./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN --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 44162e1142387f3513ac3cf9af71d3c7aa6399e99cd364d08a07ceb8efc80a41 --- 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-6b4ec56 [2022-11-20 12:47:07,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 12:47:07,641 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 12:47:07,685 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 12:47:07,686 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 12:47:07,689 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 12:47:07,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 12:47:07,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 12:47:07,701 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 12:47:07,708 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 12:47:07,710 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 12:47:07,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 12:47:07,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 12:47:07,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 12:47:07,722 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 12:47:07,723 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 12:47:07,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 12:47:07,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 12:47:07,726 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 12:47:07,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 12:47:07,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 12:47:07,737 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 12:47:07,739 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 12:47:07,740 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 12:47:07,754 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 12:47:07,755 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 12:47:07,755 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 12:47:07,759 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 12:47:07,760 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 12:47:07,762 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 12:47:07,763 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 12:47:07,764 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 12:47:07,766 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 12:47:07,767 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 12:47:07,768 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 12:47:07,768 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 12:47:07,769 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 12:47:07,769 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 12:47:07,769 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 12:47:07,770 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 12:47:07,771 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 12:47:07,772 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-20 12:47:07,821 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 12:47:07,822 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 12:47:07,822 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 12:47:07,823 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 12:47:07,824 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 12:47:07,824 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 12:47:07,825 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 12:47:07,825 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 12:47:07,825 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 12:47:07,825 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 12:47:07,827 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 12:47:07,827 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 12:47:07,827 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 12:47:07,827 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 12:47:07,827 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 12:47:07,828 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 12:47:07,828 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 12:47:07,828 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 12:47:07,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 12:47:07,829 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 12:47:07,829 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 12:47:07,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:47:07,829 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 12:47:07,830 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 12:47:07,830 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 12:47:07,830 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 12:47:07,830 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 12:47:07,830 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 12:47:07,831 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 12:47:07,831 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 12:47:07,832 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_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44162e1142387f3513ac3cf9af71d3c7aa6399e99cd364d08a07ceb8efc80a41 [2022-11-20 12:47:08,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 12:47:08,183 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 12:47:08,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 12:47:08,188 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 12:47:08,188 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 12:47:08,190 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i [2022-11-20 12:47:11,816 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 12:47:12,553 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 12:47:12,553 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i [2022-11-20 12:47:12,595 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/data/b128bf3a3/0e0a739a52964109a8f1cea5cb7be6aa/FLAGfc21d6ac9 [2022-11-20 12:47:12,613 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/data/b128bf3a3/0e0a739a52964109a8f1cea5cb7be6aa [2022-11-20 12:47:12,616 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 12:47:12,617 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 12:47:12,619 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 12:47:12,619 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 12:47:12,624 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 12:47:12,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:47:12" (1/1) ... [2022-11-20 12:47:12,626 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3791550f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:12, skipping insertion in model container [2022-11-20 12:47:12,626 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 12:47:12" (1/1) ... [2022-11-20 12:47:12,635 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 12:47:12,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 12:47:13,185 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i[4496,4509] [2022-11-20 12:47:13,196 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i[4556,4569] [2022-11-20 12:47:14,527 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:14,528 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:14,529 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:14,530 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:14,532 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:14,550 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:14,551 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:14,554 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:14,555 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:14,558 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:14,559 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:14,560 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:14,561 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:15,217 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-20 12:47:15,229 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-20 12:47:15,231 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-20 12:47:15,232 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-20 12:47:15,234 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-20 12:47:15,241 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-20 12:47:15,242 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-20 12:47:15,243 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-20 12:47:15,243 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-20 12:47:15,244 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-20 12:47:15,514 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-20 12:47:15,959 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:15,960 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:15,989 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:15,990 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:15,999 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:16,000 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:16,019 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:16,021 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:16,022 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:16,023 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:16,024 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:16,024 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:16,025 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:16,076 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:47:16,114 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 12:47:16,132 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i[4496,4509] [2022-11-20 12:47:16,133 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/sv-benchmarks/c/aws-c-common/aws_hash_table_foreach_harness.i[4556,4569] [2022-11-20 12:47:16,177 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:16,178 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:16,178 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:16,179 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:16,180 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:16,189 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:16,189 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:16,191 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:16,191 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:16,193 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:16,194 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:16,194 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:16,195 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:16,237 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-11-20 12:47:16,238 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-11-20 12:47:16,239 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-11-20 12:47:16,240 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-11-20 12:47:16,242 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-11-20 12:47:16,242 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-11-20 12:47:16,243 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-11-20 12:47:16,244 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-11-20 12:47:16,245 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-11-20 12:47:16,246 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-11-20 12:47:16,275 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-11-20 12:47:16,391 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:16,392 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:16,402 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:16,403 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:16,407 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:16,407 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:16,419 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:16,420 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:16,421 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:16,421 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:16,422 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:16,423 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:16,424 WARN L1569 CHandler]: Possible shadowing of function index [2022-11-20 12:47:16,464 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 12:47:16,891 INFO L208 MainTranslator]: Completed translation [2022-11-20 12:47:16,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:16 WrapperNode [2022-11-20 12:47:16,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 12:47:16,893 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 12:47:16,893 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 12:47:16,893 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 12:47:16,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:16" (1/1) ... [2022-11-20 12:47:17,075 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:16" (1/1) ... [2022-11-20 12:47:17,159 INFO L138 Inliner]: procedures = 775, calls = 2434, calls flagged for inlining = 69, calls inlined = 18, statements flattened = 937 [2022-11-20 12:47:17,159 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 12:47:17,160 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 12:47:17,161 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 12:47:17,161 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 12:47:17,173 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:16" (1/1) ... [2022-11-20 12:47:17,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:16" (1/1) ... [2022-11-20 12:47:17,185 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:16" (1/1) ... [2022-11-20 12:47:17,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:16" (1/1) ... [2022-11-20 12:47:17,265 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:16" (1/1) ... [2022-11-20 12:47:17,286 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:16" (1/1) ... [2022-11-20 12:47:17,308 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:16" (1/1) ... [2022-11-20 12:47:17,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:16" (1/1) ... [2022-11-20 12:47:17,342 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 12:47:17,343 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 12:47:17,343 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 12:47:17,344 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 12:47:17,345 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:16" (1/1) ... [2022-11-20 12:47:17,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 12:47:17,367 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:17,385 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 12:47:17,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 12:47:17,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-11-20 12:47:17,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 12:47:17,442 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-11-20 12:47:17,442 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-11-20 12:47:17,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-20 12:47:17,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-20 12:47:17,443 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2022-11-20 12:47:17,444 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2022-11-20 12:47:17,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-20 12:47:17,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 12:47:17,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-20 12:47:17,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 12:47:17,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 12:47:17,445 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-11-20 12:47:17,445 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-11-20 12:47:17,445 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-11-20 12:47:17,446 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-11-20 12:47:17,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-20 12:47:17,446 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-20 12:47:17,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 12:47:17,446 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-11-20 12:47:17,447 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-11-20 12:47:17,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-20 12:47:17,448 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-11-20 12:47:17,448 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-11-20 12:47:17,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 12:47:17,448 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2022-11-20 12:47:17,448 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2022-11-20 12:47:17,448 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2022-11-20 12:47:17,449 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2022-11-20 12:47:17,449 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 12:47:17,449 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2022-11-20 12:47:17,450 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2022-11-20 12:47:17,450 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 12:47:17,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-20 12:47:17,450 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2022-11-20 12:47:17,451 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2022-11-20 12:47:17,451 INFO L130 BoogieDeclarations]: Found specification of procedure s_get_next_element [2022-11-20 12:47:17,451 INFO L138 BoogieDeclarations]: Found implementation of procedure s_get_next_element [2022-11-20 12:47:17,451 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-20 12:47:17,451 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-20 12:47:17,452 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_int [2022-11-20 12:47:17,453 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_int [2022-11-20 12:47:17,458 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_iter_is_valid [2022-11-20 12:47:17,458 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_iter_is_valid [2022-11-20 12:47:17,459 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2022-11-20 12:47:17,459 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2022-11-20 12:47:17,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-20 12:47:17,460 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-11-20 12:47:17,461 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-11-20 12:47:17,461 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-11-20 12:47:17,462 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-11-20 12:47:17,468 INFO L130 BoogieDeclarations]: Found specification of procedure s_remove_entry [2022-11-20 12:47:17,468 INFO L138 BoogieDeclarations]: Found implementation of procedure s_remove_entry [2022-11-20 12:47:17,469 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-20 12:47:17,469 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-20 12:47:17,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 12:47:18,105 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 12:47:18,112 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 12:47:18,467 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##35: assume !true; [2022-11-20 12:47:18,467 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##11: assume !true; [2022-11-20 12:47:19,713 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !true; [2022-11-20 12:47:19,749 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 12:47:19,760 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 12:47:19,761 INFO L300 CfgBuilder]: Removed 13 assume(true) statements. [2022-11-20 12:47:19,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:47:19 BoogieIcfgContainer [2022-11-20 12:47:19,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 12:47:19,768 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 12:47:19,768 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 12:47:19,774 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 12:47:19,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 12:47:12" (1/3) ... [2022-11-20 12:47:19,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d0e806c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:47:19, skipping insertion in model container [2022-11-20 12:47:19,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 12:47:16" (2/3) ... [2022-11-20 12:47:19,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d0e806c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 12:47:19, skipping insertion in model container [2022-11-20 12:47:19,779 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 12:47:19" (3/3) ... [2022-11-20 12:47:19,781 INFO L112 eAbstractionObserver]: Analyzing ICFG aws_hash_table_foreach_harness.i [2022-11-20 12:47:19,807 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 12:47:19,807 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 12:47:19,883 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 12:47:19,892 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;@69e05a11, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 12:47:19,892 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-20 12:47:19,900 INFO L276 IsEmpty]: Start isEmpty. Operand has 288 states, 187 states have (on average 1.267379679144385) internal successors, (237), 184 states have internal predecessors, (237), 81 states have call successors, (81), 22 states have call predecessors, (81), 22 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2022-11-20 12:47:19,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-20 12:47:19,923 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:47:19,924 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:47:19,925 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:47:19,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:19,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1669380125, now seen corresponding path program 1 times [2022-11-20 12:47:19,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:19,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870528236] [2022-11-20 12:47:19,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:19,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:20,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:20,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:47:20,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870528236] [2022-11-20 12:47:20,628 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2022-11-20 12:47:20,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1262647222] [2022-11-20 12:47:20,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:20,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:47:20,630 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:20,634 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:47:20,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 12:47:21,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:21,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 2409 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-20 12:47:21,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:47:21,592 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-11-20 12:47:21,593 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:47:21,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1262647222] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:47:21,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:47:21,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 12:47:21,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984602714] [2022-11-20 12:47:21,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:47:21,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 12:47:21,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:47:21,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 12:47:21,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 12:47:21,643 INFO L87 Difference]: Start difference. First operand has 288 states, 187 states have (on average 1.267379679144385) internal successors, (237), 184 states have internal predecessors, (237), 81 states have call successors, (81), 22 states have call predecessors, (81), 22 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 12:47:21,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:47:21,725 INFO L93 Difference]: Finished difference Result 567 states and 831 transitions. [2022-11-20 12:47:21,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 12:47:21,728 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 120 [2022-11-20 12:47:21,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:47:21,742 INFO L225 Difference]: With dead ends: 567 [2022-11-20 12:47:21,742 INFO L226 Difference]: Without dead ends: 282 [2022-11-20 12:47:21,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 12:47:21,754 INFO L413 NwaCegarLoop]: 385 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:47:21,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:47:21,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-11-20 12:47:21,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2022-11-20 12:47:21,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 178 states have (on average 1.2303370786516854) internal successors, (219), 179 states have internal predecessors, (219), 81 states have call successors, (81), 22 states have call predecessors, (81), 22 states have return successors, (80), 80 states have call predecessors, (80), 80 states have call successors, (80) [2022-11-20 12:47:21,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 380 transitions. [2022-11-20 12:47:21,843 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 380 transitions. Word has length 120 [2022-11-20 12:47:21,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:47:21,844 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 380 transitions. [2022-11-20 12:47:21,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-20 12:47:21,845 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 380 transitions. [2022-11-20 12:47:21,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-11-20 12:47:21,849 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:47:21,849 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:47:21,861 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:22,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-11-20 12:47:22,061 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:47:22,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:22,065 INFO L85 PathProgramCache]: Analyzing trace with hash -262655291, now seen corresponding path program 1 times [2022-11-20 12:47:22,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:22,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260195990] [2022-11-20 12:47:22,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:22,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:22,321 