./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7e70badd Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/config/AutomizerReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G --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 66d360c8c29bda7e5219dac4b14837aec8d465009822b05f671b68702d836670 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-7e70bad [2021-11-23 13:43:20,602 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 13:43:20,605 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 13:43:20,660 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 13:43:20,661 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 13:43:20,666 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 13:43:20,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 13:43:20,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 13:43:20,675 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 13:43:20,680 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 13:43:20,682 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 13:43:20,684 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 13:43:20,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 13:43:20,687 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 13:43:20,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 13:43:20,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 13:43:20,699 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 13:43:20,700 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 13:43:20,703 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 13:43:20,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 13:43:20,712 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 13:43:20,714 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 13:43:20,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 13:43:20,718 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 13:43:20,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 13:43:20,728 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 13:43:20,729 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 13:43:20,731 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 13:43:20,731 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 13:43:20,733 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 13:43:20,733 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 13:43:20,734 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 13:43:20,736 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 13:43:20,738 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 13:43:20,739 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 13:43:20,740 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 13:43:20,740 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 13:43:20,741 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 13:43:20,741 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 13:43:20,742 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 13:43:20,743 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 13:43:20,743 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-23 13:43:20,785 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 13:43:20,785 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 13:43:20,786 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 13:43:20,786 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 13:43:20,787 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-23 13:43:20,788 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-23 13:43:20,788 INFO L138 SettingsManager]: * Use SBE=true [2021-11-23 13:43:20,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 13:43:20,788 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 13:43:20,789 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 13:43:20,790 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 13:43:20,790 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 13:43:20,790 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 13:43:20,790 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 13:43:20,791 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 13:43:20,791 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 13:43:20,791 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 13:43:20,791 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-23 13:43:20,792 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 13:43:20,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:43:20,792 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 13:43:20,792 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 13:43:20,793 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 13:43:20,793 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-23 13:43:20,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 13:43:20,793 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-23 13:43:20,793 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-23 13:43:20,794 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 13:43:20,794 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 13:43:20,795 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_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 66d360c8c29bda7e5219dac4b14837aec8d465009822b05f671b68702d836670 [2021-11-23 13:43:21,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 13:43:21,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 13:43:21,106 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 13:43:21,108 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 13:43:21,109 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 13:43:21,110 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/../../sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i [2021-11-23 13:43:21,193 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/data/2ba377bfb/c3646608616b4c648c9b3cde6948a906/FLAGf6931731c [2021-11-23 13:43:22,092 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 13:43:22,096 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i [2021-11-23 13:43:22,149 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/data/2ba377bfb/c3646608616b4c648c9b3cde6948a906/FLAGf6931731c [2021-11-23 13:43:22,555 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/data/2ba377bfb/c3646608616b4c648c9b3cde6948a906 [2021-11-23 13:43:22,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 13:43:22,558 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 13:43:22,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 13:43:22,572 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 13:43:22,575 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 13:43:22,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:43:22" (1/1) ... [2021-11-23 13:43:22,577 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@706a630f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:22, skipping insertion in model container [2021-11-23 13:43:22,577 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:43:22" (1/1) ... [2021-11-23 13:43:22,584 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 13:43:22,707 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 13:43:23,052 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i[4491,4504] [2021-11-23 13:43:23,061 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i[4551,4564] [2021-11-23 13:43:24,391 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:24,396 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:24,398 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:24,400 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:24,401 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:24,414 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:24,414 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:24,416 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:24,417 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:24,419 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:24,420 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:24,421 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:24,421 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:24,979 