:41:59,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:41:59,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299859893] [2022-11-02 20:41:59,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:59,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:41:59,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:59,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:41:59,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:41:59,386 INFO L87 Difference]: Start difference. First operand 474 states and 702 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-11-02 20:42:01,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:42:03,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:03,231 INFO L93 Difference]: Finished difference Result 920 states and 1403 transitions. [2022-11-02 20:42:03,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:42:03,232 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 179 [2022-11-02 20:42:03,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:03,238 INFO L225 Difference]: With dead ends: 920 [2022-11-02 20:42:03,238 INFO L226 Difference]: Without dead ends: 482 [2022-11-02 20:42:03,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-02 20:42:03,242 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 689 mSDsluCounter, 2174 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 2749 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:03,243 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [711 Valid, 2749 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-02 20:42:03,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2022-11-02 20:42:03,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 474. [2022-11-02 20:42:03,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 282 states have (on average 1.2411347517730495) internal successors, (350), 286 states have internal predecessors, (350), 162 states have call successors, (162), 27 states have call predecessors, (162), 28 states have return successors, (190), 161 states have call predecessors, (190), 160 states have call successors, (190) [2022-11-02 20:42:03,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 702 transitions. [2022-11-02 20:42:03,283 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 702 transitions. Word has length 179 [2022-11-02 20:42:03,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:03,284 INFO L495 AbstractCegarLoop]: Abstraction has 474 states and 702 transitions. [2022-11-02 20:42:03,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 4 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-11-02 20:42:03,284 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 702 transitions. [2022-11-02 20:42:03,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-11-02 20:42:03,288 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:03,288 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:03,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:42:03,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:42:03,516 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:03,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:03,517 INFO L85 PathProgramCache]: Analyzing trace with hash -548515061, now seen corresponding path program 1 times [2022-11-02 20:42:03,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:03,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199623700] [2022-11-02 20:42:03,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:03,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:03,612 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:42:03,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [309797236] [2022-11-02 20:42:03,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:03,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:42:03,613 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:42:03,614 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:42:03,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:42:04,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:04,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 2764 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:42:04,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:42:04,553 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2022-11-02 20:42:04,553 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:42:04,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:04,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199623700] [2022-11-02 20:42:04,554 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:42:04,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309797236] [2022-11-02 20:42:04,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309797236] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:04,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:04,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:42:04,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031690903] [2022-11-02 20:42:04,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:04,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:42:04,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:04,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:42:04,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:42:04,557 INFO L87 Difference]: Start difference. First operand 474 states and 702 transitions. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2022-11-02 20:42:06,957 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:42:07,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:07,662 INFO L93 Difference]: Finished difference Result 1029 states and 1532 transitions. [2022-11-02 20:42:07,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-02 20:42:07,663 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) Word has length 195 [2022-11-02 20:42:07,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:07,668 INFO L225 Difference]: With dead ends: 1029 [2022-11-02 20:42:07,668 INFO L226 Difference]: Without dead ends: 552 [2022-11-02 20:42:07,672 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:42:07,673 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 390 mSDsluCounter, 3831 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 65 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 391 SdHoareTripleChecker+Valid, 4412 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:07,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [391 Valid, 4412 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 728 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2022-11-02 20:42:07,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2022-11-02 20:42:07,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 534. [2022-11-02 20:42:07,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 329 states have (on average 1.2401215805471124) internal successors, (408), 333 states have internal predecessors, (408), 168 states have call successors, (168), 34 states have call predecessors, (168), 35 states have return successors, (196), 167 states have call predecessors, (196), 166 states have call successors, (196) [2022-11-02 20:42:07,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 772 transitions. [2022-11-02 20:42:07,715 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 772 transitions. Word has length 195 [2022-11-02 20:42:07,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:07,715 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 772 transitions. [2022-11-02 20:42:07,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 9 states have internal predecessors, (89), 5 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (26), 5 states have call predecessors, (26), 5 states have call successors, (26) [2022-11-02 20:42:07,716 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 772 transitions. [2022-11-02 20:42:07,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-02 20:42:07,719 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:07,720 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:07,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:42:07,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:42:07,937 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:07,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:07,937 INFO L85 PathProgramCache]: Analyzing trace with hash -2018600789, now seen corresponding path program 2 times [2022-11-02 20:42:07,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:07,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472348260] [2022-11-02 20:42:07,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:07,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:08,051 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:42:08,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1774486399] [2022-11-02 20:42:08,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:42:08,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:42:08,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:42:08,053 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:42:08,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:42:09,339 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:42:09,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:42:09,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 2905 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:42:09,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:42:09,475 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-02 20:42:09,475 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:42:09,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:09,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472348260] [2022-11-02 20:42:09,476 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:42:09,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1774486399] [2022-11-02 20:42:09,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1774486399] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:09,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:09,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:42:09,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010025140] [2022-11-02 20:42:09,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:09,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:42:09,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:09,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:42:09,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:42:09,479 INFO L87 Difference]: Start difference. First operand 534 states and 772 transitions. Second operand has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 7 states have internal predecessors, (86), 4 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-02 20:42:11,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:42:12,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:12,545 INFO L93 Difference]: Finished difference Result 938 states and 1391 transitions. [2022-11-02 20:42:12,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:42:12,546 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 7 states have internal predecessors, (86), 4 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) Word has length 210 [2022-11-02 20:42:12,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:12,552 INFO L225 Difference]: With dead ends: 938 [2022-11-02 20:42:12,553 INFO L226 Difference]: Without dead ends: 536 [2022-11-02 20:42:12,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:42:12,559 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 680 mSDsluCounter, 2194 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 2774 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:12,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 2774 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-02 20:42:12,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2022-11-02 20:42:12,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 536. [2022-11-02 20:42:12,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 330 states have (on average 1.2393939393939395) internal successors, (409), 335 states have internal predecessors, (409), 168 states have call successors, (168), 34 states have call predecessors, (168), 36 states have return successors, (207), 167 states have call predecessors, (207), 166 states have call successors, (207) [2022-11-02 20:42:12,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 784 transitions. [2022-11-02 20:42:12,614 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 784 transitions. Word has length 210 [2022-11-02 20:42:12,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:12,616 INFO L495 AbstractCegarLoop]: Abstraction has 536 states and 784 transitions. [2022-11-02 20:42:12,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 7 states have internal predecessors, (86), 4 states have call successors, (28), 2 states have call predecessors, (28), 3 states have return successors, (26), 3 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-02 20:42:12,617 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 784 transitions. [2022-11-02 20:42:12,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-11-02 20:42:12,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:12,622 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:12,671 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:42:12,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-02 20:42:12,836 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:12,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:12,837 INFO L85 PathProgramCache]: Analyzing trace with hash 470878035, now seen corresponding path program 1 times [2022-11-02 20:42:12,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:12,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648894981] [2022-11-02 20:42:12,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:12,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:12,949 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:42:12,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1271078932] [2022-11-02 20:42:12,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:12,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:42:12,950 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:42:12,951 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:42:12,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:42:13,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:13,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 2955 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:42:13,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:42:13,857 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-02 20:42:13,857 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:42:13,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:13,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648894981] [2022-11-02 20:42:13,858 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:42:13,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271078932] [2022-11-02 20:42:13,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271078932] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:13,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:13,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-02 20:42:13,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768183158] [2022-11-02 20:42:13,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:13,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:42:13,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:13,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:42:13,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:42:13,861 