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:47:22,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1308010944] [2022-11-20 12:47:22,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:22,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:47:22,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:22,328 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:47:22,362 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 12:47:23,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:23,164 INFO L263 TraceCheckSpWp]: Trace formula consists of 2437 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:47:23,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:47:23,574 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2022-11-20 12:47:23,574 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:47:23,920 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-11-20 12:47:23,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:47:23,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260195990] [2022-11-20 12:47:23,921 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:47:23,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308010944] [2022-11-20 12:47:23,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1308010944] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-20 12:47:23,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:47:23,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2022-11-20 12:47:23,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258499069] [2022-11-20 12:47:23,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:47:23,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:47:23,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:47:23,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:47:23,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-20 12:47:23,935 INFO L87 Difference]: Start difference. First operand 282 states and 380 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2022-11-20 12:47:24,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:47:24,621 INFO L93 Difference]: Finished difference Result 512 states and 707 transitions. [2022-11-20 12:47:24,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:47:24,622 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) Word has length 126 [2022-11-20 12:47:24,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:47:24,628 INFO L225 Difference]: With dead ends: 512 [2022-11-20 12:47:24,629 INFO L226 Difference]: Without dead ends: 299 [2022-11-20 12:47:24,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 238 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:47:24,632 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 408 mSDsluCounter, 1334 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 1675 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:47:24,633 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [422 Valid, 1675 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-20 12:47:24,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-11-20 12:47:24,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 299. [2022-11-20 12:47:24,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 188 states have (on average 1.2287234042553192) internal successors, (231), 190 states have internal predecessors, (231), 86 states have call successors, (86), 23 states have call predecessors, (86), 24 states have return successors, (92), 85 states have call predecessors, (92), 85 states have call successors, (92) [2022-11-20 12:47:24,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 409 transitions. [2022-11-20 12:47:24,709 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 409 transitions. Word has length 126 [2022-11-20 12:47:24,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:47:24,716 INFO L495 AbstractCegarLoop]: Abstraction has 299 states and 409 transitions. [2022-11-20 12:47:24,717 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (21), 3 states have call predecessors, (21), 2 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2022-11-20 12:47:24,717 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 409 transitions. [2022-11-20 12:47:24,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-11-20 12:47:24,728 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:47:24,729 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:47:24,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:24,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:47:24,941 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:47:24,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:24,942 INFO L85 PathProgramCache]: Analyzing trace with hash -1695610635, now seen corresponding path program 1 times [2022-11-20 12:47:24,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:24,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829060793] [2022-11-20 12:47:24,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:24,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:25,086 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:47:25,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1787111273] [2022-11-20 12:47:25,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:25,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:47:25,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:25,088 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:47:25,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 12:47:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:25,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 2442 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 12:47:25,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:47:25,896 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-20 12:47:25,896 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:47:25,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:47:25,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829060793] [2022-11-20 12:47:25,897 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:47:25,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787111273] [2022-11-20 12:47:25,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787111273] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:47:25,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:47:25,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 12:47:25,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808551888] [2022-11-20 12:47:25,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:47:25,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 12:47:25,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:47:25,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 12:47:25,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 12:47:25,900 INFO L87 Difference]: Start difference. First operand 299 states and 409 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 12:47:26,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:47:26,017 INFO L93 Difference]: Finished difference Result 558 states and 771 transitions. [2022-11-20 12:47:26,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-20 12:47:26,018 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 127 [2022-11-20 12:47:26,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:47:26,026 INFO L225 Difference]: With dead ends: 558 [2022-11-20 12:47:26,026 INFO L226 Difference]: Without dead ends: 304 [2022-11-20 12:47:26,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 12:47:26,031 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 2 mSDsluCounter, 1126 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1503 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:47:26,036 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1503 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-20 12:47:26,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-11-20 12:47:26,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 304. [2022-11-20 12:47:26,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 192 states have (on average 1.2239583333333333) internal successors, (235), 194 states have internal predecessors, (235), 86 states have call successors, (86), 23 states have call predecessors, (86), 25 states have return successors, (93), 86 states have call predecessors, (93), 85 states have call successors, (93) [2022-11-20 12:47:26,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 414 transitions. [2022-11-20 12:47:26,111 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 414 transitions. Word has length 127 [2022-11-20 12:47:26,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:47:26,111 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 414 transitions. [2022-11-20 12:47:26,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-20 12:47:26,112 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 414 transitions. [2022-11-20 12:47:26,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-20 12:47:26,114 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:47:26,115 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:47:26,131 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:26,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:47:26,327 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:47:26,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:26,327 INFO L85 PathProgramCache]: Analyzing trace with hash 818445258, now seen corresponding path program 1 times [2022-11-20 12:47:26,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:26,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52590859] [2022-11-20 12:47:26,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:26,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:26,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:28,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:47:28,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:28,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:47:28,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:28,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:47:28,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:28,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 12:47:28,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:28,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:47:28,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:28,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:47:28,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:28,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:47:28,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:28,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:47:28,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:28,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 12:47:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:28,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 12:47:28,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:28,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:47:28,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:28,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-20 12:47:28,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:29,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-20 12:47:29,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:29,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 12:47:29,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:29,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-20 12:47:29,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:29,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-20 12:47:29,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:29,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-20 12:47:29,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:29,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-20 12:47:29,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:29,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-20 12:47:29,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:29,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-20 12:47:29,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:29,298 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-11-20 12:47:29,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:47:29,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52590859] [2022-11-20 12:47:29,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52590859] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:47:29,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724056345] [2022-11-20 12:47:29,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:29,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:47:29,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:29,302 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:47:29,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 12:47:30,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:30,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 2446 conjuncts, 32 conjunts are in the unsatisfiable core [2022-11-20 12:47:30,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:47:30,371 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:47:30,856 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 12:47:30,856 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:47:30,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [724056345] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:47:30,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:47:30,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [14] total 22 [2022-11-20 12:47:30,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205321948] [2022-11-20 12:47:30,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:47:30,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 12:47:30,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:47:30,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 12:47:30,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2022-11-20 12:47:30,860 INFO L87 Difference]: Start difference. First operand 304 states and 414 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-11-20 12:47:30,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:47:30,991 INFO L93 Difference]: Finished difference Result 556 states and 768 transitions. [2022-11-20 12:47:30,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 12:47:30,992 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 133 [2022-11-20 12:47:30,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:47:30,995 INFO L225 Difference]: With dead ends: 556 [2022-11-20 12:47:30,995 INFO L226 Difference]: Without dead ends: 313 [2022-11-20 12:47:30,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2022-11-20 12:47:30,998 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 18 mSDsluCounter, 1802 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 2180 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 83 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-20 12:47:30,999 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 2180 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 83 Unchecked, 0.1s Time] [2022-11-20 12:47:31,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-11-20 12:47:31,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2022-11-20 12:47:31,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 200 states have (on average 1.225) internal successors, (245), 202 states have internal predecessors, (245), 86 states have call successors, (86), 24 states have call predecessors, (86), 26 states have return successors, (94), 86 states have call predecessors, (94), 85 states have call successors, (94) [2022-11-20 12:47:31,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 425 transitions. [2022-11-20 12:47:31,028 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 425 transitions. Word has length 133 [2022-11-20 12:47:31,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:47:31,029 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 425 transitions. [2022-11-20 12:47:31,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 9 states have internal predecessors, (67), 4 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2022-11-20 12:47:31,029 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 425 transitions. [2022-11-20 12:47:31,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-20 12:47:31,031 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:47:31,031 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 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] [2022-11-20 12:47:31,048 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:31,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:47:31,249 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:47:31,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:31,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1772385416, now seen corresponding path program 1 times [2022-11-20 12:47:31,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:31,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617172847] [2022-11-20 12:47:31,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:31,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:31,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:31,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:47:31,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:31,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:47:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:31,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:47:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:32,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 12:47:32,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:32,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:47:32,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:32,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:47:32,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:32,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:47:32,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:32,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:47:32,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:32,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 12:47:32,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:32,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 12:47:32,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:32,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:47:32,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:32,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-20 12:47:32,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:32,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-20 12:47:32,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:32,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 12:47:32,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:32,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-11-20 12:47:32,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:32,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-20 12:47:32,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:32,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-11-20 12:47:32,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:32,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-20 12:47:32,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:32,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-11-20 12:47:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:32,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-20 12:47:32,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:32,397 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2022-11-20 12:47:32,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:47:32,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617172847] [2022-11-20 12:47:32,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617172847] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:47:32,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784358520] [2022-11-20 12:47:32,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:32,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:47:32,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:32,400 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:47:32,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 12:47:33,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:33,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 2441 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:47:33,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:47:33,403 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-11-20 12:47:33,404 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:47:33,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784358520] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:47:33,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:47:33,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 13 [2022-11-20 12:47:33,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825510947] [2022-11-20 12:47:33,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:47:33,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:47:33,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:47:33,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:47:33,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-11-20 12:47:33,407 INFO L87 Difference]: Start difference. First operand 313 states and 425 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-20 12:47:33,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:47:33,793 INFO L93 Difference]: Finished difference Result 560 states and 778 transitions. [2022-11-20 12:47:33,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:47:33,794 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 133 [2022-11-20 12:47:33,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:47:33,800 INFO L225 Difference]: With dead ends: 560 [2022-11-20 12:47:33,800 INFO L226 Difference]: Without dead ends: 315 [2022-11-20 12:47:33,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-11-20 12:47:33,804 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 415 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:47:33,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 921 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 12:47:33,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-11-20 12:47:33,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2022-11-20 12:47:33,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 201 states have (on average 1.2189054726368158) internal successors, (245), 203 states have internal predecessors, (245), 87 states have call successors, (87), 24 states have call predecessors, (87), 26 states have return successors, (98), 87 states have call predecessors, (98), 86 states have call successors, (98) [2022-11-20 12:47:33,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 430 transitions. [2022-11-20 12:47:33,844 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 430 transitions. Word has length 133 [2022-11-20 12:47:33,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:47:33,845 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 430 transitions. [2022-11-20 12:47:33,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-11-20 12:47:33,845 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 430 transitions. [2022-11-20 12:47:33,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-20 12:47:33,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:47:33,848 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 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] [2022-11-20 12:47:33,865 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:34,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:47:34,060 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:47:34,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:34,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1889144309, now seen corresponding path program 1 times [2022-11-20 12:47:34,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:34,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369359100] [2022-11-20 12:47:34,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:34,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:34,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:35,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:47:35,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:35,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:47:35,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:35,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:47:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:35,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 12:47:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:35,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:47:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:35,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:47:35,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:35,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:47:35,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:35,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:47:35,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:35,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 12:47:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:35,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 12:47:35,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:35,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:47:35,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:35,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-20 12:47:35,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:35,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:47:35,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:35,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-20 12:47:35,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:35,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-20 12:47:35,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:35,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-20 12:47:35,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:35,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-11-20 12:47:35,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:35,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-20 12:47:35,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:35,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-20 12:47:35,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:35,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-20 