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 13:43:24,980 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 13:43:24,982 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 13:43:24,983 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 13:43:24,985 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 13:43:24,986 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 13:43:24,987 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 13:43:24,987 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 13:43:24,988 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 13:43:24,989 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 13:43:25,245 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 13:43:25,600 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:25,601 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:25,623 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:25,624 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:25,630 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:25,631 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:25,646 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:25,658 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:25,658 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:25,659 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:25,659 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:25,660 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:25,660 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:25,741 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:43:25,820 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 13:43:25,833 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i[4491,4504] [2021-11-23 13:43:25,852 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/sv-benchmarks/c/aws-c-common/aws_hash_table_eq_harness.i[4551,4564] [2021-11-23 13:43:25,913 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:25,914 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:25,914 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:25,914 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:25,915 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:25,924 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:25,925 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:25,927 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:25,927 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:25,930 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:25,931 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:25,931 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:25,932 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:25,968 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-23 13:43:25,970 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-23 13:43:25,971 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-23 13:43:25,972 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-23 13:43:25,973 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-23 13:43:25,973 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-23 13:43:25,974 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-23 13:43:25,974 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-23 13:43:25,975 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-23 13:43:25,975 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-23 13:43:26,001 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-23 13:43:26,147 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:26,148 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:26,160 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:26,160 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:26,164 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:26,164 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:26,180 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:26,181 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:26,182 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:26,182 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:26,182 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:26,183 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:26,183 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-23 13:43:26,210 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 13:43:26,585 INFO L208 MainTranslator]: Completed translation [2021-11-23 13:43:26,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:26 WrapperNode [2021-11-23 13:43:26,586 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 13:43:26,587 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 13:43:26,587 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 13:43:26,587 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 13:43:26,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:26" (1/1) ... [2021-11-23 13:43:26,730 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:26" (1/1) ... [2021-11-23 13:43:26,967 INFO L137 Inliner]: procedures = 774, calls = 2455, calls flagged for inlining = 760, calls inlined = 228, statements flattened = 3284 [2021-11-23 13:43:26,967 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 13:43:26,969 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 13:43:26,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 13:43:26,970 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 13:43:26,978 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:26" (1/1) ... [2021-11-23 13:43:26,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:26" (1/1) ... [2021-11-23 13:43:27,006 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:26" (1/1) ... [2021-11-23 13:43:27,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:26" (1/1) ... [2021-11-23 13:43:27,091 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:26" (1/1) ... [2021-11-23 13:43:27,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:26" (1/1) ... [2021-11-23 13:43:27,126 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:26" (1/1) ... [2021-11-23 13:43:27,154 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 13:43:27,155 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 13:43:27,155 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 13:43:27,156 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 13:43:27,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:26" (1/1) ... [2021-11-23 13:43:27,164 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 13:43:27,175 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:43:27,187 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 13:43:27,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 13:43:27,233 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-23 13:43:27,234 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 13:43:27,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 13:43:27,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 13:43:27,234 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 13:43:27,234 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 13:43:27,235 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 13:43:27,235 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 13:43:27,235 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 13:43:27,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 13:43:27,235 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 13:43:27,235 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 13:43:27,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 13:43:27,662 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 13:43:27,664 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 13:43:29,948 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##423: assume !true; [2021-11-23 13:43:29,949 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##287: assume !true; [2021-11-23 13:43:29,949 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##234: assume !true; [2021-11-23 13:43:29,949 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##313: assume !true; [2021-11-23 13:43:29,949 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##190: assume !true; [2021-11-23 13:43:29,949 