INFO L87 Difference]: Start difference. First operand 536 states and 784 transitions. Second operand has 9 states, 8 states have (on average 11.5) internal successors, (92), 9 states have internal predecessors, (92), 5 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2022-11-02 20:42:17,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:17,529 INFO L93 Difference]: Finished difference Result 943 states and 1416 transitions. [2022-11-02 20:42:17,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:42:17,530 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.5) internal successors, (92), 9 states have internal predecessors, (92), 5 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) Word has length 218 [2022-11-02 20:42:17,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:17,535 INFO L225 Difference]: With dead ends: 943 [2022-11-02 20:42:17,535 INFO L226 Difference]: Without dead ends: 539 [2022-11-02 20:42:17,539 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:42:17,540 INFO L413 NwaCegarLoop]: 581 mSDtfsCounter, 696 mSDsluCounter, 3266 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 3847 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:17,540 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 3847 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-02 20:42:17,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2022-11-02 20:42:17,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 537. [2022-11-02 20:42:17,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 331 states have (on average 1.2386706948640482) internal successors, (410), 336 states have internal predecessors, (410), 168 states have call successors, (168), 34 states have call predecessors, (168), 36 states have return successors, (207), 167 states have call predecessors, (207), 166 states have call successors, (207) [2022-11-02 20:42:17,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 785 transitions. [2022-11-02 20:42:17,582 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 785 transitions. Word has length 218 [2022-11-02 20:42:17,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:17,582 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 785 transitions. [2022-11-02 20:42:17,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.5) internal successors, (92), 9 states have internal predecessors, (92), 5 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2022-11-02 20:42:17,583 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 785 transitions. [2022-11-02 20:42:17,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2022-11-02 20:42:17,586 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:17,587 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:17,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:42:17,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:42:17,800 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:17,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:17,801 INFO L85 PathProgramCache]: Analyzing trace with hash -914550263, now seen corresponding path program 2 times [2022-11-02 20:42:17,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:17,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246278390] [2022-11-02 20:42:17,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:17,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:17,891 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:42:17,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1557431627] [2022-11-02 20:42:17,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:42:17,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:42:17,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:42:17,893 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:42:17,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:42:19,080 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:42:19,080 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:42:19,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 3096 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:42:19,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:42:19,240 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-11-02 20:42:19,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:42:19,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:19,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246278390] [2022-11-02 20:42:19,241 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:42:19,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1557431627] [2022-11-02 20:42:19,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1557431627] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:19,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:19,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:42:19,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060902590] [2022-11-02 20:42:19,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:19,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:42:19,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:19,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:42:19,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:42:19,244 INFO L87 Difference]: Start difference. First operand 537 states and 785 transitions. Second operand has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2022-11-02 20:42:20,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:42:22,944 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:42:23,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:23,893 INFO L93 Difference]: Finished difference Result 947 states and 1428 transitions. [2022-11-02 20:42:23,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:42:23,894 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) Word has length 233 [2022-11-02 20:42:23,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:23,899 INFO L225 Difference]: With dead ends: 947 [2022-11-02 20:42:23,899 INFO L226 Difference]: Without dead ends: 542 [2022-11-02 20:42:23,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:42:23,903 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 702 mSDsluCounter, 2707 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 3282 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:23,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [724 Valid, 3282 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-02 20:42:23,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2022-11-02 20:42:23,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 534. [2022-11-02 20:42:23,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 329 states have (on average 1.2401215805471124) internal successors, (408), 333 states have internal predecessors, (408), 168 states have call successors, (168), 34 states have call predecessors, (168), 35 states have return successors, (194), 167 states have call predecessors, (194), 166 states have call successors, (194) [2022-11-02 20:42:23,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 770 transitions. [2022-11-02 20:42:23,946 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 770 transitions. Word has length 233 [2022-11-02 20:42:23,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:23,947 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 770 transitions. [2022-11-02 20:42:23,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 12.714285714285714) internal successors, (89), 8 states have internal predecessors, (89), 5 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 4 states have call predecessors, (27), 5 states have call successors, (27) [2022-11-02 20:42:23,947 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 770 transitions. [2022-11-02 20:42:23,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-11-02 20:42:23,952 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:23,952 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:23,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:42:24,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:42:24,176 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:24,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:24,177 INFO L85 PathProgramCache]: Analyzing trace with hash -668018766, now seen corresponding path program 1 times [2022-11-02 20:42:24,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:24,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89005682] [2022-11-02 20:42:24,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:24,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:24,275 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:42:24,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1064899500] [2022-11-02 20:42:24,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:24,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:42:24,276 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:42:24,277 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:42:24,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:42:25,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:25,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 3168 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:42:25,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:42:25,389 INFO L134 CoverageAnalysis]: Checked inductivity of 369 backedges. 180 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2022-11-02 20:42:25,389 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:42:25,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:25,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89005682] [2022-11-02 20:42:25,390 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:42:25,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1064899500] [2022-11-02 20:42:25,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1064899500] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:25,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:25,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 20:42:25,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583299743] [2022-11-02 20:42:25,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:25,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 20:42:25,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:25,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 20:42:25,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:42:25,393 INFO L87 Difference]: Start difference. First operand 534 states and 770 transitions. Second operand has 10 states, 9 states have (on average 11.444444444444445) internal successors, (103), 10 states have internal predecessors, (103), 6 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (28), 5 states have call predecessors, (28), 6 states have call successors, (28) [2022-11-02 20:42:28,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.73s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:42:30,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:30,835 INFO L93 Difference]: Finished difference Result 954 states and 1421 transitions. [2022-11-02 20:42:30,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:42:30,836 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 11.444444444444445) internal successors, (103), 10 states have internal predecessors, (103), 6 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (28), 5 states have call predecessors, (28), 6 states have call successors, (28) Word has length 249 [2022-11-02 20:42:30,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:30,841 INFO L225 Difference]: With dead ends: 954 [2022-11-02 20:42:30,841 INFO L226 Difference]: Without dead ends: 552 [2022-11-02 20:42:30,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:42:30,853 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 710 mSDsluCounter, 3709 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 760 SdHoareTripleChecker+Valid, 4278 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:30,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [760 Valid, 4278 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-02 20:42:30,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2022-11-02 20:42:30,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 534. [2022-11-02 20:42:30,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 329 states have (on average 1.2401215805471124) internal successors, (408), 333 states have internal predecessors, (408), 168 states have call successors, (168), 34 states have call predecessors, (168), 35 states have return successors, (194), 167 states have call predecessors, (194), 166 states have call successors, (194) [2022-11-02 20:42:30,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 770 transitions. [2022-11-02 20:42:30,936 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 770 transitions. Word has length 249 [2022-11-02 20:42:30,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:30,937 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 770 transitions. [2022-11-02 20:42:30,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 11.444444444444445) internal successors, (103), 10 states have internal predecessors, (103), 6 states have call successors, (30), 2 states have call predecessors, (30), 4 states have return successors, (28), 5 states have call predecessors, (28), 6 states have call successors, (28) [2022-11-02 20:42:30,937 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 770 transitions. [2022-11-02 20:42:30,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2022-11-02 20:42:30,942 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:30,943 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:30,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:42:31,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:42:31,168 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:31,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:31,169 INFO L85 PathProgramCache]: Analyzing trace with hash -729173346, now seen corresponding path program 2 times [2022-11-02 20:42:31,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:31,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702824021] [2022-11-02 20:42:31,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:31,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:31,280 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:42:31,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [486895231] [2022-11-02 20:42:31,280 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:42:31,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:42:31,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:42:31,282 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:42:31,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 20:42:32,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:42:32,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:42:32,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 3309 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:42:32,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:42:32,475 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2022-11-02 20:42:32,475 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:42:32,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:32,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702824021] [2022-11-02 20:42:32,476 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:42:32,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486895231] [2022-11-02 