12:47:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:35,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-20 12:47:35,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:35,596 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-11-20 12:47:35,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:47:35,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369359100] [2022-11-20 12:47:35,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369359100] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:47:35,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537585454] [2022-11-20 12:47:35,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:35,597 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:47:35,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:47:35,600 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:47:35,638 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 12:47:36,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:36,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 2470 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-20 12:47:36,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:47:38,692 WARN L859 $PredicateComparison]: unable to prove that (or (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= 0 (select (select |c_#memory_$Pointer$.offset| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset)))) (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= (select (select |c_#memory_$Pointer$.base| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset) 0)))) is different from true [2022-11-20 12:47:46,775 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 23 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:47:54,864 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:47:54,898 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-11-20 12:47:54,898 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:47:54,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537585454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:47:54,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:47:54,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2022-11-20 12:47:54,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008659301] [2022-11-20 12:47:54,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:47:54,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 12:47:54,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:47:54,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 12:47:54,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=202, Unknown=3, NotChecked=28, Total=272 [2022-11-20 12:47:54,902 INFO L87 Difference]: Start difference. First operand 315 states and 430 transitions. Second operand has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-20 12:47:55,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:47:55,401 INFO L93 Difference]: Finished difference Result 567 states and 804 transitions. [2022-11-20 12:47:55,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 12:47:55,402 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) Word has length 139 [2022-11-20 12:47:55,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:47:55,404 INFO L225 Difference]: With dead ends: 567 [2022-11-20 12:47:55,405 INFO L226 Difference]: Without dead ends: 318 [2022-11-20 12:47:55,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 18.6s TimeCoverageRelationStatistics Valid=54, Invalid=253, Unknown=3, NotChecked=32, Total=342 [2022-11-20 12:47:55,407 INFO L413 NwaCegarLoop]: 376 mSDtfsCounter, 5 mSDsluCounter, 1716 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 2092 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 515 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 12:47:55,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 2092 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 74 Invalid, 0 Unknown, 515 Unchecked, 0.3s Time] [2022-11-20 12:47:55,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-11-20 12:47:55,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 317. [2022-11-20 12:47:55,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 203 states have (on average 1.2167487684729064) internal successors, (247), 204 states have internal predecessors, (247), 87 states have call successors, (87), 25 states have call predecessors, (87), 26 states have return successors, (98), 87 states have call predecessors, (98), 86 states have call successors, (98) [2022-11-20 12:47:55,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 432 transitions. [2022-11-20 12:47:55,443 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 432 transitions. Word has length 139 [2022-11-20 12:47:55,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:47:55,444 INFO L495 AbstractCegarLoop]: Abstraction has 317 states and 432 transitions. [2022-11-20 12:47:55,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.857142857142858) internal successors, (69), 7 states have internal predecessors, (69), 3 states have call successors, (23), 3 states have call predecessors, (23), 3 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-20 12:47:55,445 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 432 transitions. [2022-11-20 12:47:55,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-20 12:47:55,449 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:47:55,449 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:47:55,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-20 12:47:55,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 12:47:55,660 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:47:55,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:47:55,660 INFO L85 PathProgramCache]: Analyzing trace with hash -817837060, now seen corresponding path program 1 times [2022-11-20 12:47:55,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:47:55,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459878830] [2022-11-20 12:47:55,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:47:55,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:47:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:58,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:47:58,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:58,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:47:58,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:58,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:47:58,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:58,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 12:47:58,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:58,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:47:58,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:58,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:47:58,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:58,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:47:58,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:58,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:47:58,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:58,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 12:47:58,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:58,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 12:47:58,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:58,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:47:58,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:58,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-20 12:47:58,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:58,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:47:58,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:58,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:47:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:58,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-20 12:47:58,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:58,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-20 12:47:58,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:58,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 12:47:58,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:58,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-20 12:47:58,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:58,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-20 12:47:58,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:58,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-20 12:47:58,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:58,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-20 12:47:58,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:59,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-11-20 12:47:59,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:47:59,131 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-20 12:47:59,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:47:59,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459878830] [2022-11-20 12:47:59,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459878830] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:47:59,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:47:59,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-11-20 12:47:59,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240907517] [2022-11-20 12:47:59,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:47:59,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 12:47:59,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:47:59,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 12:47:59,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-11-20 12:47:59,134 INFO L87 Difference]: Start difference. First operand 317 states and 432 transitions. Second operand has 18 states, 16 states have (on average 4.375) internal successors, (70), 13 states have internal predecessors, (70), 8 states have call successors, (24), 7 states have call predecessors, (24), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2022-11-20 12:48:05,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:48:05,055 INFO L93 Difference]: Finished difference Result 573 states and 800 transitions. [2022-11-20 12:48:05,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 12:48:05,056 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 4.375) internal successors, (70), 13 states have internal predecessors, (70), 8 states have call successors, (24), 7 states have call predecessors, (24), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 144 [2022-11-20 12:48:05,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:48:05,059 INFO L225 Difference]: With dead ends: 573 [2022-11-20 12:48:05,059 INFO L226 Difference]: Without dead ends: 345 [2022-11-20 12:48:05,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=205, Invalid=985, Unknown=0, NotChecked=0, Total=1190 [2022-11-20 12:48:05,062 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 741 mSDsluCounter, 1486 mSDsCounter, 0 mSdLazyCounter, 3645 mSolverCounterSat, 574 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 765 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 4219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 574 IncrementalHoareTripleChecker+Valid, 3645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:48:05,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [765 Valid, 1663 Invalid, 4219 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [574 Valid, 3645 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-20 12:48:05,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-11-20 12:48:05,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 326. [2022-11-20 12:48:05,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 209 states have (on average 1.2200956937799043) internal successors, (255), 211 states have internal predecessors, (255), 89 states have call successors, (89), 25 states have call predecessors, (89), 27 states have return successors, (109), 89 states have call predecessors, (109), 88 states have call successors, (109) [2022-11-20 12:48:05,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 453 transitions. [2022-11-20 12:48:05,103 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 453 transitions. Word has length 144 [2022-11-20 12:48:05,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:48:05,104 INFO L495 AbstractCegarLoop]: Abstraction has 326 states and 453 transitions. [2022-11-20 12:48:05,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 4.375) internal successors, (70), 13 states have internal predecessors, (70), 8 states have call successors, (24), 7 states have call predecessors, (24), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2022-11-20 12:48:05,104 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 453 transitions. [2022-11-20 12:48:05,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-20 12:48:05,107 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:48:05,107 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:48:05,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 12:48:05,108 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:48:05,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:48:05,108 INFO L85 PathProgramCache]: Analyzing trace with hash -951850566, now seen corresponding path program 1 times [2022-11-20 12:48:05,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:48:05,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391638876] [2022-11-20 12:48:05,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:48:05,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:48:05,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:07,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:48:07,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:07,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:48:07,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:07,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:48:07,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:07,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 12:48:07,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:07,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:48:07,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:07,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:48:07,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:07,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:48:07,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:07,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:48:07,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:07,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 12:48:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:07,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 12:48:07,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:07,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:48:07,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:07,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-20 12:48:07,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:07,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:48:07,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:08,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:48:08,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:08,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-20 12:48:08,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:08,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-20 12:48:08,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:08,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 12:48:08,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:08,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-20 12:48:08,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:08,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-20 12:48:08,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:08,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-20 12:48:08,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:08,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-20 12:48:08,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:08,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-11-20 12:48:08,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:08,223 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-11-20 12:48:08,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:48:08,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391638876] [2022-11-20 12:48:08,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391638876] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:48:08,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [798209158] [2022-11-20 12:48:08,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:48:08,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:48:08,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:48:08,225 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:48:08,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 12:48:09,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:09,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 2495 conjuncts, 26 conjunts are in the unsatisfiable core [2022-11-20 12:48:09,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:48:09,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:48:09,263 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-11-20 12:48:09,558 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 12:48:09,695 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-20 12:48:09,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:48:09,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [798209158] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:48:09,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:48:09,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [18] total 29 [2022-11-20 12:48:09,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740573368] [2022-11-20 12:48:09,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:48:09,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 12:48:09,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:48:09,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 12:48:09,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=736, Unknown=0, NotChecked=0, Total=812 [2022-11-20 12:48:09,698 INFO L87 Difference]: Start difference. First operand 326 states and 453 transitions. Second operand has 13 states, 11 states have (on average 6.909090909090909) internal successors, (76), 12 states have internal predecessors, (76), 8 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) [2022-11-20 12:48:11,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:48:11,506 INFO L93 Difference]: Finished difference Result 635 states and 879 transitions. [2022-11-20 12:48:11,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 12:48:11,507 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.909090909090909) internal successors, (76), 12 states have internal predecessors, (76), 8 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) Word has length 144 [2022-11-20 12:48:11,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:48:11,510 INFO L225 Difference]: With dead ends: 635 [2022-11-20 12:48:11,510 INFO L226 Difference]: Without dead ends: 376 [2022-11-20 12:48:11,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 173 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=152, Invalid=1330, Unknown=0, NotChecked=0, Total=1482 [2022-11-20 12:48:11,513 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 494 mSDsluCounter, 3125 mSDsCounter, 0 mSdLazyCounter, 698 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 3503 SdHoareTripleChecker+Invalid, 909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 97 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:48:11,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [497 Valid, 3503 Invalid, 909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 698 Invalid, 0 Unknown, 97 Unchecked, 1.4s Time] [2022-11-20 12:48:11,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-11-20 12:48:11,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 372. [2022-11-20 12:48:11,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 246 states have (on average 1.2276422764227641) internal successors, (302), 247 states have internal predecessors, (302), 91 states have call successors, (91), 33 states have call predecessors, (91), 34 states have return successors, (101), 91 states have call predecessors, (101), 90 states have call successors, (101) [2022-11-20 12:48:11,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 494 transitions. [2022-11-20 12:48:11,561 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 494 transitions. Word has length 144 [2022-11-20 12:48:11,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:48:11,562 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 494 transitions. [2022-11-20 12:48:11,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.909090909090909) internal successors, (76), 12 states have internal predecessors, (76), 8 states have call successors, (24), 4 states have call predecessors, (24), 4 states have return successors, (22), 6 states have call predecessors, (22), 7 states have call successors, (22) [2022-11-20 12:48:11,563 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 494 transitions. [2022-11-20 12:48:11,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-11-20 12:48:11,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:48:11,565 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:48:11,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 12:48:11,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-20 12:48:11,783 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:48:11,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:48:11,783 INFO L85 PathProgramCache]: Analyzing trace with hash 2132172247, now seen corresponding path program 1 times [2022-11-20 12:48:11,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:48:11,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856052371] [2022-11-20 12:48:11,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:48:11,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:48:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:14,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:48:14,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:14,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:48:14,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:14,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:48:14,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:14,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 12:48:14,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:14,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:48:14,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:14,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:48:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:14,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:48:14,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:14,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:48:14,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:14,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 12:48:14,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:14,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 12:48:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:14,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:48:14,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:14,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-20 12:48:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:14,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:48:14,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:14,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:48:14,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:14,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-20 12:48:14,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:14,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-20 12:48:14,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:14,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 12:48:14,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:14,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-20 12:48:14,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:14,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-11-20 12:48:14,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:14,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:48:14,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:14,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:48:14,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:15,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-20 12:48:15,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:15,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-11-20 12:48:15,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:15,301 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2022-11-20 12:48:15,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:48:15,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856052371] [2022-11-20 12:48:15,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856052371] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:48:15,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:48:15,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-11-20 12:48:15,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756600568] [2022-11-20 12:48:15,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:48:15,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-20 12:48:15,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:48:15,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-20 12:48:15,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2022-11-20 12:48:15,304 INFO L87 Difference]: Start difference. First operand 372 states and 494 transitions. Second operand has 19 states, 16 states have (on average 4.5625) internal successors, (73), 14 states have internal predecessors, (73), 9 states have call successors, (24), 6 states have call predecessors, (24), 4 states have return successors, (23), 7 states have call predecessors, (23), 8 states have call successors, (23) [2022-11-20 12:48:20,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:48:20,499 INFO L93 Difference]: Finished difference Result 623 states and 855 transitions. [2022-11-20 12:48:20,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-20 12:48:20,501 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 16 states have (on average 4.5625) internal successors, (73), 14 states have internal predecessors, (73), 9 states have call successors, (24), 6 states have call predecessors, (24), 4 states have