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##150: assume !true; [2021-11-23 13:43:29,950 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##396: assume !true; [2021-11-23 13:43:29,950 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##342: assume !true; [2021-11-23 13:43:29,950 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 13:43:29,969 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 13:43:29,969 INFO L301 CfgBuilder]: Removed 18 assume(true) statements. [2021-11-23 13:43:29,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:43:29 BoogieIcfgContainer [2021-11-23 13:43:29,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 13:43:29,975 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 13:43:29,975 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 13:43:29,978 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 13:43:29,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:43:22" (1/3) ... [2021-11-23 13:43:29,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b3a72b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:43:29, skipping insertion in model container [2021-11-23 13:43:29,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:43:26" (2/3) ... [2021-11-23 13:43:29,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b3a72b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:43:29, skipping insertion in model container [2021-11-23 13:43:29,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:43:29" (3/3) ... [2021-11-23 13:43:29,981 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_eq_harness.i [2021-11-23 13:43:29,990 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 13:43:29,990 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2021-11-23 13:43:30,057 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 13:43:30,074 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 13:43:30,077 INFO L340 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2021-11-23 13:43:30,114 INFO L276 IsEmpty]: Start isEmpty. Operand has 514 states, 488 states have (on average 1.4200819672131149) internal successors, (693), 513 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:30,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-23 13:43:30,138 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:30,141 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:43:30,142 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-23 13:43:30,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:30,148 INFO L85 PathProgramCache]: Analyzing trace with hash 472998027, now seen corresponding path program 1 times [2021-11-23 13:43:30,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:30,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84166669] [2021-11-23 13:43:30,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:30,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:30,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:30,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:43:30,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:30,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84166669] [2021-11-23 13:43:30,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84166669] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:30,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:30,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-23 13:43:30,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121681185] [2021-11-23 13:43:30,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:30,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-23 13:43:30,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:30,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-23 13:43:30,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 13:43:30,894 INFO L87 Difference]: Start difference. First operand has 514 states, 488 states have (on average 1.4200819672131149) internal successors, (693), 513 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 58.5) internal successors, (117), 2 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:30,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:30,984 INFO L93 Difference]: Finished difference Result 1023 states and 1380 transitions. [2021-11-23 13:43:30,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-23 13:43:30,987 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 58.5) internal successors, (117), 2 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2021-11-23 13:43:30,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:31,008 INFO L225 Difference]: With dead ends: 1023 [2021-11-23 13:43:31,008 INFO L226 Difference]: Without dead ends: 507 [2021-11-23 13:43:31,014 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-23 13:43:31,018 INFO L933 BasicCegarLoop]: 623 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, 623 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 [2021-11-23 13:43:31,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 623 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-23 13:43:31,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 507 states. [2021-11-23 13:43:31,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 507 to 507. [2021-11-23 13:43:31,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 482 states have (on average 1.2800829875518671) internal successors, (617), 506 states have internal predecessors, (617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:31,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 617 transitions. [2021-11-23 13:43:31,091 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 617 transitions. Word has length 117 [2021-11-23 13:43:31,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:43:31,091 INFO L470 AbstractCegarLoop]: Abstraction has 507 states and 617 transitions. [2021-11-23 13:43:31,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 58.5) internal successors, (117), 2 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:31,092 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 617 transitions. [2021-11-23 13:43:31,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-23 13:43:31,095 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:31,095 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:43:31,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 13:43:31,096 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-23 13:43:31,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:31,097 INFO L85 PathProgramCache]: Analyzing trace with hash 550783055, now seen corresponding path program 1 times [2021-11-23 13:43:31,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:31,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556088794] [2021-11-23 13:43:31,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:31,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:31,188 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:43:31,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1895063095] [2021-11-23 13:43:31,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:31,189 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:43:31,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:43:31,196 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:43:31,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 13:43:31,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:31,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 2613 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 13:43:31,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:43:32,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:43:32,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:43:32,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:32,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556088794] [2021-11-23 13:43:32,161 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:43:32,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895063095] [2021-11-23 13:43:32,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895063095] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:32,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:32,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:43:32,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166485233] [2021-11-23 