20:42:32,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486895231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:32,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:32,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:42:32,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873667047] [2022-11-02 20:42:32,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:32,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:42:32,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:32,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:42:32,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:42:32,480 INFO L87 Difference]: Start difference. First operand 534 states and 770 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 5 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-02 20:42:35,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:42:36,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:36,469 INFO L93 Difference]: Finished difference Result 940 states and 1381 transitions. [2022-11-02 20:42:36,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:42:36,470 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 5 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) Word has length 264 [2022-11-02 20:42:36,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:36,474 INFO L225 Difference]: With dead ends: 940 [2022-11-02 20:42:36,474 INFO L226 Difference]: Without dead ends: 546 [2022-11-02 20:42:36,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:42:36,478 INFO L413 NwaCegarLoop]: 608 mSDtfsCounter, 76 mSDsluCounter, 3461 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 4069 SdHoareTripleChecker+Invalid, 392 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:36,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 4069 Invalid, 392 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-02 20:42:36,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 546 states. [2022-11-02 20:42:36,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 546 to 546. [2022-11-02 20:42:36,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 335 states have (on average 1.2388059701492538) internal successors, (415), 339 states have internal predecessors, (415), 173 states have call successors, (173), 35 states have call predecessors, (173), 36 states have return successors, (199), 172 states have call predecessors, (199), 171 states have call successors, (199) [2022-11-02 20:42:36,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 787 transitions. [2022-11-02 20:42:36,517 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 787 transitions. Word has length 264 [2022-11-02 20:42:36,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:36,517 INFO L495 AbstractCegarLoop]: Abstraction has 546 states and 787 transitions. [2022-11-02 20:42:36,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 5 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (26), 5 states have call predecessors, (26), 4 states have call successors, (26) [2022-11-02 20:42:36,518 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 787 transitions. [2022-11-02 20:42:36,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-11-02 20:42:36,523 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:36,523 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:36,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:42:36,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 20:42:36,736 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:36,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:36,736 INFO L85 PathProgramCache]: Analyzing trace with hash -213333290, now seen corresponding path program 1 times [2022-11-02 20:42:36,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:36,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228549171] [2022-11-02 20:42:36,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:36,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:36,851 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:42:36,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [981404179] [2022-11-02 20:42:36,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:36,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:42:36,852 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:42:36,853 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:42:36,861 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 20:42:37,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:37,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 3591 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:42:37,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:42:38,092 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 260 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2022-11-02 20:42:38,093 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:42:38,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:38,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228549171] [2022-11-02 20:42:38,093 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:42:38,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981404179] [2022-11-02 20:42:38,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981404179] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:38,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:38,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:42:38,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809011134] [2022-11-02 20:42:38,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:38,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:42:38,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:38,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:42:38,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:42:38,096 INFO L87 Difference]: Start difference. First operand 546 states and 787 transitions. Second operand has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-02 20:42:40,964 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:42:41,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:41,330 INFO L93 Difference]: Finished difference Result 1071 states and 1606 transitions. [2022-11-02 20:42:41,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:42:41,331 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 294 [2022-11-02 20:42:41,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:41,336 INFO L225 Difference]: With dead ends: 1071 [2022-11-02 20:42:41,336 INFO L226 Difference]: Without dead ends: 600 [2022-11-02 20:42:41,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:42:41,342 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 21 mSDsluCounter, 2375 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 3026 SdHoareTripleChecker+Invalid, 270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:41,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 3026 Invalid, 270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-02 20:42:41,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2022-11-02 20:42:41,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 558. [2022-11-02 20:42:41,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 347 states have (on average 1.239193083573487) internal successors, (430), 351 states have internal predecessors, (430), 173 states have call successors, (173), 35 states have call predecessors, (173), 36 states have return successors, (199), 172 states have call predecessors, (199), 171 states have call successors, (199) [2022-11-02 20:42:41,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 802 transitions. [2022-11-02 20:42:41,389 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 802 transitions. Word has length 294 [2022-11-02 20:42:41,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:41,389 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 802 transitions. [2022-11-02 20:42:41,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.333333333333332) internal successors, (104), 6 states have internal predecessors, (104), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-02 20:42:41,390 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 802 transitions. [2022-11-02 20:42:41,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-11-02 20:42:41,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:41,392 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:41,446 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:42:41,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:42:41,620 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:41,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:41,620 INFO L85 PathProgramCache]: Analyzing trace with hash -676327846, now seen corresponding path program 1 times [2022-11-02 20:42:41,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:41,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411225601] [2022-11-02 20:42:41,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:41,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:41,742 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:42:41,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [929079362] [2022-11-02 20:42:41,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:41,743 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:42:41,743 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:42:41,744 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:42:41,772 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-02 20:42:42,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:42,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 3585 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:42:42,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:42:42,869 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 262 proven. 0 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2022-11-02 20:42:42,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:42:42,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:42,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411225601] [2022-11-02 20:42:42,870 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:42:42,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [929079362] [2022-11-02 20:42:42,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [929079362] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:42,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:42,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:42:42,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690094287] [2022-11-02 20:42:42,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:42,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:42:42,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:42,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:42:42,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:42:42,873 INFO L87 Difference]: Start difference. First operand 558 states and 802 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-02 20:42:42,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:42,936 INFO L93 Difference]: Finished difference Result 1047 states and 1548 transitions. [2022-11-02 20:42:42,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:42:42,937 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 294 [2022-11-02 20:42:42,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:42,941 INFO L225 Difference]: With dead ends: 1047 [2022-11-02 20:42:42,942 INFO L226 Difference]: Without dead ends: 570 [2022-11-02 20:42:42,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:42:42,946 INFO L413 NwaCegarLoop]: 642 mSDtfsCounter, 3 mSDsluCounter, 1279 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 1921 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:42,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 1921 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:42:42,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2022-11-02 20:42:42,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 564. [2022-11-02 20:42:42,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 353 states have (on average 1.2351274787535411) internal successors, (436), 357 states have internal predecessors, (436), 173 states have call successors, (173), 35 states have call predecessors, (173), 36 states have return successors, (199), 172 states have call predecessors, (199), 171 states have call successors, (199) [2022-11-02 20:42:42,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 808 transitions. [2022-11-02 20:42:42,986 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 808 transitions. Word has length 294 [2022-11-02 20:42:42,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:42,986 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 808 transitions. [2022-11-02 20:42:42,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-11-02 20:42:42,987 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 808 transitions. [2022-11-02 20:42:42,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-11-02 20:42:42,989 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:42,990 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:43,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:42:43,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-02 20:42:43,204 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:43,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:43,204 INFO L85 PathProgramCache]: Analyzing trace with hash 2103075550, now seen corresponding path program 1 times [2022-11-02 20:42:43,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:43,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278104203] [2022-11-02 20:42:43,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:43,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:43,338 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:42:43,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [878862353] [2022-11-02 20:42:43,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:43,340 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:42:43,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:42:43,341 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:42:43,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-02 20:42:44,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:44,376 INFO L263 TraceCheckSpWp]: Trace formula consists of 3575 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:42:44,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:42:44,513 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2022-11-02 20:42:44,513 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:42:44,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:44,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278104203] [2022-11-02 20:42:44,513 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:42:44,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878862353] [2022-11-02 20:42:44,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878862353] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:44,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:44,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-02 20:42:44,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067452155] [2022-11-02 20:42:44,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:44,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:42:44,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:44,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:42:44,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:42:44,516 INFO L87 Difference]: Start difference. First operand 564 states and 808 transitions. Second operand has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 4 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2022-11-02 20:42:45,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:45,628 