return successors, (23), 7 states have call predecessors, (23), 8 states have call successors, (23) Word has length 148 [2022-11-20 12:48:20,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:48:20,505 INFO L225 Difference]: With dead ends: 623 [2022-11-20 12:48:20,505 INFO L226 Difference]: Without dead ends: 400 [2022-11-20 12:48:20,507 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=187, Invalid=1003, Unknown=0, NotChecked=0, Total=1190 [2022-11-20 12:48:20,507 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 418 mSDsluCounter, 1310 mSDsCounter, 0 mSdLazyCounter, 3446 mSolverCounterSat, 201 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 1479 SdHoareTripleChecker+Invalid, 3647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 201 IncrementalHoareTripleChecker+Valid, 3446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:48:20,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [438 Valid, 1479 Invalid, 3647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [201 Valid, 3446 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-20 12:48:20,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-11-20 12:48:20,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 372. [2022-11-20 12:48:20,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 246 states have (on average 1.2276422764227641) internal successors, (302), 247 states have internal predecessors, (302), 91 states have call successors, (91), 33 states have call predecessors, (91), 34 states have return successors, (101), 91 states have call predecessors, (101), 90 states have call successors, (101) [2022-11-20 12:48:20,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 494 transitions. [2022-11-20 12:48:20,551 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 494 transitions. Word has length 148 [2022-11-20 12:48:20,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:48:20,552 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 494 transitions. [2022-11-20 12:48:20,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 16 states have (on average 4.5625) internal successors, (73), 14 states have internal predecessors, (73), 9 states have call successors, (24), 6 states have call predecessors, (24), 4 states have return successors, (23), 7 states have call predecessors, (23), 8 states have call successors, (23) [2022-11-20 12:48:20,552 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 494 transitions. [2022-11-20 12:48:20,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-11-20 12:48:20,555 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:48:20,555 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:48:20,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 12:48:20,556 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:48:20,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:48:20,556 INFO L85 PathProgramCache]: Analyzing trace with hash -737363795, now seen corresponding path program 1 times [2022-11-20 12:48:20,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:48:20,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758396066] [2022-11-20 12:48:20,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:48:20,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:48:20,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:23,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:48:23,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:23,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:48:23,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:23,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:48:23,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:23,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 12:48:23,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:23,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:48:23,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:23,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:48:23,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:24,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:48:24,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:24,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:48:24,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:24,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 12:48:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:24,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 12:48:24,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:24,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:48:24,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:24,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-20 12:48:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:24,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:48:24,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:24,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:48:24,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:24,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-20 12:48:24,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:24,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-20 12:48:24,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:24,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-20 12:48:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:24,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-20 12:48:24,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:24,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-20 12:48:24,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:24,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-20 12:48:24,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:24,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-11-20 12:48:24,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:24,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-11-20 12:48:24,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:24,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:48:24,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:24,505 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-11-20 12:48:24,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:48:24,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758396066] [2022-11-20 12:48:24,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758396066] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:48:24,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984657897] [2022-11-20 12:48:24,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:48:24,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:48:24,507 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:48:24,508 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:48:24,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 12:48:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:25,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 2527 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 12:48:25,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:48:25,584 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-11-20 12:48:25,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:48:25,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984657897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:48:25,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:48:25,586 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 20 [2022-11-20 12:48:25,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877448670] [2022-11-20 12:48:25,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:48:25,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:48:25,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:48:25,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:48:25,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2022-11-20 12:48:25,592 INFO L87 Difference]: Start difference. First operand 372 states and 494 transitions. Second operand has 7 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-20 12:48:25,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:48:25,926 INFO L93 Difference]: Finished difference Result 685 states and 921 transitions. [2022-11-20 12:48:25,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:48:25,927 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 153 [2022-11-20 12:48:25,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:48:25,933 INFO L225 Difference]: With dead ends: 685 [2022-11-20 12:48:25,933 INFO L226 Difference]: Without dead ends: 384 [2022-11-20 12:48:25,937 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2022-11-20 12:48:25,938 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 2 mSDsluCounter, 1726 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2084 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:48:25,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2084 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:48:25,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-11-20 12:48:25,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 375. [2022-11-20 12:48:25,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 248 states have (on average 1.2258064516129032) internal successors, (304), 250 states have internal predecessors, (304), 91 states have call successors, (91), 33 states have call predecessors, (91), 35 states have return successors, (104), 91 states have call predecessors, (104), 90 states have call successors, (104) [2022-11-20 12:48:25,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 499 transitions. [2022-11-20 12:48:25,992 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 499 transitions. Word has length 153 [2022-11-20 12:48:25,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:48:25,995 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 499 transitions. [2022-11-20 12:48:25,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-20 12:48:25,995 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 499 transitions. [2022-11-20 12:48:25,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-20 12:48:25,999 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:48:25,999 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:48:26,016 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-20 12:48:26,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-20 12:48:26,211 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:48:26,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:48:26,212 INFO L85 PathProgramCache]: Analyzing trace with hash 538022179, now seen corresponding path program 2 times [2022-11-20 12:48:26,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:48:26,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499447484] [2022-11-20 12:48:26,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:48:26,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:48:26,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:31,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:48:31,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:31,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:48:31,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:31,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:48:31,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:31,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 12:48:31,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:31,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:48:31,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:31,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:48:31,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:31,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:48:31,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:31,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:48:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:31,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 12:48:31,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:31,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 12:48:31,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:31,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:48:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:31,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-20 12:48:31,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:31,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:48:31,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:31,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:48:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:31,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-20 12:48:31,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:31,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-20 12:48:31,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:31,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:48:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:31,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:48:31,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:31,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-20 12:48:31,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:31,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-20 12:48:31,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:32,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-20 12:48:32,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:32,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-20 12:48:32,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:32,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-20 12:48:32,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:32,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-20 12:48:32,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:32,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:48:32,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:32,268 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 6 proven. 26 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-11-20 12:48:32,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:48:32,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499447484] [2022-11-20 12:48:32,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499447484] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:48:32,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476618668] [2022-11-20 12:48:32,269 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:48:32,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:48:32,270 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:48:32,271 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:48:32,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 12:48:33,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:48:33,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:48:33,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 2581 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-20 12:48:33,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:48:33,390 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-11-20 12:48:33,391 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:48:33,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476618668] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:48:33,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:48:33,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [24] total 29 [2022-11-20 12:48:33,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830996787] [2022-11-20 12:48:33,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:48:33,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:48:33,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:48:33,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:48:33,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=748, Unknown=0, NotChecked=0, Total=812 [2022-11-20 12:48:33,393 INFO L87 Difference]: Start difference. First operand 375 states and 499 transitions. Second operand has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-20 12:48:33,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:48:33,725 INFO L93 Difference]: Finished difference Result 670 states and 907 transitions. [2022-11-20 12:48:33,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:48:33,726 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 164 [2022-11-20 12:48:33,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:48:33,728 INFO L225 Difference]: With dead ends: 670 [2022-11-20 12:48:33,729 INFO L226 Difference]: Without dead ends: 384 [2022-11-20 12:48:33,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=802, Unknown=0, NotChecked=0, Total=870 [2022-11-20 12:48:33,731 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 2 mSDsluCounter, 1728 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2086 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:48:33,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2086 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:48:33,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2022-11-20 12:48:33,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 378. [2022-11-20 12:48:33,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 250 states have (on average 1.224) internal successors, (306), 253 states have internal predecessors, (306), 91 states have call successors, (91), 33 states have call predecessors, (91), 36 states have return successors, (104), 91 states have call predecessors, (104), 90 states have call successors, (104) [2022-11-20 12:48:33,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 501 transitions. [2022-11-20 12:48:33,774 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 501 transitions. Word has length 164 [2022-11-20 12:48:33,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:48:33,775 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 501 transitions. [2022-11-20 12:48:33,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-20 12:48:33,775 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 501 transitions. [2022-11-20 12:48:33,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-11-20 12:48:33,778 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:48:33,779 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:48:33,797 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 12:48:33,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-20 12:48:33,991 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:48:33,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:48:33,991 INFO L85 PathProgramCache]: Analyzing trace with hash -2001607967, now seen corresponding path program 3 times [2022-11-20 12:48:33,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:48:33,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137825157] [2022-11-20 12:48:33,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:48:33,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:48:34,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:39,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:48:39,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:39,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:48:39,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:39,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:48:39,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:39,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 12:48:39,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:39,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:48:39,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:39,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:48:39,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:39,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:48:39,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:39,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:48:39,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:39,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 12:48:39,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:39,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 12:48:39,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:39,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:48:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:39,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-20 12:48:39,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:39,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:48:39,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:40,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:48:40,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:40,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-20 12:48:40,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:40,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-20 12:48:40,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:40,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:48:40,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:40,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:48:40,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:40,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-20 12:48:40,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:40,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-20 12:48:40,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:40,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-20 12:48:40,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:40,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-20 12:48:40,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:40,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:48:40,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:40,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:48:40,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:40,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-20 12:48:40,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:40,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-11-20 12:48:40,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:40,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:48:40,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:48:40,655 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 12 proven. 22 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-11-20 12:48:40,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:48:40,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137825157] [2022-11-20 12:48:40,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137825157] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:48:40,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [184176400] [2022-11-20 12:48:40,656 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 12:48:40,656 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:48:40,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:48:40,657 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:48:40,663 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 12:48:41,693 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 12:48:41,694 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:48:41,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 2058 conjuncts, 141 conjunts are in the unsatisfiable core [2022-11-20 12:48:41,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:48:42,163 INFO L321 Elim1Store]: treesize reduction 80, result has 17.5 percent of original size [2022-11-20 12:48:42,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 62 treesize of output 86 [2022-11-20 12:48:42,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:48:42,232 INFO L321 Elim1Store]: treesize reduction 44, result has 35.3 percent of original size [2022-11-20 12:48:42,233 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 69 [2022-11-20 12:48:42,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:48:42,291 INFO L321 Elim1Store]: treesize reduction 64, result has 36.0 percent of original size [2022-11-20 12:48:42,292 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 74 treesize of output 78 [2022-11-20 12:48:42,352 INFO L321 Elim1Store]: treesize reduction 52, result has 22.4 percent of original size [2022-11-20 12:48:42,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 29 treesize of output 56 [2022-11-20 12:48:42,379 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-11-20 12:48:42,405 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 36 [2022-11-20 12:48:42,413 INFO L350 Elim1Store]: Elim1 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 0 case distinctions, treesize of input 36 treesize of output 15 [2022-11-20 12:48:45,334 WARN L859 $PredicateComparison]: unable to prove that (or (exists ((v_s_get_next_element_~iter.base_BEFORE_CALL_10 Int)) (and (= v_s_get_next_element_~iter.base_BEFORE_CALL_10 (select (select |c_#memory_$Pointer$.base| v_s_get_next_element_~iter.base_BEFORE_CALL_10) 0)) (<= 2 v_s_get_next_element_~iter.base_BEFORE_CALL_10) (= (select (select |c_#memory_$Pointer$.offset| v_s_get_next_element_~iter.base_BEFORE_CALL_10) 0) 32))) (exists ((v_s_get_next_element_~iter.base_BEFORE_CALL_10 Int)) (and (= (let ((.cse0 (select (select |c_#memory_$Pointer$.base| v_s_get_next_element_~iter.base_BEFORE_CALL_10) 0)) (.cse1 (select (select |c_#memory_$Pointer$.offset| v_s_get_next_element_~iter.base_BEFORE_CALL_10) 0))) (select (select |c_#memory_int| (select (select |c_#memory_$Pointer$.base| .cse0) .cse1)) (+ 40 (select (select |c_#memory_$Pointer$.offset| .cse0) .cse1)))) (select (select |c_#memory_int| v_s_get_next_element_~iter.base_BEFORE_CALL_10) 32)) (<= 2 v_s_get_next_element_~iter.base_BEFORE_CALL_10))) (exists ((v_s_get_next_element_~iter.base_BEFORE_CALL_10 Int)) (and (= v_s_get_next_element_~iter.base_BEFORE_CALL_10 (select (select |c_#memory_$Pointer$.base| v_s_get_next_element_~iter.base_BEFORE_CALL_10) 0)) (<= 2 v_s_get_next_element_~iter.base_BEFORE_CALL_10) (= (select (select |c_#memory_$Pointer$.offset| v_s_get_next_element_~iter.base_BEFORE_CALL_10) 0) 0)))) is different from true [2022-11-20 12:48:47,974 WARN L859 $PredicateComparison]: unable to prove that (or (exists ((v_s_get_next_element_~iter.base_BEFORE_CALL_11 Int)) (and (<= 2 v_s_get_next_element_~iter.base_BEFORE_CALL_11) (= (let ((.cse0 (select (select |c_#memory_$Pointer$.base| v_s_get_next_element_~iter.base_BEFORE_CALL_11) 0)) (.cse1 (select (select |c_#memory_$Pointer$.offset| v_s_get_next_element_~iter.base_BEFORE_CALL_11) 0))) (select (select |c_#memory_int| (select (select |c_#memory_$Pointer$.base| .cse0) .cse1)) (+ 40 (select (select |c_#memory_$Pointer$.offset| .cse0) .cse1)))) (select (select |c_#memory_int| v_s_get_next_element_~iter.base_BEFORE_CALL_11) 32)))) (exists ((v_s_get_next_element_~iter.base_BEFORE_CALL_11 Int)) (and (= (select (select |c_#memory_$Pointer$.offset| v_s_get_next_element_~iter.base_BEFORE_CALL_11) 