13:43:32,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:32,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:43:32,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:32,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:43:32,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:43:32,167 INFO L87 Difference]: Start difference. First operand 507 states and 617 transitions. Second operand has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:32,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:32,402 INFO L93 Difference]: Finished difference Result 1475 states and 1797 transitions. [2021-11-23 13:43:32,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:43:32,402 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 117 [2021-11-23 13:43:32,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:32,411 INFO L225 Difference]: With dead ends: 1475 [2021-11-23 13:43:32,411 INFO L226 Difference]: Without dead ends: 990 [2021-11-23 13:43:32,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:43:32,419 INFO L933 BasicCegarLoop]: 1142 mSDtfsCounter, 1152 mSDsluCounter, 2337 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1152 SdHoareTripleChecker+Valid, 3479 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:43:32,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1152 Valid, 3479 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:43:32,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 990 states. [2021-11-23 13:43:32,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 990 to 519. [2021-11-23 13:43:32,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 494 states have (on average 1.2732793522267207) internal successors, (629), 518 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:32,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 629 transitions. [2021-11-23 13:43:32,471 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 629 transitions. Word has length 117 [2021-11-23 13:43:32,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:43:32,471 INFO L470 AbstractCegarLoop]: Abstraction has 519 states and 629 transitions. [2021-11-23 13:43:32,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 23.4) internal successors, (117), 5 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:32,472 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 629 transitions. [2021-11-23 13:43:32,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-23 13:43:32,486 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:32,486 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:43:32,529 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 13:43:32,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:43:32,687 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-23 13:43:32,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:32,687 INFO L85 PathProgramCache]: Analyzing trace with hash -550582129, now seen corresponding path program 1 times [2021-11-23 13:43:32,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:32,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739435322] [2021-11-23 13:43:32,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:32,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:32,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:33,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:43:33,041 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:33,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739435322] [2021-11-23 13:43:33,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739435322] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:33,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:33,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 13:43:33,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884589963] [2021-11-23 13:43:33,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:33,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:43:33,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:33,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:43:33,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:43:33,046 INFO L87 Difference]: Start difference. First operand 519 states and 629 transitions. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:33,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:33,746 INFO L93 Difference]: Finished difference Result 1046 states and 1268 transitions. [2021-11-23 13:43:33,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-23 13:43:33,747 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-23 13:43:33,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:33,750 INFO L225 Difference]: With dead ends: 1046 [2021-11-23 13:43:33,751 INFO L226 Difference]: Without dead ends: 565 [2021-11-23 13:43:33,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2021-11-23 13:43:33,753 INFO L933 BasicCegarLoop]: 629 mSDtfsCounter, 265 mSDsluCounter, 3120 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 3749 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-23 13:43:33,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [265 Valid, 3749 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-23 13:43:33,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2021-11-23 13:43:33,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 521. [2021-11-23 13:43:33,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 496 states have (on average 1.2721774193548387) internal successors, (631), 520 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:33,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 631 transitions. [2021-11-23 13:43:33,772 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 631 transitions. Word has length 125 [2021-11-23 13:43:33,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:43:33,773 INFO L470 AbstractCegarLoop]: Abstraction has 521 states and 631 transitions. [2021-11-23 13:43:33,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 8 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:33,773 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 631 transitions. [2021-11-23 13:43:33,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-23 13:43:33,775 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:33,775 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:43:33,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 13:43:33,776 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-23 13:43:33,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:33,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1710991121, now seen corresponding path program 1 times [2021-11-23 13:43:33,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:33,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1207593211] [2021-11-23 13:43:33,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:33,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:33,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:34,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:43:34,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:34,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1207593211] [2021-11-23 13:43:34,085 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1207593211] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:34,085 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:34,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:43:34,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493038156] [2021-11-23 13:43:34,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:34,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:43:34,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:34,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:43:34,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:43:34,088 INFO L87 Difference]: Start difference. First operand 521 states and 631 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:34,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:34,239 INFO L93 Difference]: Finished difference Result 1005 states and 1219 