INFO L93 Difference]: Finished difference Result 1024 states and 1495 transitions. [2022-11-02 20:42:45,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:42:45,629 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 4 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) Word has length 294 [2022-11-02 20:42:45,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:45,634 INFO L225 Difference]: With dead ends: 1024 [2022-11-02 20:42:45,634 INFO L226 Difference]: Without dead ends: 601 [2022-11-02 20:42:45,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:42:45,639 INFO L413 NwaCegarLoop]: 664 mSDtfsCounter, 46 mSDsluCounter, 2579 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 3243 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:45,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 3243 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 20:42:45,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2022-11-02 20:42:45,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 572. [2022-11-02 20:42:45,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 357 states have (on average 1.2324929971988796) internal successors, (440), 361 states have internal predecessors, (440), 177 states have call successors, (177), 35 states have call predecessors, (177), 36 states have return successors, (203), 176 states have call predecessors, (203), 175 states have call successors, (203) [2022-11-02 20:42:45,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 820 transitions. [2022-11-02 20:42:45,685 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 820 transitions. Word has length 294 [2022-11-02 20:42:45,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:45,685 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 820 transitions. [2022-11-02 20:42:45,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.666666666666666) internal successors, (94), 6 states have internal predecessors, (94), 4 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (28), 4 states have call predecessors, (28), 4 states have call successors, (28) [2022-11-02 20:42:45,687 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 820 transitions. [2022-11-02 20:42:45,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-11-02 20:42:45,689 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:45,689 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:45,740 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:42:45,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:42:45,904 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:45,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:45,904 INFO L85 PathProgramCache]: Analyzing trace with hash 2026174752, now seen corresponding path program 1 times [2022-11-02 20:42:45,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:45,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382193352] [2022-11-02 20:42:45,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:45,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:46,021 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:42:46,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1797292958] [2022-11-02 20:42:46,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:46,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:42:46,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:42:46,023 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:42:46,052 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-02 20:42:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:47,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 3578 conjuncts, 49 conjunts are in the unsatisfiable core [2022-11-02 20:42:47,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:42:47,330 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 251 proven. 1 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2022-11-02 20:42:47,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:42:48,111 INFO L134 CoverageAnalysis]: Checked inductivity of 549 backedges. 51 proven. 6 refuted. 0 times theorem prover too weak. 492 trivial. 0 not checked. [2022-11-02 20:42:48,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:48,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382193352] [2022-11-02 20:42:48,112 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:42:48,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797292958] [2022-11-02 20:42:48,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797292958] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:42:48,113 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:42:48,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 16 [2022-11-02 20:42:48,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960091626] [2022-11-02 20:42:48,113 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:42:48,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-02 20:42:48,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:48,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-02 20:42:48,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:42:48,115 INFO L87 Difference]: Start difference. First operand 572 states and 820 transitions. Second operand has 16 states, 14 states have (on average 7.714285714285714) internal successors, (108), 13 states have internal predecessors, (108), 6 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (33), 6 states have call predecessors, (33), 5 states have call successors, (33) [2022-11-02 20:42:49,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:49,055 INFO L93 Difference]: Finished difference Result 1055 states and 1533 transitions. [2022-11-02 20:42:49,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:42:49,056 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 14 states have (on average 7.714285714285714) internal successors, (108), 13 states have internal predecessors, (108), 6 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (33), 6 states have call predecessors, (33), 5 states have call successors, (33) Word has length 294 [2022-11-02 20:42:49,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:49,113 INFO L225 Difference]: With dead ends: 1055 [2022-11-02 20:42:49,113 INFO L226 Difference]: Without dead ends: 578 [2022-11-02 20:42:49,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 572 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:42:49,117 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 4 mSDsluCounter, 7743 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 8354 SdHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:49,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 8354 Invalid, 799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:42:49,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2022-11-02 20:42:49,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 575. [2022-11-02 20:42:49,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 359 states have (on average 1.2311977715877438) internal successors, (442), 364 states have internal predecessors, (442), 177 states have call successors, (177), 35 states have call predecessors, (177), 37 states have return successors, (206), 176 states have call predecessors, (206), 175 states have call successors, (206) [2022-11-02 20:42:49,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 825 transitions. [2022-11-02 20:42:49,159 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 825 transitions. Word has length 294 [2022-11-02 20:42:49,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:49,161 INFO L495 AbstractCegarLoop]: Abstraction has 575 states and 825 transitions. [2022-11-02 20:42:49,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 14 states have (on average 7.714285714285714) internal successors, (108), 13 states have internal predecessors, (108), 6 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (33), 6 states have call predecessors, (33), 5 states have call successors, (33) [2022-11-02 20:42:49,162 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 825 transitions. [2022-11-02 20:42:49,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-11-02 20:42:49,164 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:49,165 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:49,212 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:42:49,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-02 20:42:49,392 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:49,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:49,392 INFO L85 PathProgramCache]: Analyzing trace with hash -2072957968, now seen corresponding path program 1 times [2022-11-02 20:42:49,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:49,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677966670] [2022-11-02 20:42:49,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:49,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:49,523 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:42:49,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [657785515] [2022-11-02 20:42:49,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:49,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:42:49,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:42:49,525 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:42:49,544 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-02 20:42:50,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:50,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 3607 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-02 20:42:50,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:42:50,796 INFO L134 CoverageAnalysis]: Checked inductivity of 593 backedges. 331 proven. 0 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2022-11-02 20:42:50,796 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:42:50,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:50,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677966670] [2022-11-02 20:42:50,797 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:42:50,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657785515] [2022-11-02 20:42:50,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657785515] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:42:50,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:42:50,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:42:50,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905566630] [2022-11-02 20:42:50,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:42:50,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:42:50,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:50,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:42:50,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:42:50,799 INFO L87 Difference]: Start difference. First operand 575 states and 825 transitions. Second operand has 5 states, 4 states have (on average 29.75) internal successors, (119), 5 states have internal predecessors, (119), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 2 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-02 20:42:51,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:51,612 INFO L93 Difference]: Finished difference Result 998 states and 1455 transitions. [2022-11-02 20:42:51,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:42:51,613 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 29.75) internal successors, (119), 5 states have internal predecessors, (119), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 2 states have call predecessors, (32), 3 states have call successors, (32) Word has length 305 [2022-11-02 20:42:51,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:51,618 INFO L225 Difference]: With dead ends: 998 [2022-11-02 20:42:51,618 INFO L226 Difference]: Without dead ends: 567 [2022-11-02 20:42:51,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:42:51,625 INFO L413 NwaCegarLoop]: 606 mSDtfsCounter, 2 mSDsluCounter, 1729 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2335 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:51,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2335 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-02 20:42:51,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2022-11-02 20:42:51,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 567. [2022-11-02 20:42:51,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 355 states have (on average 1.228169014084507) internal successors, (436), 360 states have internal predecessors, (436), 173 states have call successors, (173), 35 states have call predecessors, (173), 37 states have return successors, (202), 172 states have call predecessors, (202), 171 states have call successors, (202) [2022-11-02 20:42:51,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 811 transitions. [2022-11-02 20:42:51,666 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 811 transitions. Word has length 305 [2022-11-02 20:42:51,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:51,667 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 811 transitions. [2022-11-02 20:42:51,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 29.75) internal successors, (119), 5 states have internal predecessors, (119), 3 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (32), 2 states have call predecessors, (32), 3 states have call successors, (32) [2022-11-02 20:42:51,667 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 811 transitions. [2022-11-02 20:42:51,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-11-02 20:42:51,670 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:51,670 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:51,719 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-02 20:42:51,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-02 20:42:51,896 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:51,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:51,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1226691340, now seen corresponding path program 1 times [2022-11-02 20:42:51,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:51,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645159816] [2022-11-02 20:42:51,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:51,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:52,021 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:42:52,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [677610042] [2022-11-02 20:42:52,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:52,021 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:42:52,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:42:52,023 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:42:52,040 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-02 20:42:53,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:42:53,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 3613 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-02 20:42:53,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:42:53,432 INFO L134 CoverageAnalysis]: Checked inductivity of 593 backedges. 280 proven. 