0) 32) (= v_s_get_next_element_~iter.base_BEFORE_CALL_11 (select (select |c_#memory_$Pointer$.base| v_s_get_next_element_~iter.base_BEFORE_CALL_11) 0)) (<= 2 v_s_get_next_element_~iter.base_BEFORE_CALL_11))) (exists ((v_s_get_next_element_~iter.base_BEFORE_CALL_11 Int)) (and (= (select (select |c_#memory_$Pointer$.offset| v_s_get_next_element_~iter.base_BEFORE_CALL_11) 0) 0) (= v_s_get_next_element_~iter.base_BEFORE_CALL_11 (select (select |c_#memory_$Pointer$.base| v_s_get_next_element_~iter.base_BEFORE_CALL_11) 0)) (<= 2 v_s_get_next_element_~iter.base_BEFORE_CALL_11)))) is different from true [2022-11-20 12:48:56,541 WARN L233 SmtUtils]: Spent 6.31s on a formula simplification that was a NOOP. DAG size: 40 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:49:05,076 WARN L233 SmtUtils]: Spent 8.24s on a formula simplification that was a NOOP. DAG size: 54 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:49:15,411 WARN L233 SmtUtils]: Spent 10.08s on a formula simplification that was a NOOP. DAG size: 54 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:49:23,865 WARN L233 SmtUtils]: Spent 8.08s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:49:25,913 WARN L859 $PredicateComparison]: unable to prove that (and (or (exists ((v_s_get_next_element_~iter.base_BEFORE_CALL_11 Int)) (and (<= 2 v_s_get_next_element_~iter.base_BEFORE_CALL_11) (= (let ((.cse0 (select (select |c_#memory_$Pointer$.base| v_s_get_next_element_~iter.base_BEFORE_CALL_11) 0)) (.cse1 (select (select |c_#memory_$Pointer$.offset| v_s_get_next_element_~iter.base_BEFORE_CALL_11) 0))) (select (select |c_#memory_int| (select (select |c_#memory_$Pointer$.base| .cse0) .cse1)) (+ 40 (select (select |c_#memory_$Pointer$.offset| .cse0) .cse1)))) (select (select |c_#memory_int| v_s_get_next_element_~iter.base_BEFORE_CALL_11) 32)))) (exists ((v_s_get_next_element_~iter.base_BEFORE_CALL_11 Int)) (and (= (select (select |c_#memory_$Pointer$.offset| v_s_get_next_element_~iter.base_BEFORE_CALL_11) 0) 32) (= v_s_get_next_element_~iter.base_BEFORE_CALL_11 (select (select |c_#memory_$Pointer$.base| v_s_get_next_element_~iter.base_BEFORE_CALL_11) 0)) (<= 2 v_s_get_next_element_~iter.base_BEFORE_CALL_11))) (exists ((v_s_get_next_element_~iter.base_BEFORE_CALL_11 Int)) (and (= (select (select |c_#memory_$Pointer$.offset| v_s_get_next_element_~iter.base_BEFORE_CALL_11) 0) 0) (= v_s_get_next_element_~iter.base_BEFORE_CALL_11 (select (select |c_#memory_$Pointer$.base| v_s_get_next_element_~iter.base_BEFORE_CALL_11) 0)) (<= 2 v_s_get_next_element_~iter.base_BEFORE_CALL_11)))) (or (exists ((|v_aws_hash_table_is_valid_#in~map.base_BEFORE_CALL_1| Int) (|v_aws_hash_table_is_valid_#in~map.offset_BEFORE_CALL_1| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_aws_hash_table_is_valid_#in~map.base_BEFORE_CALL_1|) |v_aws_hash_table_is_valid_#in~map.offset_BEFORE_CALL_1|) 0))) (exists ((|v_aws_hash_table_is_valid_#in~map.base_BEFORE_CALL_1| Int) (|v_aws_hash_table_is_valid_#in~map.offset_BEFORE_CALL_1| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_aws_hash_table_is_valid_#in~map.base_BEFORE_CALL_1|) |v_aws_hash_table_is_valid_#in~map.offset_BEFORE_CALL_1|) 0))))) is different from true [2022-11-20 12:49:44,258 WARN L233 SmtUtils]: Spent 18.06s on a formula simplification that was a NOOP. DAG size: 53 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:49:58,966 WARN L233 SmtUtils]: Spent 14.44s on a formula simplification that was a NOOP. DAG size: 58 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:50:30,547 WARN L233 SmtUtils]: Spent 30.79s on a formula simplification. DAG size of input: 68 DAG size of output: 65 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:50:46,255 WARN L233 SmtUtils]: Spent 14.89s on a formula simplification. DAG size of input: 74 DAG size of output: 61 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:50:54,857 WARN L233 SmtUtils]: Spent 8.10s on a formula simplification that was a NOOP. DAG size: 58 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:51:13,515 WARN L233 SmtUtils]: Spent 18.23s on a formula simplification. DAG size of input: 62 DAG size of output: 61 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:51:16,221 WARN L859 $PredicateComparison]: unable to prove that (or (exists ((v_s_get_next_element_~iter.base_BEFORE_CALL_12 Int)) (let ((.cse1 (select (select |c_#memory_$Pointer$.base| v_s_get_next_element_~iter.base_BEFORE_CALL_12) 0)) (.cse2 (select (select |c_#memory_$Pointer$.offset| v_s_get_next_element_~iter.base_BEFORE_CALL_12) 0))) (let ((.cse0 (select (select |c_#memory_$Pointer$.base| .cse1) .cse2))) (and (= (select (select |c_#memory_int| v_s_get_next_element_~iter.base_BEFORE_CALL_12) 32) (select (select |c_#memory_int| .cse0) (+ 40 (select (select |c_#memory_$Pointer$.offset| .cse1) .cse2)))) (not (= .cse0 0)) (<= 2 v_s_get_next_element_~iter.base_BEFORE_CALL_12))))) (exists ((v_s_get_next_element_~iter.base_BEFORE_CALL_12 Int)) (and (= (select (select |c_#memory_$Pointer$.offset| v_s_get_next_element_~iter.base_BEFORE_CALL_12) 0) 0) (= (select (select |c_#memory_$Pointer$.base| v_s_get_next_element_~iter.base_BEFORE_CALL_12) 0) v_s_get_next_element_~iter.base_BEFORE_CALL_12) (<= 2 v_s_get_next_element_~iter.base_BEFORE_CALL_12))) (exists ((v_s_get_next_element_~iter.base_BEFORE_CALL_12 Int)) (let ((.cse4 (select (select |c_#memory_$Pointer$.base| v_s_get_next_element_~iter.base_BEFORE_CALL_12) 0)) (.cse5 (select (select |c_#memory_$Pointer$.offset| v_s_get_next_element_~iter.base_BEFORE_CALL_12) 0))) (let ((.cse3 (select (select |c_#memory_$Pointer$.offset| .cse4) .cse5))) (and (not (= .cse3 0)) (= (select (select |c_#memory_int| v_s_get_next_element_~iter.base_BEFORE_CALL_12) 32) (select (select |c_#memory_int| (select (select |c_#memory_$Pointer$.base| .cse4) .cse5)) (+ 40 .cse3))) (<= 2 v_s_get_next_element_~iter.base_BEFORE_CALL_12))))) (exists ((v_s_get_next_element_~iter.base_BEFORE_CALL_12 Int)) (let ((.cse7 (select (select |c_#memory_$Pointer$.base| v_s_get_next_element_~iter.base_BEFORE_CALL_12) 0)) (.cse6 (select (select |c_#memory_$Pointer$.offset| v_s_get_next_element_~iter.base_BEFORE_CALL_12) 0))) (and (= 32 .cse6) (= .cse7 v_s_get_next_element_~iter.base_BEFORE_CALL_12) (not (= (select (select |c_#memory_$Pointer$.base| .cse7) .cse6) 0)) (<= 2 v_s_get_next_element_~iter.base_BEFORE_CALL_12)))) (exists ((v_s_get_next_element_~iter.base_BEFORE_CALL_12 Int)) (let ((.cse9 (select (select |c_#memory_$Pointer$.offset| v_s_get_next_element_~iter.base_BEFORE_CALL_12) 0)) (.cse8 (select (select |c_#memory_$Pointer$.base| v_s_get_next_element_~iter.base_BEFORE_CALL_12) 0))) (and (not (= (select (select |c_#memory_$Pointer$.offset| .cse8) .cse9) 0)) (= 32 .cse9) (= .cse8 v_s_get_next_element_~iter.base_BEFORE_CALL_12) (<= 2 v_s_get_next_element_~iter.base_BEFORE_CALL_12))))) is different from true [2022-11-20 12:51:28,661 WARN L233 SmtUtils]: Spent 12.10s on a formula simplification that was a NOOP. DAG size: 45 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:51:45,239 WARN L233 SmtUtils]: Spent 16.17s on a formula simplification that was a NOOP. DAG size: 47 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:51:46,398 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:51:46,400 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:51:46,402 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:51:46,403 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:51:46,432 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-20 12:51:46,433 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 145 treesize of output 121 [2022-11-20 12:51:47,974 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:51:47,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:51:47,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:51:47,983 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:51:48,107 INFO L321 Elim1Store]: treesize reduction 252, result has 4.2 percent of original size [2022-11-20 12:51:48,107 INFO L350 Elim1Store]: Elim1 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 3 case distinctions, treesize of input 142 treesize of output 127 [2022-11-20 12:51:48,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:51:48,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:51:48,123 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:51:48,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:51:48,170 INFO L321 Elim1Store]: treesize reduction 252, result has 4.2 percent of original size [2022-11-20 12:51:48,171 INFO L350 Elim1Store]: Elim1 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 3 case distinctions, treesize of input 142 treesize of output 127 [2022-11-20 12:51:53,204 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 1 proven. 63 refuted. 0 times theorem prover too weak. 84 trivial. 48 not checked. [2022-11-20 12:51:53,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:52:06,779 WARN L233 SmtUtils]: Spent 10.06s on a formula simplification that was a NOOP. DAG size: 33 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:52:20,563 WARN L233 SmtUtils]: Spent 10.06s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:52:33,410 WARN L233 SmtUtils]: Spent 10.06s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:52:43,705 WARN L233 SmtUtils]: Spent 10.04s on a formula simplification that was a NOOP. DAG size: 38 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:52:47,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [184176400] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:52:47,139 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-11-20 12:52:47,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 38] total 66 [2022-11-20 12:52:47,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182073603] [2022-11-20 12:52:47,140 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-11-20 12:52:47,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-11-20 12:52:47,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:52:47,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-11-20 12:52:47,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=5282, Unknown=8, NotChecked=596, Total=6162 [2022-11-20 12:52:47,144 INFO L87 Difference]: Start difference. First operand 378 states and 501 transitions. Second operand has 66 states, 56 states have (on average 2.9107142857142856) internal successors, (163), 51 states have internal predecessors, (163), 24 states have call successors, (52), 15 states have call predecessors, (52), 15 states have return successors, (49), 19 states have call predecessors, (49), 21 states have call successors, (49) [2022-11-20 12:53:04,401 WARN L233 SmtUtils]: Spent 9.54s on a formula simplification that was a NOOP. DAG size: 54 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:53:15,391 WARN L233 SmtUtils]: Spent 9.81s on a formula simplification that was a NOOP. DAG size: 59 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:53:23,239 WARN L233 SmtUtils]: Spent 7.70s on a formula simplification that was a NOOP. DAG size: 47 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:53:30,613 WARN L233 SmtUtils]: Spent 6.91s on a formula simplification that was a NOOP. DAG size: 59 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:53:43,767 WARN L233 SmtUtils]: Spent 8.07s on a formula simplification that was a NOOP. DAG size: 54 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:53:52,769 WARN L233 SmtUtils]: Spent 8.23s on a formula simplification that was a NOOP. DAG size: 66 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:54:03,008 WARN L233 SmtUtils]: Spent 10.09s on a formula simplification that was a NOOP. DAG size: 63 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:54:12,297 WARN L233 SmtUtils]: Spent 8.88s on a formula simplification that was a NOOP. DAG size: 66 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:54:35,407 WARN L233 SmtUtils]: Spent 18.06s on a formula simplification that was a NOOP. DAG size: 60 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:54:54,783 WARN L233 SmtUtils]: Spent 10.07s on a formula simplification that was a NOOP. DAG size: 74 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:55:20,460 WARN L233 SmtUtils]: Spent 16.07s on a formula simplification that was a NOOP. DAG size: 65 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:55:43,588 WARN L233 SmtUtils]: Spent 17.74s on a formula simplification that was a NOOP. DAG size: 71 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:55:58,702 WARN L233 SmtUtils]: Spent 14.08s on a formula simplification that was a NOOP. DAG size: 76 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:56:18,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:56:18,705 INFO L93 Difference]: Finished difference Result 827 states and 1112 transitions. [2022-11-20 12:56:18,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2022-11-20 12:56:18,706 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 56 states have (on average 2.9107142857142856) internal successors, (163), 51 states have internal predecessors, (163), 24 states have call successors, (52), 15 states have call predecessors, (52), 15 states have return successors, (49), 19 states have call predecessors, (49), 21 states have call successors, (49) Word has length 175 [2022-11-20 12:56:18,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:56:18,709 INFO L225 Difference]: With dead ends: 827 [2022-11-20 12:56:18,709 INFO L226 Difference]: Without dead ends: 561 [2022-11-20 12:56:18,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 208 SyntacticMatches, 2 SemanticMatches, 147 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 4966 ImplicationChecksByTransitivity, 439.2s TimeCoverageRelationStatistics Valid=1277, Invalid=19598, Unknown=21, NotChecked=1156, Total=22052 [2022-11-20 12:56:18,716 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 1341 mSDsluCounter, 4801 mSDsCounter, 0 mSdLazyCounter, 9258 mSolverCounterSat, 1071 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1342 SdHoareTripleChecker+Valid, 4956 SdHoareTripleChecker+Invalid, 18127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1071 IncrementalHoareTripleChecker+Valid, 9258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7798 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2022-11-20 12:56:18,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1342 Valid, 4956 Invalid, 18127 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1071 Valid, 9258 Invalid, 0 Unknown, 7798 Unchecked, 12.4s Time] [2022-11-20 12:56:18,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-11-20 12:56:18,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 502. [2022-11-20 12:56:18,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 345 states have (on average 1.2347826086956522) internal successors, (426), 348 states have internal predecessors, (426), 105 states have call successors, (105), 48 states have call predecessors, (105), 51 states have return successors, (123), 105 states have call predecessors, (123), 104 states have call successors, (123) [2022-11-20 12:56:18,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 654 transitions. [2022-11-20 12:56:18,770 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 654 transitions. Word has length 175 [2022-11-20 12:56:18,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:56:18,770 INFO L495 AbstractCegarLoop]: Abstraction has 502 states and 654 transitions. [2022-11-20 12:56:18,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 56 states have (on average 2.9107142857142856) internal successors, (163), 51 states have internal predecessors, (163), 24 states have call successors, (52), 15 states have call predecessors, (52), 15 states have return successors, (49), 19 states have call predecessors, (49), 21 states have call successors, (49) [2022-11-20 12:56:18,771 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 654 transitions. [2022-11-20 12:56:18,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-11-20 12:56:18,774 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:56:18,774 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:56:18,788 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-11-20 12:56:18,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 12:56:18,984 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:56:18,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:56:18,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1706553315, now seen corresponding path program 1 times [2022-11-20 12:56:18,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:56:18,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033948623] [2022-11-20 12:56:18,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:56:18,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:56:19,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:19,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:56:19,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:19,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:56:19,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:19,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:56:19,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:19,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 12:56:19,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:19,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:56:19,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:19,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:56:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:19,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:56:19,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:19,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:56:19,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:19,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 12:56:19,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:19,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 12:56:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:19,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:56:19,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:19,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-20 12:56:19,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:19,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:56:19,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:19,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:56:19,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:19,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-20 12:56:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:19,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-20 12:56:19,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:19,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:56:19,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:19,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:56:19,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:19,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-20 12:56:19,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:19,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-20 12:56:19,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:19,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-20 12:56:19,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:19,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-20 12:56:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:19,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:56:19,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:19,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:56:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:19,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-11-20 12:56:19,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:19,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-11-20 12:56:19,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:19,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:56:19,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:19,863 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2022-11-20 12:56:19,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:56:19,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033948623] [2022-11-20 12:56:19,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2033948623] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:56:19,867 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:56:19,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 12:56:19,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170774563] [2022-11-20 12:56:19,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:56:19,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 12:56:19,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:56:19,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 12:56:19,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-20 12:56:19,872 INFO L87 Difference]: Start difference. First operand 502 states and 654 transitions. Second operand has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (25), 6 states have call predecessors, (25), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-20 12:56:21,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:56:21,732 INFO L93 Difference]: Finished difference Result 804 states and 1085 transitions. [2022-11-20 12:56:21,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 12:56:21,733 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (25), 6 states have call predecessors, (25), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 175 [2022-11-20 12:56:21,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:56:21,736 INFO L225 Difference]: With dead ends: 804 [2022-11-20 12:56:21,736 INFO L226 Difference]: Without dead ends: 496 [2022-11-20 12:56:21,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2022-11-20 12:56:21,742 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 322 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 838 SdHoareTripleChecker+Invalid, 1496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:56:21,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 838 Invalid, 1496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-20 12:56:21,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2022-11-20 12:56:21,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 484. [2022-11-20 12:56:21,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 331 states have (on average 1.2175226586102719) internal successors, (403), 334 states have internal predecessors, (403), 103 states have call successors, (103), 46 states have call predecessors, (103), 49 states have return successors, (117), 103 states have call predecessors, (117), 102 states have call successors, (117) [2022-11-20 12:56:21,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 623 transitions. [2022-11-20 12:56:21,793 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 623 transitions. Word has length 175 [2022-11-20 12:56:21,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:56:21,793 INFO L495 AbstractCegarLoop]: Abstraction has 484 states and 623 transitions. [2022-11-20 12:56:21,793 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.777777777777778) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (25), 6 states have call predecessors, (25), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-20 12:56:21,794 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 623 transitions. [2022-11-20 12:56:21,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-20 12:56:21,796 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:56:21,796 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:56:21,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 12:56:21,797 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:56:21,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:56:21,797 INFO L85 PathProgramCache]: Analyzing trace with hash 539676297, now seen corresponding path program 1 times [2022-11-20 12:56:21,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:56:21,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79712511] [2022-11-20 12:56:21,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:56:21,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:56:21,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:26,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:56:26,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:26,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:56:26,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:26,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:56:26,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:26,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 12:56:26,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:26,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:56:26,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:26,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:56:26,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:26,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:56:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:26,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:56:26,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:26,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-20 12:56:26,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:26,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-20 12:56:26,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:26,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:56:26,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:26,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-20 12:56:26,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:26,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:56:26,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:26,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:56:26,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:26,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-20 12:56:26,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:26,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-20 12:56:26,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:26,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:56:26,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:26,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:56:26,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:26,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-11-20 12:56:26,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:26,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-11-20 12:56:26,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:26,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-20 12:56:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:26,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-11-20 12:56:26,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:26,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:56:26,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:26,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:56:26,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:26,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-11-20 12:56:26,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:26,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-20 12:56:26,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:27,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:56:27,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:27,258 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 12 proven. 