transitions. [2021-11-23 13:43:34,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:43:34,240 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-23 13:43:34,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:34,243 INFO L225 Difference]: With dead ends: 1005 [2021-11-23 13:43:34,243 INFO L226 Difference]: Without dead ends: 519 [2021-11-23 13:43:34,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:43:34,245 INFO L933 BasicCegarLoop]: 602 mSDtfsCounter, 584 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 1126 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:43:34,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [584 Valid, 1126 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:43:34,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2021-11-23 13:43:34,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 519. [2021-11-23 13:43:34,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 494 states have (on average 1.263157894736842) internal successors, (624), 518 states have internal predecessors, (624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:34,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 624 transitions. [2021-11-23 13:43:34,266 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 624 transitions. Word has length 125 [2021-11-23 13:43:34,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:43:34,266 INFO L470 AbstractCegarLoop]: Abstraction has 519 states and 624 transitions. [2021-11-23 13:43:34,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:34,267 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 624 transitions. [2021-11-23 13:43:34,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2021-11-23 13:43:34,268 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:34,269 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:43:34,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 13:43:34,269 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-23 13:43:34,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:34,270 INFO L85 PathProgramCache]: Analyzing trace with hash -595987094, now seen corresponding path program 1 times [2021-11-23 13:43:34,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:34,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777080151] [2021-11-23 13:43:34,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:34,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:34,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:34,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:43:34,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:34,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777080151] [2021-11-23 13:43:34,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777080151] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:34,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:34,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:43:34,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458215439] [2021-11-23 13:43:34,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:34,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:43:34,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:34,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:43:34,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:43:34,474 INFO L87 Difference]: Start difference. First operand 519 states and 624 transitions. Second operand has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:35,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:35,473 INFO L93 Difference]: Finished difference Result 1294 states and 1549 transitions. [2021-11-23 13:43:35,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 13:43:35,474 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 127 [2021-11-23 13:43:35,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:35,478 INFO L225 Difference]: With dead ends: 1294 [2021-11-23 13:43:35,478 INFO L226 Difference]: Without dead ends: 812 [2021-11-23 13:43:35,479 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:43:35,482 INFO L933 BasicCegarLoop]: 721 mSDtfsCounter, 705 mSDsluCounter, 1490 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 2211 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-23 13:43:35,483 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [705 Valid, 2211 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-23 13:43:35,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2021-11-23 13:43:35,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 519. [2021-11-23 13:43:35,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 494 states have (on average 1.2267206477732793) internal successors, (606), 518 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:35,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 606 transitions. [2021-11-23 13:43:35,511 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 606 transitions. Word has length 127 [2021-11-23 13:43:35,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:43:35,511 INFO L470 AbstractCegarLoop]: Abstraction has 519 states and 606 transitions. [2021-11-23 13:43:35,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.4) internal successors, (127), 5 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:35,512 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 606 transitions. [2021-11-23 13:43:35,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-23 13:43:35,513 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:35,514 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:43:35,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 13:43:35,514 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-23 13:43:35,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:35,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1912536357, now seen corresponding path program 1 times [2021-11-23 13:43:35,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:35,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965910445] [2021-11-23 13:43:35,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:35,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:35,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:35,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:43:35,883 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:35,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965910445] [2021-11-23 13:43:35,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965910445] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:35,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:35,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-23 13:43:35,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434556210] [2021-11-23 13:43:35,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:35,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 13:43:35,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:35,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 13:43:35,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:43:35,886 INFO L87 Difference]: Start difference. First operand 519 states and 606 transitions. Second operand has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:36,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:36,815 INFO L93 Difference]: Finished difference Result 1245 states and 1457 transitions. [2021-11-23 13:43:36,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 13:43:36,815 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-11-23 13:43:36,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:36,821 INFO L225 Difference]: With dead ends: 1245 [2021-11-23 13:43:36,821 INFO L226 Difference]: Without dead ends: 830 [2021-11-23 13:43:36,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-11-23 13:43:36,825 INFO L933 BasicCegarLoop]: 540 mSDtfsCounter, 1378 mSDsluCounter, 1999 mSDsCounter, 0 mSdLazyCounter, 565 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1378 SdHoareTripleChecker+Valid, 2539 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-23 13:43:36,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1378 Valid, 2539 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 565 