3 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2022-11-02 20:42:53,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:42:53,817 INFO L134 CoverageAnalysis]: Checked inductivity of 593 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-11-02 20:42:53,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:42:53,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645159816] [2022-11-02 20:42:53,818 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:42:53,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677610042] [2022-11-02 20:42:53,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677610042] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:42:53,821 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:42:53,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2022-11-02 20:42:53,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422986660] [2022-11-02 20:42:53,822 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:42:53,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:42:53,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:42:53,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:42:53,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:42:53,823 INFO L87 Difference]: Start difference. First operand 567 states and 811 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 7 states have internal predecessors, (101), 4 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (36), 5 states have call predecessors, (36), 4 states have call successors, (36) [2022-11-02 20:42:58,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:42:58,259 INFO L93 Difference]: Finished difference Result 1010 states and 1473 transitions. [2022-11-02 20:42:58,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:42:58,260 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 7 states have internal predecessors, (101), 4 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (36), 5 states have call predecessors, (36), 4 states have call successors, (36) Word has length 305 [2022-11-02 20:42:58,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:42:58,266 INFO L225 Difference]: With dead ends: 1010 [2022-11-02 20:42:58,266 INFO L226 Difference]: Without dead ends: 567 [2022-11-02 20:42:58,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 602 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:42:58,271 INFO L413 NwaCegarLoop]: 644 mSDtfsCounter, 10 mSDsluCounter, 3842 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 4486 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:42:58,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 4486 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-02 20:42:58,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2022-11-02 20:42:58,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 567. [2022-11-02 20:42:58,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 355 states have (on average 1.228169014084507) internal successors, (436), 360 states have internal predecessors, (436), 173 states have call successors, (173), 35 states have call predecessors, (173), 37 states have return successors, (201), 172 states have call predecessors, (201), 171 states have call successors, (201) [2022-11-02 20:42:58,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 810 transitions. [2022-11-02 20:42:58,329 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 810 transitions. Word has length 305 [2022-11-02 20:42:58,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:42:58,330 INFO L495 AbstractCegarLoop]: Abstraction has 567 states and 810 transitions. [2022-11-02 20:42:58,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 7 states have internal predecessors, (101), 4 states have call successors, (38), 2 states have call predecessors, (38), 3 states have return successors, (36), 5 states have call predecessors, (36), 4 states have call successors, (36) [2022-11-02 20:42:58,330 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 810 transitions. [2022-11-02 20:42:58,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-02 20:42:58,334 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:42:58,335 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:42:58,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-02 20:42:58,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-02 20:42:58,548 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:42:58,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:42:58,549 INFO L85 PathProgramCache]: Analyzing trace with hash 631348788, now seen corresponding path program 1 times [2022-11-02 20:42:58,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:42:58,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857738982] [2022-11-02 20:42:58,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:58,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:42:58,700 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:42:58,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1041690821] [2022-11-02 20:42:58,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:42:58,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:42:58,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:42:58,702 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:42:58,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-02 20:43:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:00,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 3648 conjuncts, 67 conjunts are in the unsatisfiable core [2022-11-02 20:43:00,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:43:01,591 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 17 [2022-11-02 20:43:01,595 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2022-11-02 20:43:01,638 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 382 proven. 0 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2022-11-02 20:43:01,638 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:43:01,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:01,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857738982] [2022-11-02 20:43:01,639 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:43:01,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041690821] [2022-11-02 20:43:01,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041690821] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:01,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:01,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-02 20:43:01,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477477115] [2022-11-02 20:43:01,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:01,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-02 20:43:01,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:01,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-02 20:43:01,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2022-11-02 20:43:01,642 INFO L87 Difference]: Start difference. First operand 567 states and 810 transitions. Second operand has 18 states, 18 states have (on average 6.833333333333333) internal successors, (123), 16 states have internal predecessors, (123), 7 states have call successors, (34), 3 states have call predecessors, (34), 6 states have return successors, (33), 9 states have call predecessors, (33), 7 states have call successors, (33) [2022-11-02 20:43:03,410 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:43:07,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:43:09,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:09,483 INFO L93 Difference]: Finished difference Result 1094 states and 1622 transitions. [2022-11-02 20:43:09,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-02 20:43:09,484 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 6.833333333333333) internal successors, (123), 16 states have internal predecessors, (123), 7 states have call successors, (34), 3 states have call predecessors, (34), 6 states have return successors, (33), 9 states have call predecessors, (33), 7 states have call successors, (33) Word has length 316 [2022-11-02 20:43:09,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:09,491 INFO L225 Difference]: With dead ends: 1094 [2022-11-02 20:43:09,492 INFO L226 Difference]: Without dead ends: 658 [2022-11-02 20:43:09,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 295 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=100, Invalid=550, Unknown=0, NotChecked=0, Total=650 [2022-11-02 20:43:09,496 INFO L413 NwaCegarLoop]: 617 mSDtfsCounter, 120 mSDsluCounter, 5137 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 5754 SdHoareTripleChecker+Invalid, 1079 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 194 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:09,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 5754 Invalid, 1079 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 865 Invalid, 0 Unknown, 194 Unchecked, 7.4s Time] [2022-11-02 20:43:09,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2022-11-02 20:43:09,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 606. [2022-11-02 20:43:09,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 383 states have (on average 1.2193211488250653) internal successors, (467), 388 states have internal predecessors, (467), 179 states have call successors, (179), 39 states have call predecessors, (179), 42 states have return successors, (208), 179 states have call predecessors, (208), 177 states have call successors, (208) [2022-11-02 20:43:09,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 854 transitions. [2022-11-02 20:43:09,541 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 854 transitions. Word has length 316 [2022-11-02 20:43:09,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:09,542 INFO L495 AbstractCegarLoop]: Abstraction has 606 states and 854 transitions. [2022-11-02 20:43:09,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 6.833333333333333) internal successors, (123), 16 states have internal predecessors, (123), 7 states have call successors, (34), 3 states have call predecessors, (34), 6 states have return successors, (33), 9 states have call predecessors, (33), 7 states have call successors, (33) [2022-11-02 20:43:09,542 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 854 transitions. [2022-11-02 20:43:09,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2022-11-02 20:43:09,545 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:09,545 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:09,596 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-02 20:43:09,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:43:09,768 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:43:09,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:09,768 INFO L85 PathProgramCache]: Analyzing trace with hash 2061121970, now seen corresponding path program 1 times [2022-11-02 20:43:09,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:09,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241580259] [2022-11-02 20:43:09,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:09,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:09,869 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:43:09,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1291354] [2022-11-02 20:43:09,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:09,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:43:09,870 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:43:09,871 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:43:09,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-02 20:43:10,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:10,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 3651 conjuncts, 22 conjunts are in the unsatisfiable core [2022-11-02 20:43:10,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:43:11,002 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 288 proven. 0 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2022-11-02 20:43:11,002 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:43:11,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:11,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241580259] [2022-11-02 20:43:11,003 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:43:11,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291354] [2022-11-02 20:43:11,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1291354] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:11,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:11,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:43:11,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209365080] [2022-11-02 20:43:11,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:11,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:43:11,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:11,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:43:11,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:43:11,006 INFO L87 Difference]: Start difference. First operand 606 states and 854 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-02 20:43:11,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:11,092 INFO L93 Difference]: Finished difference Result 1113 states and 1643 transitions. [2022-11-02 20:43:11,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:43:11,092 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 316 [2022-11-02 20:43:11,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:11,097 INFO L225 Difference]: With dead ends: 1113 [2022-11-02 20:43:11,098 INFO L226 Difference]: Without dead ends: 640 [2022-11-02 20:43:11,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:43:11,102 INFO L413 NwaCegarLoop]: 667 mSDtfsCounter, 8 mSDsluCounter, 1975 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 2642 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:11,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 2642 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:43:11,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2022-11-02 20:43:11,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 622. [2022-11-02 20:43:11,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 399 states have (on average 1.218045112781955) internal successors, (486), 404 states have internal predecessors, (486), 179 states have call successors, (179), 39 states have call predecessors, (179), 42 states have return successors, (208), 179 states have call predecessors, (208), 177 states have call successors, (208) [2022-11-02 20:43:11,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 873 transitions. [2022-11-02 20:43:11,148 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 873 transitions. Word has length 316 [2022-11-02 20:43:11,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:11,148 INFO L495 AbstractCegarLoop]: Abstraction has 622 states and 873 transitions. [2022-11-02 20:43:11,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-02 20:43:11,149 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 873 transitions. [2022-11-02 20:43:11,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2022-11-02 20:43:11,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:11,152 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:11,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-02 20:43:11,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-02 20:43:11,368 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:43:11,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:11,369 INFO L85 PathProgramCache]: Analyzing trace with hash 116040248, now seen corresponding path program 1 times [2022-11-02 20:43:11,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:11,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359599417] [2022-11-02 20:43:11,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:11,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:11,476 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:43:11,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1797021168] [2022-11-02 20:43:11,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:11,477 