23 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2022-11-20 12:56:27,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:56:27,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79712511] [2022-11-20 12:56:27,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79712511] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:56:27,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661827471] [2022-11-20 12:56:27,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:56:27,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:56:27,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:56:27,262 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:56:27,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 12:56:28,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:28,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 2654 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-20 12:56:28,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:56:28,223 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-11-20 12:56:28,224 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:56:28,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661827471] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:56:28,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:56:28,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [30] total 34 [2022-11-20 12:56:28,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576862956] [2022-11-20 12:56:28,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:56:28,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 12:56:28,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:56:28,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 12:56:28,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1039, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 12:56:28,227 INFO L87 Difference]: Start difference. First operand 484 states and 623 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-20 12:56:28,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:56:28,482 INFO L93 Difference]: Finished difference Result 918 states and 1188 transitions. [2022-11-20 12:56:28,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-20 12:56:28,483 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 176 [2022-11-20 12:56:28,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:56:28,486 INFO L225 Difference]: With dead ends: 918 [2022-11-20 12:56:28,486 INFO L226 Difference]: Without dead ends: 484 [2022-11-20 12:56:28,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=87, Invalid=1103, Unknown=0, NotChecked=0, Total=1190 [2022-11-20 12:56:28,489 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 2 mSDsluCounter, 1368 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1724 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:56:28,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 1724 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 12:56:28,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-11-20 12:56:28,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 479. [2022-11-20 12:56:28,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 327 states have (on average 1.2140672782874617) internal successors, (397), 330 states have internal predecessors, (397), 103 states have call successors, (103), 46 states have call predecessors, (103), 48 states have return successors, (116), 102 states have call predecessors, (116), 102 states have call successors, (116) [2022-11-20 12:56:28,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 616 transitions. [2022-11-20 12:56:28,537 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 616 transitions. Word has length 176 [2022-11-20 12:56:28,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:56:28,538 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 616 transitions. [2022-11-20 12:56:28,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (25), 2 states have call predecessors, (25), 4 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-20 12:56:28,538 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 616 transitions. [2022-11-20 12:56:28,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-20 12:56:28,541 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:56:28,541 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:56:28,557 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 12:56:28,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:56:28,753 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:56:28,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:56:28,753 INFO L85 PathProgramCache]: Analyzing trace with hash 400215387, now seen corresponding path program 1 times [2022-11-20 12:56:28,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:56:28,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656959045] [2022-11-20 12:56:28,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:56:28,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:56:28,826 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:56:28,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1280303710] [2022-11-20 12:56:28,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:56:28,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:56:28,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:56:28,828 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:56:28,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 12:56:29,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:56:29,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 2759 conjuncts, 101 conjunts are in the unsatisfiable core [2022-11-20 12:56:29,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:56:29,959 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:56:29,960 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-11-20 12:56:29,970 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:56:29,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-11-20 12:56:31,033 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:56:31,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:56:31,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:56:31,038 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:56:31,117 INFO L321 Elim1Store]: treesize reduction 252, result has 4.2 percent of original size [2022-11-20 12:56:31,117 INFO L350 Elim1Store]: Elim1 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 3 case distinctions, treesize of input 69 treesize of output 78 [2022-11-20 12:56:31,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:56:31,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:56:31,126 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:56:31,127 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:56:31,132 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:56:31,133 INFO L350 Elim1Store]: Elim1 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 2 case distinctions, treesize of input 69 treesize of output 78 [2022-11-20 12:56:32,298 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 107 proven. 5 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-20 12:56:32,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:56:42,772 WARN L233 SmtUtils]: Spent 10.04s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:56:53,035 WARN L233 SmtUtils]: Spent 10.06s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:57:03,185 WARN L233 SmtUtils]: Spent 10.06s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:57:11,714 WARN L233 SmtUtils]: Spent 8.44s on a formula simplification that was a NOOP. DAG size: 38 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:57:12,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:57:12,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656959045] [2022-11-20 12:57:12,025 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:57:12,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280303710] [2022-11-20 12:57:12,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280303710] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:57:12,025 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:57:12,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2022-11-20 12:57:12,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725278992] [2022-11-20 12:57:12,026 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 12:57:12,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-11-20 12:57:12,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:57:12,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-11-20 12:57:12,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=999, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 12:57:12,028 INFO L87 Difference]: Start difference. First operand 479 states and 616 transitions. Second operand has 25 states, 21 states have (on average 4.476190476190476) internal successors, (94), 24 states have internal predecessors, (94), 12 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2022-11-20 12:57:13,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:57:13,274 INFO L93 Difference]: Finished difference Result 733 states and 969 transitions. [2022-11-20 12:57:13,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-20 12:57:13,275 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 4.476190476190476) internal successors, (94), 24 states have internal predecessors, (94), 12 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) Word has length 182 [2022-11-20 12:57:13,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:57:13,277 INFO L225 Difference]: With dead ends: 733 [2022-11-20 12:57:13,277 INFO L226 Difference]: Without dead ends: 488 [2022-11-20 12:57:13,280 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 167 SyntacticMatches, 6 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 41.2s TimeCoverageRelationStatistics Valid=191, Invalid=1615, Unknown=0, NotChecked=0, Total=1806 [2022-11-20 12:57:13,280 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 489 mSDsluCounter, 1865 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 490 SdHoareTripleChecker+Valid, 2232 SdHoareTripleChecker+Invalid, 688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 319 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:57:13,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [490 Valid, 2232 Invalid, 688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 241 Invalid, 0 Unknown, 319 Unchecked, 0.6s Time] [2022-11-20 12:57:13,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 488 states. [2022-11-20 12:57:13,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 488 to 484. [2022-11-20 12:57:13,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 484 states, 332 states have (on average 1.2108433734939759) internal successors, (402), 333 states have internal predecessors, (402), 103 states have call successors, (103), 47 states have call predecessors, (103), 48 states have return successors, (116), 103 states have call predecessors, (116), 102 states have call successors, (116) [2022-11-20 12:57:13,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 621 transitions. [2022-11-20 12:57:13,334 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 621 transitions. Word has length 182 [2022-11-20 12:57:13,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:57:13,335 INFO L495 AbstractCegarLoop]: Abstraction has 484 states and 621 transitions. [2022-11-20 12:57:13,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 4.476190476190476) internal successors, (94), 24 states have internal predecessors, (94), 12 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2022-11-20 12:57:13,335 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 621 transitions. [2022-11-20 12:57:13,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-20 12:57:13,338 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:57:13,338 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:57:13,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 12:57:13,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:57:13,551 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:57:13,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:57:13,551 INFO L85 PathProgramCache]: Analyzing trace with hash -510431116, now seen corresponding path program 1 times [2022-11-20 12:57:13,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:57:13,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398814652] [2022-11-20 12:57:13,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:57:13,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:57:13,618 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:57:13,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [687272259] [2022-11-20 12:57:13,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:57:13,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:57:13,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:57:13,619 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:57:13,622 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 12:57:14,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:57:14,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 2752 conjuncts, 93 conjunts are in the unsatisfiable core [2022-11-20 12:57:14,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:57:14,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:57:14,729 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-11-20 12:57:14,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:57:14,737 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-11-20 12:57:15,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:57:15,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:57:15,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:57:15,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:57:15,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:57:15,709 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:57:15,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:57:15,711 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:57:15,713 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-20 12:57:15,717 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:57:15,717 INFO L350 Elim1Store]: Elim1 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 2 case distinctions, treesize of input 69 treesize of output 78 [2022-11-20 12:57:15,732 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:57:15,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:57:15,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:57:15,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:57:15,769 INFO L321 Elim1Store]: treesize reduction 252, result has 4.2 percent of original size [2022-11-20 12:57:15,769 INFO L350 Elim1Store]: Elim1 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 3 case distinctions, treesize of input 69 treesize of output 78 [2022-11-20 12:57:16,974 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 109 proven. 3 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-20 12:57:16,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:57:27,461 WARN L233 SmtUtils]: Spent 10.04s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:57:37,799 WARN L233 SmtUtils]: Spent 10.05s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:57:47,973 WARN L233 SmtUtils]: Spent 10.05s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:57:58,099 WARN L233 SmtUtils]: Spent 10.04s on a formula simplification that was a NOOP. DAG size: 38 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:57:58,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:57:58,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398814652] [2022-11-20 12:57:58,405 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:57:58,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [687272259] [2022-11-20 12:57:58,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [687272259] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:57:58,405 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:57:58,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2022-11-20 12:57:58,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230028282] [2022-11-20 12:57:58,406 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 12:57:58,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-20 12:57:58,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:57:58,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-20 12:57:58,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=939, Unknown=0, NotChecked=0, Total=1056 [2022-11-20 12:57:58,408 INFO L87 Difference]: Start difference. First operand 484 states and 621 transitions. Second operand has 24 states, 21 states have (on average 4.476190476190476) internal successors, (94), 23 states have internal predecessors, (94), 12 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2022-11-20 12:57:59,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:57:59,192 INFO L93 Difference]: Finished difference Result 758 states and 1006 transitions. [2022-11-20 12:57:59,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-20 12:57:59,193 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 4.476190476190476) internal successors, (94), 23 states have internal predecessors, (94), 12 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) Word has length 182 [2022-11-20 12:57:59,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:57:59,196 INFO L225 Difference]: With dead ends: 758 [2022-11-20 12:57:59,197 INFO L226 Difference]: Without dead ends: 498 [2022-11-20 12:57:59,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 169 SyntacticMatches, 6 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 42.6s TimeCoverageRelationStatistics Valid=165, Invalid=1395, Unknown=0, NotChecked=0, Total=1560 [2022-11-20 12:57:59,199 INFO L413 NwaCegarLoop]: 367 mSDtfsCounter, 488 mSDsluCounter, 2688 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 3055 SdHoareTripleChecker+Invalid, 810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 500 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-20 12:57:59,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 3055 Invalid, 810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 186 Invalid, 0 Unknown, 500 Unchecked, 0.5s Time] [2022-11-20 12:57:59,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 498 states. [2022-11-20 12:57:59,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 498 to 494. [2022-11-20 12:57:59,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 342 states have (on average 1.2046783625730995) internal successors, (412), 343 states have internal predecessors, (412), 103 states have call successors, (103), 47 states have call predecessors, (103), 48 states have return successors, (116), 103 states have call predecessors, (116), 102 states have call successors, (116) [2022-11-20 12:57:59,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 631 transitions. [2022-11-20 12:57:59,254 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 631 transitions. Word has length 182 [2022-11-20 12:57:59,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:57:59,255 INFO L495 AbstractCegarLoop]: Abstraction has 494 states and 631 transitions. [2022-11-20 12:57:59,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 4.476190476190476) internal successors, (94), 23 states have internal predecessors, (94), 12 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (26), 10 states have call predecessors, (26), 10 states have call successors, (26) [2022-11-20 12:57:59,256 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 631 transitions. [2022-11-20 12:57:59,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-11-20 12:57:59,257 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:57:59,258 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:57:59,280 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 12:57:59,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 12:57:59,471 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:57:59,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:57:59,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1048548953, now seen corresponding path program 1 times [2022-11-20 12:57:59,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:57:59,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953486220] [2022-11-20 12:57:59,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:57:59,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:57:59,533 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:57:59,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1855262143] [2022-11-20 12:57:59,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:57:59,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:57:59,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:57:59,535 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:57:59,558 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 12:58:04,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:58:04,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 2794 conjuncts, 336 conjunts are in the unsatisfiable core [2022-11-20 12:58:04,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:58:04,175 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 12:58:04,851 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 12:58:04,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 12:58:04,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 12:58:05,451 INFO L321 Elim1Store]: treesize reduction 112, result has 28.7 percent of original size [2022-11-20 12:58:05,451 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 142 treesize of output 166 [2022-11-20 12:58:05,731 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 12:58:05,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:58:05,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:58:05,922 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 18 [2022-11-20 12:58:05,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:58:05,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:58:05,939 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 39 [2022-11-20 12:58:05,956 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:58:05,971 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:58:07,227 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 12:58:07,227 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 12:58:07,237 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:58:07,258 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 12:58:07,259 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 96 [2022-11-20 12:58:07,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:58:07,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:58:07,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:58:07,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 75 [2022-11-20 12:58:07,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:58:07,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-20 12:58:08,654 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 12:58:08,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2022-11-20 12:58:08,961 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:58:08,965 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:58:08,966 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 41 [2022-11-20 12:58:08,981 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:58:08,982 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 71 [2022-11-20 12:58:09,006 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:58:09,007 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:58:09,008 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 55 [2022-11-20 12:58:09,021 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 21 [2022-11-20 12:58:11,806 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 83 proven. 