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-23 13:43:36,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2021-11-23 13:43:36,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 642. [2021-11-23 13:43:36,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 617 states have (on average 1.2252836304700163) internal successors, (756), 641 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:36,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 756 transitions. [2021-11-23 13:43:36,876 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 756 transitions. Word has length 128 [2021-11-23 13:43:36,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:43:36,877 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 756 transitions. [2021-11-23 13:43:36,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.0) internal successors, (128), 8 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:36,877 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 756 transitions. [2021-11-23 13:43:36,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-23 13:43:36,879 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:36,880 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:43:36,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 13:43:36,880 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-23 13:43:36,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:36,882 INFO L85 PathProgramCache]: Analyzing trace with hash 1570667547, now seen corresponding path program 1 times [2021-11-23 13:43:36,882 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:36,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326418025] [2021-11-23 13:43:36,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:36,883 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:37,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:37,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:43:37,160 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:37,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326418025] [2021-11-23 13:43:37,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326418025] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:37,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:37,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:43:37,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123382884] [2021-11-23 13:43:37,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:37,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:43:37,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:37,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:43:37,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:43:37,163 INFO L87 Difference]: Start difference. First operand 642 states and 756 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:37,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:37,330 INFO L93 Difference]: Finished difference Result 1179 states and 1391 transitions. [2021-11-23 13:43:37,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:43:37,331 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 128 [2021-11-23 13:43:37,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:37,336 INFO L225 Difference]: With dead ends: 1179 [2021-11-23 13:43:37,336 INFO L226 Difference]: Without dead ends: 638 [2021-11-23 13:43:37,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:43:37,339 INFO L933 BasicCegarLoop]: 581 mSDtfsCounter, 497 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 1155 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:43:37,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [497 Valid, 1155 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:43:37,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2021-11-23 13:43:37,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 638. [2021-11-23 13:43:37,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 638 states, 613 states have (on average 1.2153344208809136) internal successors, (745), 637 states have internal predecessors, (745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:37,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 638 states to 638 states and 745 transitions. [2021-11-23 13:43:37,386 INFO L78 Accepts]: Start accepts. Automaton has 638 states and 745 transitions. Word has length 128 [2021-11-23 13:43:37,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:43:37,386 INFO L470 AbstractCegarLoop]: Abstraction has 638 states and 745 transitions. [2021-11-23 13:43:37,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 4 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:37,387 INFO L276 IsEmpty]: Start isEmpty. Operand 638 states and 745 transitions. [2021-11-23 13:43:37,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-23 13:43:37,389 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:37,389 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:43:37,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 13:43:37,390 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-23 13:43:37,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:37,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1723642064, now seen corresponding path program 1 times [2021-11-23 13:43:37,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:37,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515185052] [2021-11-23 13:43:37,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:37,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:37,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:37,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:43:37,925 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:37,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515185052] [2021-11-23 13:43:37,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515185052] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:37,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:37,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-23 13:43:37,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442056528] [2021-11-23 13:43:37,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:37,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-23 13:43:37,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:37,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-23 13:43:37,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-23 13:43:37,928 INFO L87 Difference]: Start difference. First operand 638 states and 745 transitions. Second operand has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:41,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:41,226 INFO L93 Difference]: Finished difference Result 2276 states and 2658 transitions. [2021-11-23 13:43:41,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-23 13:43:41,227 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-11-23 13:43:41,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:41,238 INFO L225 Difference]: With dead ends: 2276 [2021-11-23 13:43:41,238 INFO L226 Difference]: Without dead ends: 1857 [2021-11-23 13:43:41,240 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=315, Invalid=875, Unknown=0, NotChecked=0, Total=1190 [2021-11-23 13:43:41,240 INFO L933 BasicCegarLoop]: 822 mSDtfsCounter, 3927 mSDsluCounter, 4692 mSDsCounter, 0 mSdLazyCounter, 1914 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3927 SdHoareTripleChecker+Valid, 5514 SdHoareTripleChecker+Invalid, 2152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 1914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:43:41,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3927 Valid, 5514 Invalid, 2152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 1914 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2021-11-23 13:43:41,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1857 states. [2021-11-23 13:43:41,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1857 to 786. [2021-11-23 13:43:41,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 786 states, 761 states have (on average 1.2325886990801578) internal successors, (938), 785 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:41,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 