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:43:11,477 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:43:11,478 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:43:11,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-02 20:43:12,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:12,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 3654 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-02 20:43:12,697 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:43:13,644 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-02 20:43:13,648 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-02 20:43:13,680 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 385 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2022-11-02 20:43:13,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:43:13,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:13,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359599417] [2022-11-02 20:43:13,680 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:43:13,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797021168] [2022-11-02 20:43:13,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797021168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:13,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:13,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-02 20:43:13,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731019482] [2022-11-02 20:43:13,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:13,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-02 20:43:13,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:13,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-02 20:43:13,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:43:13,683 INFO L87 Difference]: Start difference. First operand 622 states and 873 transitions. Second operand has 13 states, 13 states have (on average 9.76923076923077) internal successors, (127), 13 states have internal predecessors, (127), 8 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (33), 8 states have call predecessors, (33), 8 states have call successors, (33) [2022-11-02 20:43:20,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:20,020 INFO L93 Difference]: Finished difference Result 1269 states and 1828 transitions. [2022-11-02 20:43:20,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:43:20,022 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.76923076923077) internal successors, (127), 13 states have internal predecessors, (127), 8 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (33), 8 states have call predecessors, (33), 8 states have call successors, (33) Word has length 317 [2022-11-02 20:43:20,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:20,028 INFO L225 Difference]: With dead ends: 1269 [2022-11-02 20:43:20,028 INFO L226 Difference]: Without dead ends: 757 [2022-11-02 20:43:20,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 325 GetRequests, 302 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:43:20,032 INFO L413 NwaCegarLoop]: 593 mSDtfsCounter, 162 mSDsluCounter, 5466 mSDsCounter, 0 mSdLazyCounter, 1240 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 6059 SdHoareTripleChecker+Invalid, 1424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 173 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:20,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 6059 Invalid, 1424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1240 Invalid, 0 Unknown, 173 Unchecked, 6.0s Time] [2022-11-02 20:43:20,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2022-11-02 20:43:20,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 676. [2022-11-02 20:43:20,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 440 states have (on average 1.2113636363636364) internal successors, (533), 445 states have internal predecessors, (533), 186 states have call successors, (186), 43 states have call predecessors, (186), 48 states have return successors, (218), 188 states have call predecessors, (218), 184 states have call successors, (218) [2022-11-02 20:43:20,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 937 transitions. [2022-11-02 20:43:20,096 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 937 transitions. Word has length 317 [2022-11-02 20:43:20,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:20,096 INFO L495 AbstractCegarLoop]: Abstraction has 676 states and 937 transitions. [2022-11-02 20:43:20,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.76923076923077) internal successors, (127), 13 states have internal predecessors, (127), 8 states have call successors, (35), 3 states have call predecessors, (35), 5 states have return successors, (33), 8 states have call predecessors, (33), 8 states have call successors, (33) [2022-11-02 20:43:20,097 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 937 transitions. [2022-11-02 20:43:20,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2022-11-02 20:43:20,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:20,100 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:20,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-02 20:43:20,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:43:20,324 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:43:20,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:20,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1234369862, now seen corresponding path program 1 times [2022-11-02 20:43:20,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:20,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617915051] [2022-11-02 20:43:20,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:20,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:20,468 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:43:20,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1979594681] [2022-11-02 20:43:20,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:20,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:43:20,469 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:43:20,470 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:43:20,476 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-02 20:43:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:21,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 3649 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 20:43:21,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:43:21,648 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2022-11-02 20:43:21,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:43:21,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:21,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617915051] [2022-11-02 20:43:21,649 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:43:21,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979594681] [2022-11-02 20:43:21,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979594681] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:21,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:21,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:43:21,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753066757] [2022-11-02 20:43:21,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:21,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:43:21,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:21,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:43:21,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:43:21,652 INFO L87 Difference]: Start difference. First operand 676 states and 937 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-02 20:43:21,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:21,727 INFO L93 Difference]: Finished difference Result 1321 states and 1903 transitions. [2022-11-02 20:43:21,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:43:21,728 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 317 [2022-11-02 20:43:21,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:21,733 INFO L225 Difference]: With dead ends: 1321 [2022-11-02 20:43:21,733 INFO L226 Difference]: Without dead ends: 684 [2022-11-02 20:43:21,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:43:21,739 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 7 mSDsluCounter, 1274 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1921 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:21,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 1921 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:43:21,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2022-11-02 20:43:21,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 678. [2022-11-02 20:43:21,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 442 states have (on average 1.2081447963800904) internal successors, (534), 447 states have internal predecessors, (534), 186 states have call successors, (186), 43 states have call predecessors, (186), 48 states have return successors, (218), 188 states have call predecessors, (218), 184 states have call successors, (218) [2022-11-02 20:43:21,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 938 transitions. [2022-11-02 20:43:21,790 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 938 transitions. Word has length 317 [2022-11-02 20:43:21,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:21,790 INFO L495 AbstractCegarLoop]: Abstraction has 678 states and 938 transitions. [2022-11-02 20:43:21,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-02 20:43:21,791 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 938 transitions. [2022-11-02 20:43:21,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2022-11-02 20:43:21,794 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:21,794 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:21,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-02 20:43:22,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:43:22,004 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:43:22,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:22,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1045479588, now seen corresponding path program 1 times [2022-11-02 20:43:22,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:22,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566551041] [2022-11-02 20:43:22,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:22,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:22,130 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:43:22,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [810583656] [2022-11-02 20:43:22,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:22,131 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:43:22,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:43:22,132 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:43:22,159 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-02 20:43:23,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:23,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 3664 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:43:23,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:43:23,367 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 272 proven. 0 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2022-11-02 20:43:23,367 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:43:23,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:23,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566551041] [2022-11-02 20:43:23,368 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:43:23,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [810583656] [2022-11-02 20:43:23,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [810583656] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:23,368 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:23,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:43:23,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658222018] [2022-11-02 20:43:23,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:23,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:43:23,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:23,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:43:23,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:43:23,371 INFO L87 Difference]: Start difference. First operand 678 states and 938 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-02 20:43:25,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:25,005 INFO L93 Difference]: Finished difference Result 1332 states and 1930 transitions. [2022-11-02 20:43:25,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:43:25,006 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 319 [2022-11-02 20:43:25,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:25,010 INFO L225 Difference]: With dead ends: 1332 [2022-11-02 20:43:25,010 INFO L226 Difference]: Without dead ends: 693 [2022-11-02 20:43:25,015 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 315 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:43:25,015 INFO L413 NwaCegarLoop]: 650 mSDtfsCounter, 15 mSDsluCounter, 1799 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2449 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:25,016 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2449 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-02 20:43:25,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2022-11-02 20:43:25,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 680. [2022-11-02 20:43:25,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 444 states have (on average 1.2072072072072073) internal successors, (536), 449 states have internal predecessors, (536), 186 states have call successors, (186), 43 states have call predecessors, (186), 48 states have return successors, (218), 188 states have call predecessors, (218), 184 states have call successors, (218) [2022-11-02 20:43:25,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 940 transitions. [2022-11-02 20:43:25,069 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 940 transitions. Word has length 319 [2022-11-02 20:43:25,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:25,070 INFO L495 AbstractCegarLoop]: Abstraction has 680 states and 940 transitions. [2022-11-02 20:43:25,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (34), 2 states have call predecessors, (34), 2 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-11-02 20:43:25,070 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 940 transitions. [2022-11-02 20:43:25,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2022-11-02 20:43:25,073 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:25,073 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:25,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-02 20:43:25,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-02 20:43:25,300 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:43:25,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:25,301 INFO L85 PathProgramCache]: Analyzing trace with hash 660650014, now seen corresponding path program 1 times [2022-11-02 20:43:25,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:25,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605538563] [2022-11-02 20:43:25,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:25,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:25,403 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:43:25,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [630757271] [2022-11-02 20:43:25,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:25,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:43:25,404 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:43:25,405 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:43:25,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-02 20:43:26,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:26,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 3659 conjuncts, 39 conjunts are in the unsatisfiable core [2022-11-02 20:43:26,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:43:26,959 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 5 [2022-11-02 20:43:27,000 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 291 proven. 