113 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-20 12:58:11,806 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:58:12,524 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4324 (Array Int Int))) (< 0 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_hash_iter_begin_~#iter~1#1.base| v_ArrVal_4324) |c_ULTIMATE.start_aws_hash_iter_begin_~state~11#1.base|) (+ 40 |c_ULTIMATE.start_aws_hash_iter_begin_~state~11#1.offset|)) 18446744073709551616))) is different from false [2022-11-20 12:58:12,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:58:12,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953486220] [2022-11-20 12:58:12,566 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:58:12,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855262143] [2022-11-20 12:58:12,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855262143] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:58:12,567 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:58:12,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2022-11-20 12:58:12,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18386382] [2022-11-20 12:58:12,567 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 12:58:12,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-20 12:58:12,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:58:12,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-20 12:58:12,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1428, Unknown=8, NotChecked=76, Total=1640 [2022-11-20 12:58:12,569 INFO L87 Difference]: Start difference. First operand 494 states and 631 transitions. Second operand has 36 states, 29 states have (on average 3.689655172413793) internal successors, (107), 32 states have internal predecessors, (107), 19 states have call successors, (31), 8 states have call predecessors, (31), 11 states have return successors, (29), 17 states have call predecessors, (29), 18 states have call successors, (29) [2022-11-20 12:58:17,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:58:17,939 INFO L93 Difference]: Finished difference Result 883 states and 1133 transitions. [2022-11-20 12:58:17,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-11-20 12:58:17,940 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 29 states have (on average 3.689655172413793) internal successors, (107), 32 states have internal predecessors, (107), 19 states have call successors, (31), 8 states have call predecessors, (31), 11 states have return successors, (29), 17 states have call predecessors, (29), 18 states have call successors, (29) Word has length 192 [2022-11-20 12:58:17,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:58:17,944 INFO L225 Difference]: With dead ends: 883 [2022-11-20 12:58:17,944 INFO L226 Difference]: Without dead ends: 598 [2022-11-20 12:58:17,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 204 SyntacticMatches, 20 SemanticMatches, 65 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1305 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=330, Invalid=3956, Unknown=8, NotChecked=128, Total=4422 [2022-11-20 12:58:17,947 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 265 mSDsluCounter, 1793 mSDsCounter, 0 mSdLazyCounter, 1502 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 1979 SdHoareTripleChecker+Invalid, 4864 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 1502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3136 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-20 12:58:17,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 1979 Invalid, 4864 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 1502 Invalid, 0 Unknown, 3136 Unchecked, 2.6s Time] [2022-11-20 12:58:17,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2022-11-20 12:58:18,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 590. [2022-11-20 12:58:18,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 408 states have (on average 1.1740196078431373) internal successors, (479), 409 states have internal predecessors, (479), 119 states have call successors, (119), 60 states have call predecessors, (119), 62 states have return successors, (137), 120 states have call predecessors, (137), 118 states have call successors, (137) [2022-11-20 12:58:18,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 735 transitions. [2022-11-20 12:58:18,020 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 735 transitions. Word has length 192 [2022-11-20 12:58:18,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:58:18,020 INFO L495 AbstractCegarLoop]: Abstraction has 590 states and 735 transitions. [2022-11-20 12:58:18,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 29 states have (on average 3.689655172413793) internal successors, (107), 32 states have internal predecessors, (107), 19 states have call successors, (31), 8 states have call predecessors, (31), 11 states have return successors, (29), 17 states have call predecessors, (29), 18 states have call successors, (29) [2022-11-20 12:58:18,021 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 735 transitions. [2022-11-20 12:58:18,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-11-20 12:58:18,023 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:58:18,023 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:58:18,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-20 12:58:18,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-20 12:58:18,247 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:58:18,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:58:18,248 INFO L85 PathProgramCache]: Analyzing trace with hash 804300324, now seen corresponding path program 1 times [2022-11-20 12:58:18,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:58:18,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830969806] [2022-11-20 12:58:18,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:58:18,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:58:18,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:58:18,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:58:18,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:58:18,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-20 12:58:18,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:58:18,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 12:58:18,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:58:18,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-20 12:58:18,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:58:18,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-20 12:58:18,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:58:18,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:58:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:58:18,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:58:18,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:58:18,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-20 12:58:18,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:58:18,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-20 12:58:18,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:58:18,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:58:18,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:58:18,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-20 12:58:18,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:58:18,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-20 12:58:18,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:58:18,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 12:58:18,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:58:18,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-20 12:58:18,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:58:18,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:58:18,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:58:18,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:58:18,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:58:18,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-11-20 12:58:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:58:18,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-20 12:58:18,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:58:18,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:58:18,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:58:18,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:58:18,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:58:18,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-20 12:58:18,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:58:19,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-20 12:58:19,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:58:19,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-20 12:58:19,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:58:19,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-20 12:58:19,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:58:19,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:58:19,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:58:19,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:58:19,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:58:19,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-11-20 12:58:19,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:58:19,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-11-20 12:58:19,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:58:19,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-20 12:58:19,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:58:19,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 12:58:19,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:58:19,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-20 12:58:19,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:58:19,092 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2022-11-20 12:58:19,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:58:19,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830969806] [2022-11-20 12:58:19,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830969806] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:58:19,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:58:19,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-20 12:58:19,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759879168] [2022-11-20 12:58:19,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:58:19,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 12:58:19,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:58:19,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 12:58:19,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-20 12:58:19,094 INFO L87 Difference]: Start difference. First operand 590 states and 735 transitions. Second operand has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (27), 6 states have call predecessors, (27), 4 states have return successors, (25), 4 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-20 12:58:21,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:58:21,163 INFO L93 Difference]: Finished difference Result 1059 states and 1334 transitions. [2022-11-20 12:58:21,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-20 12:58:21,164 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (27), 6 states have call predecessors, (27), 4 states have return successors, (25), 4 states have call predecessors, (25), 2 states have call successors, (25) Word has length 198 [2022-11-20 12:58:21,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:58:21,168 INFO L225 Difference]: With dead ends: 1059 [2022-11-20 12:58:21,168 INFO L226 Difference]: Without dead ends: 582 [2022-11-20 12:58:21,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2022-11-20 12:58:21,171 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 309 mSDsluCounter, 892 mSDsCounter, 0 mSdLazyCounter, 1727 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 1068 SdHoareTripleChecker+Invalid, 1927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 1727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-20 12:58:21,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 1068 Invalid, 1927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 1727 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-20 12:58:21,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2022-11-20 12:58:21,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 582. [2022-11-20 12:58:21,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 582 states, 403 states have (on average 1.173697270471464) internal successors, (473), 403 states have internal predecessors, (473), 117 states have call successors, (117), 60 states have call predecessors, (117), 61 states have return successors, (133), 118 states have call predecessors, (133), 116 states have call successors, (133) [2022-11-20 12:58:21,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 723 transitions. [2022-11-20 12:58:21,267 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 723 transitions. Word has length 198 [2022-11-20 12:58:21,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:58:21,268 INFO L495 AbstractCegarLoop]: Abstraction has 582 states and 723 transitions. [2022-11-20 12:58:21,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.545454545454546) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (27), 6 states have call predecessors, (27), 4 states have return successors, (25), 4 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-20 12:58:21,268 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 723 transitions. [2022-11-20 12:58:21,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-11-20 12:58:21,270 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:58:21,271 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:58:21,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 12:58:21,271 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:58:21,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:58:21,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1136387251, now seen corresponding path program 1 times [2022-11-20 12:58:21,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:58:21,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155267366] [2022-11-20 12:58:21,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:58:21,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:58:21,344 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:58:21,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2130823006] [2022-11-20 12:58:21,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:58:21,345 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:58:21,345 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:58:21,348 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:58:21,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-20 12:58:24,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:58:24,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 2813 conjuncts, 345 conjunts are in the unsatisfiable core [2022-11-20 12:58:24,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:58:24,193 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 12:58:24,432 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 12:58:24,432 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 12:58:24,467 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 12:58:24,928 INFO L321 Elim1Store]: treesize reduction 112, result has 28.7 percent of original size [2022-11-20 12:58:24,929 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 142 treesize of output 166 [2022-11-20 12:58:25,186 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 12:58:25,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:58:25,270 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:58:25,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:58:25,345 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:58:25,352 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-20 12:58:25,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:58:25,366 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:58:27,387 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 12:58:27,388 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 12:58:27,394 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:58:27,415 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 12:58:27,416 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 117 treesize of output 106 [2022-11-20 12:58:27,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:58:27,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:58:27,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:58:27,431 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 96 [2022-11-20 12:58:27,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:58:27,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 51 [2022-11-20 12:58:28,753 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 12:58:28,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2022-11-20 12:58:29,018 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_4865 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_4865))) (exists ((v_ArrVal_4864 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_4864) |c_#memory_int|)) (exists ((v_ArrVal_4863 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_4863) |c_#memory_$Pointer$.base|))) is different from true [2022-11-20 12:58:29,049 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:58:29,050 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 38 [2022-11-20 12:58:29,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 61 [2022-11-20 12:58:29,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 52 [2022-11-20 12:58:29,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:58:29,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:58:29,189 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 61 treesize of output 51 [2022-11-20 12:58:29,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:58:29,203 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 81 [2022-11-20 12:58:29,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:58:29,222 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:58:29,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 111 treesize of output 90 [2022-11-20 12:58:29,241 INFO L350 Elim1Store]: Elim1 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 32 treesize of output 31 [2022-11-20 12:58:32,391 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 112 proven. 110 refuted. 0 times theorem prover too weak. 10 trivial. 1 not checked. [2022-11-20 12:58:32,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:58:33,088 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4868 (Array Int Int))) (< 0 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_hash_iter_begin_~#iter~1#1.base| v_ArrVal_4868) |c_ULTIMATE.start_aws_hash_iter_begin_~state~11#1.base|) (+ 40 |c_ULTIMATE.start_aws_hash_iter_begin_~state~11#1.offset|)) 18446744073709551616))) is different from false [2022-11-20 12:58:33,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:58:33,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155267366] [2022-11-20 12:58:33,165 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:58:33,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130823006] [2022-11-20 12:58:33,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130823006] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:58:33,166 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:58:33,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2022-11-20 12:58:33,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083593668] [2022-11-20 12:58:33,166 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 12:58:33,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-11-20 12:58:33,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:58:33,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-11-20 12:58:33,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=1993, Unknown=15, NotChecked=182, Total=2352 [2022-11-20 12:58:33,169 INFO L87 Difference]: Start difference. First operand 582 states and 723 transitions. Second operand has 44 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 38 states have internal predecessors, (125), 19 states have call successors, (32), 9 states have call predecessors, (32), 14 states have return successors, (30), 18 states have call predecessors, (30), 18 states have call successors, (30) [2022-11-20 12:58:42,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:58:42,687 INFO L93 Difference]: Finished difference Result 953 states and 1206 transitions. [2022-11-20 12:58:42,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-11-20 12:58:42,688 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 38 states have internal predecessors, (125), 19 states have call successors, (32), 9 states have call predecessors, (32), 14 states have return successors, (30), 18 states have call predecessors, (30), 18 states have call successors, (30) Word has length 193 [2022-11-20 12:58:42,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:58:42,691 INFO L225 Difference]: With dead ends: 953 [2022-11-20 12:58:42,692 INFO L226 Difference]: Without dead ends: 668 [2022-11-20 12:58:42,694 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 203 SyntacticMatches, 19 SemanticMatches, 84 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2107 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=472, Invalid=6465, Unknown=43, NotChecked=330, Total=7310 [2022-11-20 12:58:42,694 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 256 mSDsluCounter, 2065 mSDsCounter, 0 mSdLazyCounter, 2932 mSolverCounterSat, 230 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 2251 SdHoareTripleChecker+Invalid, 6545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 230 IncrementalHoareTripleChecker+Valid, 2932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3383 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:58:42,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 2251 Invalid, 6545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [230 Valid, 2932 Invalid, 0 Unknown, 3383 Unchecked, 5.2s Time] [2022-11-20 12:58:42,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2022-11-20 12:58:42,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 658. [2022-11-20 12:58:42,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 455 states have (on average 1.164835164835165) internal successors, (530), 458 states have internal predecessors, (530), 129 states have call successors, (129), 69 states have call predecessors, (129), 73 states have return successors, (148), 130 states have call predecessors, (148), 128 states have call successors, (148) [2022-11-20 12:58:42,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 807 transitions. [2022-11-20 12:58:42,772 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 807 transitions. Word has length 193 [2022-11-20 12:58:42,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:58:42,772 INFO L495 AbstractCegarLoop]: Abstraction has 658 states and 807 transitions. [2022-11-20 12:58:42,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 37 states have (on average 3.3783783783783785) internal successors, (125), 38 states have internal predecessors, (125), 19 states have call successors, (32), 9 states have call predecessors, (32), 14 states have return successors, (30), 18 states have call predecessors, (30), 18 states have call successors, (30) [2022-11-20 12:58:42,773 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 807 transitions. [2022-11-20 12:58:42,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-11-20 12:58:42,775 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:58:42,775 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:58:42,794 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-20 12:58:42,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:58:42,983 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:58:42,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:58:42,983 INFO L85 PathProgramCache]: Analyzing trace with hash 199249307, now seen corresponding path program 1 times [2022-11-20 12:58:42,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:58:42,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343454796] [2022-11-20 12:58:42,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:58:42,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:58:43,049 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:58:43,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [924573103] [2022-11-20 12:58:43,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:58:43,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:58:43,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:58:43,051 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:58:43,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-20 12:58:44,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:58:44,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 2798 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-20 12:58:44,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:58:44,099 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-11-20 12:58:44,099 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 12:58:44,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:58:44,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343454796] [2022-11-20 12:58:44,100 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:58:44,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [924573103] [2022-11-20 12:58:44,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [924573103] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 12:58:44,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 12:58:44,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 12:58:44,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87401182] [2022-11-20 12:58:44,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 12:58:44,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 12:58:44,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:58:44,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 12:58:44,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 12:58:44,102 INFO L87 Difference]: Start difference. First operand 658 states and 807 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 4 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-20 12:58:44,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:58:44,177 INFO L93 Difference]: Finished difference Result 1014 states and 1273 transitions. [2022-11-20 12:58:44,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 12:58:44,178 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 4 states have call predecessors, (25), 2 states have call successors, (25) Word has length 198 [2022-11-20 12:58:44,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:58:44,180 INFO L225 Difference]: With dead ends: 1014 [2022-11-20 12:58:44,180 INFO L226 Difference]: Without dead ends: 551 [2022-11-20 12:58:44,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 192 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-20 12:58:44,182 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 2 mSDsluCounter, 1860 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2235 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-20 12:58:44,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2235 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-20 12:58:44,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2022-11-20 12:58:44,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 551. [2022-11-20 12:58:44,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 377 states have (on average 1.16710875331565) internal successors, (440), 380 states have internal predecessors, (440), 111 states have call successors, (111), 59 states have call predecessors, (111), 62 states have return successors, (125), 111 states have call predecessors, (125), 110 states have call successors, (125) [2022-11-20 12:58:44,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 676 transitions. [2022-11-20 12:58:44,253 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 676 transitions. Word has length 198 [2022-11-20 12:58:44,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:58:44,254 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 676 transitions. [2022-11-20 12:58:44,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (27), 2 states have call predecessors, (27), 4 states have return successors, (25), 4 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-20 12:58:44,254 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 676 transitions. [2022-11-20 12:58:44,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-11-20 12:58:44,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:58:44,256 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:58:44,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-20 12:58:44,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:58:44,468 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:58:44,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:58:44,468 INFO L85 PathProgramCache]: Analyzing trace with hash 207114854, now seen corresponding path program 1 times [2022-11-20 12:58:44,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:58:44,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792574891] [2022-11-20 12:58:44,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:58:44,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:58:44,523 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:58:44,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [756847356] [2022-11-20 12:58:44,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:58:44,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:58:44,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:58:44,525 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:58:44,527 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-20 12:58:52,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:58:52,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 2824 conjuncts, 423 conjunts are in the unsatisfiable core [2022-11-20 12:58:52,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:58:52,349 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 12:58:52,651 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 12:58:52,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 12:58:52,687 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 12:58:53,176 INFO L321 Elim1Store]: treesize reduction 116, result has 26.1 percent of original size [2022-11-20 12:58:53,176 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 11 case distinctions, treesize of input 117 treesize of output 137 [2022-11-20 12:58:53,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-20 12:58:53,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:58:53,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:58:53,501 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:58:53,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-20 12:58:53,513 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:58:53,520 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:58:53,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-11-20 12:58:55,785 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 12:58:55,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 12:58:55,796 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:58:55,814 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 12:58:55,814 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 93 [2022-11-20 12:58:55,822 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:58:55,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:58:55,825 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 78 [2022-11-20 12:58:55,830 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:58:55,831 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 38 [2022-11-20 12:58:57,528 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 12:58:57,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2022-11-20 12:58:58,073 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 169 proven. 