938 transitions. [2021-11-23 13:43:41,310 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 938 transitions. Word has length 134 [2021-11-23 13:43:41,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:43:41,312 INFO L470 AbstractCegarLoop]: Abstraction has 786 states and 938 transitions. [2021-11-23 13:43:41,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.4) internal successors, (134), 10 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:41,312 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 938 transitions. [2021-11-23 13:43:41,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-23 13:43:41,314 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:41,314 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:43:41,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 13:43:41,316 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-23 13:43:41,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:41,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1504787346, now seen corresponding path program 1 times [2021-11-23 13:43:41,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:41,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285558339] [2021-11-23 13:43:41,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:41,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:41,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:41,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:43:41,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:41,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285558339] [2021-11-23 13:43:41,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285558339] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:41,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:41,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:43:41,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908109145] [2021-11-23 13:43:41,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:41,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:43:41,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:41,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:43:41,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:43:41,690 INFO L87 Difference]: Start difference. First operand 786 states and 938 transitions. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:41,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:41,892 INFO L93 Difference]: Finished difference Result 1330 states and 1596 transitions. [2021-11-23 13:43:41,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:43:41,893 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-11-23 13:43:41,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:41,898 INFO L225 Difference]: With dead ends: 1330 [2021-11-23 13:43:41,898 INFO L226 Difference]: Without dead ends: 757 [2021-11-23 13:43:41,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 13:43:41,902 INFO L933 BasicCegarLoop]: 562 mSDtfsCounter, 856 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:43:41,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [856 Valid, 1291 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:43:41,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2021-11-23 13:43:41,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 757. [2021-11-23 13:43:41,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 732 states have (on average 1.210382513661202) internal successors, (886), 756 states have internal predecessors, (886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:41,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 886 transitions. [2021-11-23 13:43:41,963 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 886 transitions. Word has length 134 [2021-11-23 13:43:41,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:43:41,963 INFO L470 AbstractCegarLoop]: Abstraction has 757 states and 886 transitions. [2021-11-23 13:43:41,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:41,964 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 886 transitions. [2021-11-23 13:43:41,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-23 13:43:41,966 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:41,966 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:43:41,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 13:43:41,966 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-23 13:43:41,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:41,967 INFO L85 PathProgramCache]: Analyzing trace with hash 217886608, now seen corresponding path program 1 times [2021-11-23 13:43:41,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:41,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434560235] [2021-11-23 13:43:41,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:41,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:42,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:43,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:43:43,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:43,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434560235] [2021-11-23 13:43:43,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434560235] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:43,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:43,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-11-23 13:43:43,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799475109] [2021-11-23 13:43:43,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:43,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-23 13:43:43,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:43,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-23 13:43:43,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2021-11-23 13:43:43,208 INFO L87 Difference]: Start difference. First operand 757 states and 886 transitions. Second operand has 17 states, 17 states have (on average 7.882352941176471) internal successors, (134), 17 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:49,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:49,062 INFO L93 Difference]: Finished difference Result 1854 states and 2126 transitions. [2021-11-23 13:43:49,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-11-23 13:43:49,063 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 7.882352941176471) internal successors, (134), 17 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-11-23 13:43:49,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:49,070 INFO L225 Difference]: With dead ends: 1854 [2021-11-23 13:43:49,070 INFO L226 Difference]: Without dead ends: 1336 [2021-11-23 13:43:49,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=358, Invalid=1898, Unknown=0, NotChecked=0, Total=2256 [2021-11-23 13:43:49,074 INFO L933 BasicCegarLoop]: 956 mSDtfsCounter, 1134 mSDsluCounter, 11540 mSDsCounter, 0 mSdLazyCounter, 4107 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1134 SdHoareTripleChecker+Valid, 12496 SdHoareTripleChecker+Invalid, 4234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 4107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:43:49,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1134 Valid, 12496 Invalid, 4234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 4107 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-11-23 13:43:49,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1336 states. [2021-11-23 13:43:49,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1336 to 760. [2021-11-23 13:43:49,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 735 states have (on average 1.2095238095238094) internal successors, (889), 759 states have internal predecessors, (889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:49,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 889 transitions. [2021-11-23 13:43:49,152 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 889 transitions. Word has length 134 [2021-11-23 13:43:49,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:43:49,152 INFO L470 AbstractCegarLoop]: Abstraction has 760 states and 889 transitions. [2021-11-23 