0 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2022-11-02 20:43:27,000 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:43:27,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:27,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605538563] [2022-11-02 20:43:27,000 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:43:27,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630757271] [2022-11-02 20:43:27,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630757271] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:43:27,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:43:27,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-02 20:43:27,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890585683] [2022-11-02 20:43:27,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:43:27,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:43:27,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:27,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:43:27,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:43:27,003 INFO L87 Difference]: Start difference. First operand 680 states and 940 transitions. Second operand has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 6 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 6 states have call predecessors, (33), 6 states have call successors, (33) [2022-11-02 20:43:32,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:32,016 INFO L93 Difference]: Finished difference Result 1324 states and 1914 transitions. [2022-11-02 20:43:32,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 20:43:32,020 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 6 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 6 states have call predecessors, (33), 6 states have call successors, (33) Word has length 319 [2022-11-02 20:43:32,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:32,025 INFO L225 Difference]: With dead ends: 1324 [2022-11-02 20:43:32,025 INFO L226 Difference]: Without dead ends: 739 [2022-11-02 20:43:32,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=299, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:43:32,030 INFO L413 NwaCegarLoop]: 583 mSDtfsCounter, 142 mSDsluCounter, 4884 mSDsCounter, 0 mSdLazyCounter, 1233 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 5467 SdHoareTripleChecker+Invalid, 1248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 1233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:32,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 5467 Invalid, 1248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 1233 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-02 20:43:32,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2022-11-02 20:43:32,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 678. [2022-11-02 20:43:32,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 440 states have (on average 1.190909090909091) internal successors, (524), 444 states have internal predecessors, (524), 186 states have call successors, (186), 43 states have call predecessors, (186), 50 states have return successors, (239), 191 states have call predecessors, (239), 184 states have call successors, (239) [2022-11-02 20:43:32,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 949 transitions. [2022-11-02 20:43:32,084 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 949 transitions. Word has length 319 [2022-11-02 20:43:32,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:32,084 INFO L495 AbstractCegarLoop]: Abstraction has 678 states and 949 transitions. [2022-11-02 20:43:32,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.636363636363637) internal successors, (117), 11 states have internal predecessors, (117), 6 states have call successors, (35), 2 states have call predecessors, (35), 3 states have return successors, (33), 6 states have call predecessors, (33), 6 states have call successors, (33) [2022-11-02 20:43:32,085 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 949 transitions. [2022-11-02 20:43:32,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2022-11-02 20:43:32,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:32,088 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:32,129 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-02 20:43:32,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-11-02 20:43:32,312 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:43:32,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:32,312 INFO L85 PathProgramCache]: Analyzing trace with hash 74626680, now seen corresponding path program 1 times [2022-11-02 20:43:32,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:32,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384957297] [2022-11-02 20:43:32,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:32,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:32,434 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:43:32,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1012089694] [2022-11-02 20:43:32,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:32,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:43:32,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:43:32,435 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:43:32,467 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-02 20:43:33,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:33,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 3664 conjuncts, 164 conjunts are in the unsatisfiable core [2022-11-02 20:43:33,915 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:43:33,924 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:43:34,758 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 20:43:34,768 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 20:43:34,778 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-02 20:43:38,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:43:38,959 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 20:43:38,971 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:43:38,972 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-02 20:43:38,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:43:38,982 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-11-02 20:43:43,331 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_7881 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_7881) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_7882 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_7882) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_7880 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_7880) |c_#memory_int|))) is different from true [2022-11-02 20:43:43,817 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7883 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7886 (Array Int Int)) (v_ArrVal_7885 Int)) (and (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7885)) |c_#memory_int|) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_7883) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_7886) |c_#memory_$Pointer$.base|))) is different from true [2022-11-02 20:43:43,853 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7883 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7886 (Array Int Int)) (v_ArrVal_7885 Int)) (and (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_7885)) |c_#memory_int|) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_7883) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_7886) |c_#memory_$Pointer$.base|))) is different from true [2022-11-02 20:43:45,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:43:45,198 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-02 20:43:45,199 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 1 [2022-11-02 20:43:45,207 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 309 proven. 13 refuted. 0 times theorem prover too weak. 318 trivial. 10 not checked. [2022-11-02 20:43:45,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:43:47,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:43:47,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384957297] [2022-11-02 20:43:47,228 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:43:47,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012089694] [2022-11-02 20:43:47,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1012089694] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:43:47,229 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:43:47,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2022-11-02 20:43:47,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379546147] [2022-11-02 20:43:47,229 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-02 20:43:47,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-02 20:43:47,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:43:47,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-02 20:43:47,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=1488, Unknown=33, NotChecked=240, Total=1892 [2022-11-02 20:43:47,231 INFO L87 Difference]: Start difference. First operand 678 states and 949 transitions. Second operand has 35 states, 31 states have (on average 4.774193548387097) internal successors, (148), 32 states have internal predecessors, (148), 13 states have call successors, (38), 8 states have call predecessors, (38), 12 states have return successors, (36), 12 states have call predecessors, (36), 13 states have call successors, (36) [2022-11-02 20:43:48,389 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_7883 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7886 (Array Int Int)) (v_ArrVal_7885 Int)) (and (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_7885)) |c_#memory_int|) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_7883) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_7886) |c_#memory_$Pointer$.base|))) (exists ((v_ArrVal_7881 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_7881) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_7882 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_7882) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_7880 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_7880) |c_#memory_int|))) is different from true [2022-11-02 20:43:48,418 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_7883 (Array Int Int)) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (v_ArrVal_7886 (Array Int Int)) (v_ArrVal_7885 Int)) (and (= (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 v_ArrVal_7885)) |c_#memory_int|) (= (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_7883) |c_#memory_$Pointer$.offset|) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| v_ArrVal_7886) |c_#memory_$Pointer$.base|))) (exists ((|aws_array_list_is_valid_~#required_size~0.base| Int)) (and (exists ((v_ArrVal_7880 (Array Int Int))) (= (store |c_old(#memory_int)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_7880) |c_#memory_int|)) (exists ((v_ArrVal_7881 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_7881))) (= (select |c_old(#valid)| |aws_array_list_is_valid_~#required_size~0.base|) 0) (exists ((v_ArrVal_7882 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |aws_array_list_is_valid_~#required_size~0.base| v_ArrVal_7882)))))) is different from true [2022-11-02 20:43:50,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:43:55,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:43:55,460 INFO L93 Difference]: Finished difference Result 1412 states and 2083 transitions. [2022-11-02 20:43:55,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-02 20:43:55,460 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 31 states have (on average 4.774193548387097) internal successors, (148), 32 states have internal predecessors, (148), 13 states have call successors, (38), 8 states have call predecessors, (38), 12 states have return successors, (36), 12 states have call predecessors, (36), 13 states have call successors, (36) Word has length 321 [2022-11-02 20:43:55,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:43:55,467 INFO L225 Difference]: With dead ends: 1412 [2022-11-02 20:43:55,467 INFO L226 Difference]: Without dead ends: 904 [2022-11-02 20:43:55,470 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 480 SyntacticMatches, 7 SemanticMatches, 54 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 753 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=204, Invalid=2326, Unknown=40, NotChecked=510, Total=3080 [2022-11-02 20:43:55,471 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 297 mSDsluCounter, 5100 mSDsCounter, 0 mSdLazyCounter, 3241 mSolverCounterSat, 468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 5747 SdHoareTripleChecker+Invalid, 12372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 3241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8663 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:43:55,471 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 5747 Invalid, 12372 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [468 Valid, 3241 Invalid, 0 Unknown, 8663 Unchecked, 7.2s Time] [2022-11-02 20:43:55,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2022-11-02 20:43:55,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 749. [2022-11-02 20:43:55,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 495 states have (on average 1.1898989898989898) internal successors, (589), 503 states have internal predecessors, (589), 191 states have call successors, (191), 48 states have call predecessors, (191), 61 states have return successors, (277), 198 states have call predecessors, (277), 189 states have call successors, (277) [2022-11-02 20:43:55,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1057 transitions. [2022-11-02 20:43:55,573 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1057 transitions. Word has length 321 [2022-11-02 20:43:55,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:43:55,574 INFO L495 AbstractCegarLoop]: Abstraction has 749 states and 1057 transitions. [2022-11-02 20:43:55,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 31 states have (on average 4.774193548387097) internal successors, (148), 32 states have internal predecessors, (148), 13 states have call successors, (38), 8 states have call predecessors, (38), 12 states have return successors, (36), 12 states have call predecessors, (36), 13 states have call successors, (36) [2022-11-02 20:43:55,574 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1057 transitions. [2022-11-02 20:43:55,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-11-02 20:43:55,578 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:43:55,578 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:43:55,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-11-02 20:43:55,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-02 20:43:55,804 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:43:55,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:43:55,805 INFO L85 