36 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-20 12:58:58,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:59:00,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:59:00,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792574891] [2022-11-20 12:59:00,893 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:59:00,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756847356] [2022-11-20 12:59:00,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [756847356] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:59:00,893 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:59:00,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2022-11-20 12:59:00,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531718172] [2022-11-20 12:59:00,894 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 12:59:00,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-20 12:59:00,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:59:00,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-20 12:59:00,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=2559, Unknown=11, NotChecked=0, Total=2756 [2022-11-20 12:59:00,896 INFO L87 Difference]: Start difference. First operand 551 states and 676 transitions. Second operand has 42 states, 36 states have (on average 3.1944444444444446) internal successors, (115), 35 states have internal predecessors, (115), 15 states have call successors, (30), 7 states have call predecessors, (30), 14 states have return successors, (28), 16 states have call predecessors, (28), 15 states have call successors, (28) [2022-11-20 12:59:04,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:59:04,724 INFO L93 Difference]: Finished difference Result 838 states and 1062 transitions. [2022-11-20 12:59:04,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-11-20 12:59:04,725 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 36 states have (on average 3.1944444444444446) internal successors, (115), 35 states have internal predecessors, (115), 15 states have call successors, (30), 7 states have call predecessors, (30), 14 states have return successors, (28), 16 states have call predecessors, (28), 15 states have call successors, (28) Word has length 196 [2022-11-20 12:59:04,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:59:04,727 INFO L225 Difference]: With dead ends: 838 [2022-11-20 12:59:04,728 INFO L226 Difference]: Without dead ends: 507 [2022-11-20 12:59:04,730 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 186 SyntacticMatches, 13 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1394 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=308, Invalid=4790, Unknown=14, NotChecked=0, Total=5112 [2022-11-20 12:59:04,730 INFO L413 NwaCegarLoop]: 242 mSDtfsCounter, 130 mSDsluCounter, 3278 mSDsCounter, 0 mSdLazyCounter, 1120 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 3520 SdHoareTripleChecker+Invalid, 5062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3871 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 12:59:04,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 3520 Invalid, 5062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1120 Invalid, 0 Unknown, 3871 Unchecked, 1.7s Time] [2022-11-20 12:59:04,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2022-11-20 12:59:04,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 505. [2022-11-20 12:59:04,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 505 states, 345 states have (on average 1.173913043478261) internal successors, (405), 348 states have internal predecessors, (405), 103 states have call successors, (103), 53 states have call predecessors, (103), 56 states have return successors, (116), 103 states have call predecessors, (116), 102 states have call successors, (116) [2022-11-20 12:59:04,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 624 transitions. [2022-11-20 12:59:04,802 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 624 transitions. Word has length 196 [2022-11-20 12:59:04,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:59:04,803 INFO L495 AbstractCegarLoop]: Abstraction has 505 states and 624 transitions. [2022-11-20 12:59:04,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 36 states have (on average 3.1944444444444446) internal successors, (115), 35 states have internal predecessors, (115), 15 states have call successors, (30), 7 states have call predecessors, (30), 14 states have return successors, (28), 16 states have call predecessors, (28), 15 states have call successors, (28) [2022-11-20 12:59:04,803 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 624 transitions. [2022-11-20 12:59:04,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-11-20 12:59:04,805 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:59:04,806 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:59:04,836 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-11-20 12:59:05,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:59:05,019 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:59:05,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:59:05,020 INFO L85 PathProgramCache]: Analyzing trace with hash -149932839, now seen corresponding path program 2 times [2022-11-20 12:59:05,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:59:05,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103829703] [2022-11-20 12:59:05,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:59:05,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:59:05,090 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:59:05,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [187009157] [2022-11-20 12:59:05,090 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 12:59:05,090 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:59:05,090 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:59:05,091 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:59:05,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-20 12:59:06,647 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 12:59:06,647 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 12:59:06,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 2832 conjuncts, 356 conjunts are in the unsatisfiable core [2022-11-20 12:59:06,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:59:06,692 INFO L350 Elim1Store]: Elim1 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 [2022-11-20 12:59:06,996 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 12:59:06,997 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 12:59:07,046 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:59:07,616 INFO L321 Elim1Store]: treesize reduction 173, result has 26.4 percent of original size [2022-11-20 12:59:07,616 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 15 case distinctions, treesize of input 147 treesize of output 186 [2022-11-20 12:59:07,851 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:59:07,925 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:59:07,938 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-11-20 12:59:07,938 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 26 [2022-11-20 12:59:08,016 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:59:08,024 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 14 [2022-11-20 12:59:08,030 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-20 12:59:08,036 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-20 12:59:08,042 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 25 [2022-11-20 12:59:08,867 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-20 12:59:08,867 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-20 12:59:08,873 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:59:08,895 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-20 12:59:08,896 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 82 treesize of output 75 [2022-11-20 12:59:08,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:59:08,905 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 55 [2022-11-20 12:59:08,911 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:59:08,912 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-11-20 12:59:11,281 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-20 12:59:11,281 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2022-11-20 12:59:11,462 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5907 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_5907))) (exists ((v_ArrVal_5909 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_5909) |c_#memory_$Pointer$.offset|)) (exists ((v_ArrVal_5908 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_5908) |c_#memory_int|))) is different from true [2022-11-20 12:59:11,472 WARN L859 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_5912 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_5912) |c_#memory_int|)) (exists ((v_ArrVal_5911 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.base)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_5911) |c_#memory_$Pointer$.base|)) (exists ((v_ArrVal_5910 (Array Int Int))) (= (store |c_old(#memory_$Pointer$.offset)| |c_#Ultimate.C_memset_#ptr.base| v_ArrVal_5910) |c_#memory_$Pointer$.offset|))) is different from true [2022-11-20 12:59:11,506 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2022-11-20 12:59:11,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:59:11,516 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2022-11-20 12:59:11,525 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 38 [2022-11-20 12:59:11,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:59:11,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:59:11,634 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 41 [2022-11-20 12:59:11,641 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:59:11,642 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 69 [2022-11-20 12:59:11,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:59:11,657 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 87 treesize of output 74 [2022-11-20 12:59:11,672 INFO L350 Elim1Store]: Elim1 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 22 treesize of output 21 [2022-11-20 12:59:14,306 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 115 proven. 99 refuted. 0 times theorem prover too weak. 18 trivial. 3 not checked. [2022-11-20 12:59:14,307 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:59:15,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 12:59:15,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103829703] [2022-11-20 12:59:15,162 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 12:59:15,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [187009157] [2022-11-20 12:59:15,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [187009157] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 12:59:15,163 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 12:59:15,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2022-11-20 12:59:15,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218216566] [2022-11-20 12:59:15,163 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 12:59:15,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-11-20 12:59:15,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 12:59:15,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-11-20 12:59:15,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=1814, Unknown=20, NotChecked=174, Total=2162 [2022-11-20 12:59:15,165 INFO L87 Difference]: Start difference. First operand 505 states and 624 transitions. Second operand has 42 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 36 states have internal predecessors, (120), 18 states have call successors, (31), 9 states have call predecessors, (31), 13 states have return successors, (30), 17 states have call predecessors, (30), 17 states have call successors, (30) [2022-11-20 12:59:20,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 12:59:20,154 INFO L93 Difference]: Finished difference Result 856 states and 1085 transitions. [2022-11-20 12:59:20,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-11-20 12:59:20,155 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 36 states have internal predecessors, (120), 18 states have call successors, (31), 9 states have call predecessors, (31), 13 states have return successors, (30), 17 states have call predecessors, (30), 17 states have call successors, (30) Word has length 194 [2022-11-20 12:59:20,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 12:59:20,159 INFO L225 Difference]: With dead ends: 856 [2022-11-20 12:59:20,159 INFO L226 Difference]: Without dead ends: 568 [2022-11-20 12:59:20,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 198 SyntacticMatches, 21 SemanticMatches, 62 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1334 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=281, Invalid=3476, Unknown=33, NotChecked=242, Total=4032 [2022-11-20 12:59:20,161 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 248 mSDsluCounter, 2266 mSDsCounter, 0 mSdLazyCounter, 1864 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 2462 SdHoareTripleChecker+Invalid, 6230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 1864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4143 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-20 12:59:20,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 2462 Invalid, 6230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 1864 Invalid, 0 Unknown, 4143 Unchecked, 3.2s Time] [2022-11-20 12:59:20,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 568 states. [2022-11-20 12:59:20,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 568 to 558. [2022-11-20 12:59:20,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 382 states have (on average 1.1649214659685865) internal successors, (445), 386 states have internal predecessors, (445), 111 states have call successors, (111), 60 states have call predecessors, (111), 64 states have return successors, (126), 111 states have call predecessors, (126), 110 states have call successors, (126) [2022-11-20 12:59:20,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 682 transitions. [2022-11-20 12:59:20,241 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 682 transitions. Word has length 194 [2022-11-20 12:59:20,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 12:59:20,242 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 682 transitions. [2022-11-20 12:59:20,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 34 states have (on average 3.5294117647058822) internal successors, (120), 36 states have internal predecessors, (120), 18 states have call successors, (31), 9 states have call predecessors, (31), 13 states have return successors, (30), 17 states have call predecessors, (30), 17 states have call successors, (30) [2022-11-20 12:59:20,242 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 682 transitions. [2022-11-20 12:59:20,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-20 12:59:20,244 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 12:59:20,244 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 12:59:20,263 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-11-20 12:59:20,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:59:20,459 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 12:59:20,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 12:59:20,460 INFO L85 PathProgramCache]: Analyzing trace with hash -2041291476, now seen corresponding path program 1 times [2022-11-20 12:59:20,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 12:59:20,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203798284] [2022-11-20 12:59:20,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:59:20,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 12:59:20,524 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-20 12:59:20,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1716899881] [2022-11-20 12:59:20,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 12:59:20,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 12:59:20,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 12:59:20,526 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 12:59:20,528 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d1986350-d315-45a7-a3c1-9560436dada9/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-20 12:59:21,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 12:59:21,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 2751 conjuncts, 91 conjunts are in the unsatisfiable core [2022-11-20 12:59:21,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 12:59:21,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:59:21,682 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-11-20 12:59:21,687 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:59:21,688 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2022-11-20 12:59:23,911 WARN L859 $PredicateComparison]: unable to prove that (or (exists ((|v_aws_hash_table_is_valid_#in~map.offset_BEFORE_CALL_15| Int) (|v_aws_hash_table_is_valid_#in~map.base_BEFORE_CALL_15| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| |v_aws_hash_table_is_valid_#in~map.base_BEFORE_CALL_15|) |v_aws_hash_table_is_valid_#in~map.offset_BEFORE_CALL_15|) 0))) (exists ((|v_aws_hash_table_is_valid_#in~map.offset_BEFORE_CALL_15| Int) (|v_aws_hash_table_is_valid_#in~map.base_BEFORE_CALL_15| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_aws_hash_table_is_valid_#in~map.base_BEFORE_CALL_15|) |v_aws_hash_table_is_valid_#in~map.offset_BEFORE_CALL_15|) 0)))) is different from true [2022-11-20 12:59:26,064 WARN L859 $PredicateComparison]: unable to prove that (or (exists ((|v_s_get_next_element_#in~iter.offset_BEFORE_CALL_3| Int) (|v_s_get_next_element_#in~iter.base_BEFORE_CALL_3| Int)) (not (= (select (select |c_#memory_$Pointer$.offset| (select (select |c_#memory_$Pointer$.base| |v_s_get_next_element_#in~iter.base_BEFORE_CALL_3|) |v_s_get_next_element_#in~iter.offset_BEFORE_CALL_3|)) (select (select |c_#memory_$Pointer$.offset| |v_s_get_next_element_#in~iter.base_BEFORE_CALL_3|) |v_s_get_next_element_#in~iter.offset_BEFORE_CALL_3|)) 0))) (exists ((|v_s_get_next_element_#in~iter.offset_BEFORE_CALL_3| Int) (|v_s_get_next_element_#in~iter.base_BEFORE_CALL_3| Int)) (not (= (select (select |c_#memory_$Pointer$.base| (select (select |c_#memory_$Pointer$.base| |v_s_get_next_element_#in~iter.base_BEFORE_CALL_3|) |v_s_get_next_element_#in~iter.offset_BEFORE_CALL_3|)) (select (select |c_#memory_$Pointer$.offset| |v_s_get_next_element_#in~iter.base_BEFORE_CALL_3|) |v_s_get_next_element_#in~iter.offset_BEFORE_CALL_3|)) 0)))) is different from true [2022-11-20 12:59:26,228 WARN L859 $PredicateComparison]: unable to prove that (let ((.cse1 (+ 8 |c_s_get_next_element_#in~iter.offset|)) (.cse2 (+ 16 |c_s_get_next_element_#in~iter.offset|)) (.cse3 (+ |c_s_get_next_element_#in~iter.offset| 24)) (.cse4 (+ 40 |c_s_get_next_element_#in~iter.offset|)) (.cse5 (select |c_old(#memory_$Pointer$.offset)| |c_s_get_next_element_#in~iter.base|)) (.cse0 (select |c_old(#memory_$Pointer$.base)| |c_s_get_next_element_#in~iter.base|))) (and (exists ((v_ArrVal_6249 Int) (v_ArrVal_6247 Int) (v_ArrVal_6245 Int) (v_ArrVal_6242 Int)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_s_get_next_element_#in~iter.base| (store (store (store (store .cse0 .cse1 v_ArrVal_6249) .cse2 v_ArrVal_6247) .cse3 v_ArrVal_6245) .cse4 v_ArrVal_6242)))) (exists ((v_ArrVal_6248 Int) (v_ArrVal_6246 Int) (v_ArrVal_6244 Int) (v_ArrVal_6243 Int)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_s_get_next_element_#in~iter.base| (store (store (store (store .cse5 .cse1 v_ArrVal_6248) .cse2 v_ArrVal_6246) .cse3 v_ArrVal_6244) .cse4 v_ArrVal_6243)))) (let ((.cse6 (select .cse0 |c_s_get_next_element_#in~iter.offset|)) (.cse7 (select .cse5 |c_s_get_next_element_#in~iter.offset|))) (or (not (= (select (select |c_old(#memory_$Pointer$.base)| .cse6) .cse7) 0)) (not (= (select (select |c_old(#memory_$Pointer$.offset)| .cse6) .cse7) 0)))))) is different from true [2022-11-20 12:59:26,301 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:59:26,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:59:26,303 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:59:26,304 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:59:26,340 INFO L321 Elim1Store]: treesize reduction 252, result has 4.2 percent of original size [2022-11-20 12:59:26,341 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 69 treesize of output 78 [2022-11-20 12:59:26,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:59:26,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:59:26,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:59:26,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-20 12:59:26,352 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-20 12:59:26,353 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 69 treesize of output 78 [2022-11-20 12:59:27,405 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 83 proven. 3 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-11-20 12:59:27,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 12:59:37,871 WARN L233 SmtUtils]: Spent 10.04s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 12:59:51,076 WARN L233 SmtUtils]: Spent 10.05s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 13:00:03,292 WARN L233 SmtUtils]: Spent 10.05s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 13:00:11,759 WARN L233 SmtUtils]: Spent 8.38s on a formula simplification that was a NOOP. DAG size: 38 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 13:00:12,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 13:00:12,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203798284] [2022-11-20 13:00:12,659 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-20 13:00:12,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1716899881] [2022-11-20 13:00:12,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1716899881] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 13:00:12,659 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-11-20 13:00:12,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2022-11-20 13:00:12,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102128596] [2022-11-20 13:00:12,660 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-11-20 13:00:12,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-11-20 13:00:12,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 13:00:12,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-11-20 13:00:12,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=953, Unknown=5, NotChecked=192, Total=1260 [2022-11-20 13:00:12,662 INFO L87 Difference]: Start difference. First operand 558 states and 682 transitions. Second operand has 27 states, 23 states have (on average 4.043478260869565) internal successors, (93), 24 states have internal predecessors, (93), 13 states have call successors, (28), 6 states have call predecessors, (28), 7 states have return successors, (27), 11 states have call predecessors, (27), 12 states have call successors, (27) [2022-11-20 13:00:46,927 WARN L233 SmtUtils]: Spent 9.07s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)