PathProgramCache]: Analyzing trace with hash 2041529105, now seen corresponding path program 1 times [2022-11-02 20:43:55,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:43:55,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545442794] [2022-11-02 20:43:55,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:55,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:43:55,903 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:43:55,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1066661349] [2022-11-02 20:43:55,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:43:55,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:43:55,904 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:43:55,905 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:43:55,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-02 20:43:57,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:43:57,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 3703 conjuncts, 167 conjunts are in the unsatisfiable core [2022-11-02 20:43:57,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:43:57,311 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:43:57,800 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2022-11-02 20:44:11,953 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:44:11,953 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2022-11-02 20:44:11,967 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:44:23,493 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-02 20:44:23,493 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-11-02 20:44:23,503 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 62 [2022-11-02 20:44:23,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:44:23,922 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:44:23,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:44:23,924 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 51 [2022-11-02 20:44:28,299 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_8372 (Array Int Int))) (= (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_8372) |c_#memory_int|)) is different from true [2022-11-02 20:44:30,800 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_8374 Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| v_ArrVal_8374)))) is different from true [2022-11-02 20:44:41,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:44:41,461 INFO L356 Elim1Store]: treesize reduction 96, result has 1.0 percent of original size [2022-11-02 20:44:41,461 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 5 case distinctions, treesize of input 71 treesize of output 1 [2022-11-02 20:44:41,471 INFO L134 CoverageAnalysis]: Checked inductivity of 659 backedges. 313 proven. 22 refuted. 4 times theorem prover too weak. 317 trivial. 3 not checked. [2022-11-02 20:44:41,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:44:43,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:44:43,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545442794] [2022-11-02 20:44:43,857 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:44:43,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1066661349] [2022-11-02 20:44:43,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1066661349] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:44:43,858 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:44:43,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2022-11-02 20:44:43,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492175474] [2022-11-02 20:44:43,858 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-02 20:44:43,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-11-02 20:44:43,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:44:43,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-11-02 20:44:43,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=2246, Unknown=31, NotChecked=194, Total=2652 [2022-11-02 20:44:43,862 INFO L87 Difference]: Start difference. First operand 749 states and 1057 transitions. Second operand has 45 states, 40 states have (on average 3.8) internal successors, (152), 38 states have internal predecessors, (152), 15 states have call successors, (39), 10 states have call predecessors, (39), 14 states have return successors, (37), 14 states have call predecessors, (37), 15 states have call successors, (37) [2022-11-02 20:45:03,298 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.26s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Real, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 20:45:08,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:08,594 INFO L93 Difference]: Finished difference Result 1720 states and 2685 transitions. [2022-11-02 20:45:08,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-02 20:45:08,595 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 40 states have (on average 3.8) internal successors, (152), 38 states have internal predecessors, (152), 15 states have call successors, (39), 10 states have call predecessors, (39), 14 states have return successors, (37), 14 states have call predecessors, (37), 15 states have call successors, (37) Word has length 327 [2022-11-02 20:45:08,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:08,603 INFO L225 Difference]: With dead ends: 1720 [2022-11-02 20:45:08,603 INFO L226 Difference]: Without dead ends: 1197 [2022-11-02 20:45:08,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 548 GetRequests, 476 SyntacticMatches, 11 SemanticMatches, 61 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1321 ImplicationChecksByTransitivity, 59.1s TimeCoverageRelationStatistics Valid=251, Invalid=3359, Unknown=58, NotChecked=238, Total=3906 [2022-11-02 20:45:08,608 INFO L413 NwaCegarLoop]: 810 mSDtfsCounter, 623 mSDsluCounter, 8282 mSDsCounter, 0 mSdLazyCounter, 5057 mSolverCounterSat, 884 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 709 SdHoareTripleChecker+Valid, 9092 SdHoareTripleChecker+Invalid, 19919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 884 IncrementalHoareTripleChecker+Valid, 5057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13978 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:08,608 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [709 Valid, 9092 Invalid, 19919 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [884 Valid, 5057 Invalid, 0 Unknown, 13978 Unchecked, 8.8s Time] [2022-11-02 20:45:08,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2022-11-02 20:45:08,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 829. [2022-11-02 20:45:08,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 829 states, 553 states have (on average 1.1898734177215189) internal successors, (658), 565 states have internal predecessors, (658), 201 states have call successors, (201), 55 states have call predecessors, (201), 73 states have return successors, (310), 209 states have call predecessors, (310), 199 states have call successors, (310) [2022-11-02 20:45:08,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 829 states to 829 states and 1169 transitions. [2022-11-02 20:45:08,718 INFO L78 Accepts]: Start accepts. Automaton has 829 states and 1169 transitions. Word has length 327 [2022-11-02 20:45:08,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:08,719 INFO L495 AbstractCegarLoop]: Abstraction has 829 states and 1169 transitions. [2022-11-02 20:45:08,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 40 states have (on average 3.8) internal successors, (152), 38 states have internal predecessors, (152), 15 states have call successors, (39), 10 states have call predecessors, (39), 14 states have return successors, (37), 14 states have call predecessors, (37), 15 states have call successors, (37) [2022-11-02 20:45:08,719 INFO L276 IsEmpty]: Start isEmpty. Operand 829 states and 1169 transitions. [2022-11-02 20:45:08,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2022-11-02 20:45:08,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:08,723 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:45:08,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:08,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-02 20:45:08,952 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:08,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:08,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1064737506, now seen corresponding path program 1 times [2022-11-02 20:45:08,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:08,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893887342] [2022-11-02 20:45:08,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:08,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:09,070 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:45:09,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [84931296] [2022-11-02 20:45:09,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:09,071 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:09,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:45:09,072 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:45:09,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-02 20:45:10,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:10,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 3717 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-02 20:45:10,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:45:10,500 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 216 proven. 1 refuted. 0 times theorem prover too weak. 464 trivial. 0 not checked. [2022-11-02 20:45:10,501 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:45:11,431 INFO L134 CoverageAnalysis]: Checked inductivity of 681 backedges. 79 proven. 13 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2022-11-02 20:45:11,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:45:11,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893887342] [2022-11-02 20:45:11,432 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-02 20:45:11,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84931296] [2022-11-02 20:45:11,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84931296] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:45:11,432 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:45:11,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 22 [2022-11-02 20:45:11,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287703654] [2022-11-02 20:45:11,433 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-02 20:45:11,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-02 20:45:11,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:45:11,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-02 20:45:11,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2022-11-02 20:45:11,435 INFO L87 Difference]: Start difference. First operand 829 states and 1169 transitions. Second operand has 22 states, 18 states have (on average 7.888888888888889) internal successors, (142), 15 states have internal predecessors, (142), 6 states have call successors, (40), 3 states have call predecessors, (40), 7 states have return successors, (41), 8 states have call predecessors, (41), 5 states have call successors, (41) [2022-11-02 20:45:12,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:45:12,506 INFO L93 Difference]: Finished difference Result 1326 states and 1982 transitions. [2022-11-02 20:45:12,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:45:12,506 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 18 states have (on average 7.888888888888889) internal successors, (142), 15 states have internal predecessors, (142), 6 states have call successors, (40), 3 states have call predecessors, (40), 7 states have return successors, (41), 8 states have call predecessors, (41), 5 states have call successors, (41) Word has length 347 [2022-11-02 20:45:12,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:45:12,513 INFO L225 Difference]: With dead ends: 1326 [2022-11-02 20:45:12,513 INFO L226 Difference]: Without dead ends: 863 [2022-11-02 20:45:12,517 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 695 GetRequests, 668 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=538, Unknown=0, NotChecked=0, Total=600 [2022-11-02 20:45:12,517 INFO L413 NwaCegarLoop]: 628 mSDtfsCounter, 22 mSDsluCounter, 9836 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 10464 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-02 20:45:12,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 10464 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-02 20:45:12,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2022-11-02 20:45:12,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 850. [2022-11-02 20:45:12,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 571 states have (on average 1.1908931698774081) internal successors, (680), 585 states have internal predecessors, (680), 201 states have call successors, (201), 55 states have call predecessors, (201), 76 states have return successors, (346), 210 states have call predecessors, (346), 199 states have call successors, (346) [2022-11-02 20:45:12,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 1227 transitions. [2022-11-02 20:45:12,599 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 1227 transitions. Word has length 347 [2022-11-02 20:45:12,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:45:12,600 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 1227 transitions. [2022-11-02 20:45:12,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 18 states have (on average 7.888888888888889) internal successors, (142), 15 states have internal predecessors, (142), 6 states have call successors, (40), 3 states have call predecessors, (40), 7 states have return successors, (41), 8 states have call predecessors, (41), 5 states have call successors, (41) [2022-11-02 20:45:12,600 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 1227 transitions. [2022-11-02 20:45:12,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2022-11-02 20:45:12,604 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:45:12,604 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:45:12,653 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-02 20:45:12,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:12,830 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 20:45:12,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:45:12,831 INFO L85 PathProgramCache]: Analyzing trace with hash -577903379, now seen corresponding path program 1 times [2022-11-02 20:45:12,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:45:12,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016408041] [2022-11-02 20:45:12,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:12,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:45:12,928 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-02 20:45:12,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1054815364] [2022-11-02 20:45:12,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:45:12,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:45:12,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:45:12,930 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:45:12,951 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb30d981-79ce-48b7-83fb-c3ef5f168a28/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-02 20:45:14,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:45:14,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 3705 conjuncts, 165 conjunts are in the unsatisfiable core [2022-11-02 20:45:14,406 INFO L286 TraceCheckSpWp]: Computing forward predicates...