13:43:49,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.882352941176471) internal successors, (134), 17 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:49,153 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 889 transitions. [2021-11-23 13:43:49,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-23 13:43:49,155 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:49,155 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:43:49,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 13:43:49,156 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-23 13:43:49,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:49,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1780835856, now seen corresponding path program 1 times [2021-11-23 13:43:49,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:49,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354913280] [2021-11-23 13:43:49,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:49,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:49,291 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:43:49,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1845701002] [2021-11-23 13:43:49,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:49,292 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:43:49,292 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:43:49,296 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:43:49,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 13:43:49,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:49,909 INFO L263 TraceCheckSpWp]: Trace formula consists of 2800 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 13:43:49,920 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:43:50,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:43:50,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:43:50,197 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:50,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354913280] [2021-11-23 13:43:50,197 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:43:50,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845701002] [2021-11-23 13:43:50,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845701002] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:50,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:50,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:43:50,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677830607] [2021-11-23 13:43:50,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:50,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:43:50,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:50,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:43:50,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:43:50,200 INFO L87 Difference]: Start difference. First operand 760 states and 889 transitions. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:50,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:50,433 INFO L93 Difference]: Finished difference Result 2214 states and 2589 transitions. [2021-11-23 13:43:50,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:43:50,434 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-11-23 13:43:50,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:50,442 INFO L225 Difference]: With dead ends: 2214 [2021-11-23 13:43:50,442 INFO L226 Difference]: Without dead ends: 1479 [2021-11-23 13:43:50,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:43:50,445 INFO L933 BasicCegarLoop]: 697 mSDtfsCounter, 1068 mSDsluCounter, 1826 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1068 SdHoareTripleChecker+Valid, 2523 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:43:50,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1068 Valid, 2523 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:43:50,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1479 states. [2021-11-23 13:43:50,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1479 to 772. [2021-11-23 13:43:50,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 772 states, 747 states have (on average 1.2061579651941097) internal successors, (901), 771 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:50,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 901 transitions. [2021-11-23 13:43:50,514 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 901 transitions. Word has length 134 [2021-11-23 13:43:50,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:43:50,515 INFO L470 AbstractCegarLoop]: Abstraction has 772 states and 901 transitions. [2021-11-23 13:43:50,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:50,515 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 901 transitions. [2021-11-23 13:43:50,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-23 13:43:50,517 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:50,517 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:43:50,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 13:43:50,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-23 13:43:50,731 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-23 13:43:50,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:50,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1299755598, now seen corresponding path program 1 times [2021-11-23 13:43:50,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:50,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839000251] [2021-11-23 13:43:50,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:50,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:50,816 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:43:50,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [584365058] [2021-11-23 13:43:50,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:50,817 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:43:50,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:43:50,818 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:43:50,837 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 13:43:51,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:51,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 2801 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-23 13:43:51,532 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:43:51,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:43:51,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:43:51,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:51,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839000251] [2021-11-23 13:43:51,767 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:43:51,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584365058] [2021-11-23 13:43:51,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584365058] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:51,768 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:51,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 13:43:51,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409516495] [2021-11-23 13:43:51,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:51,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 13:43:51,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:51,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 13:43:51,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:43:51,770 INFO L87 Difference]: Start difference. First operand 772 states and 901 transitions. Second operand has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:52,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:52,163 INFO L93 Difference]: Finished difference Result 1463 states and 1706 transitions. [2021-11-23 13:43:52,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 13:43:52,164 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 134 [2021-11-23 13:43:52,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:52,169 INFO L225 Difference]: With dead ends: 1463 [2021-11-23 13:43:52,169 INFO L226 Difference]: Without dead ends: 856 [2021-11-23 13:43:52,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:43:52,171 INFO L933 BasicCegarLoop]: 580 mSDtfsCounter, 109 mSDsluCounter, 1528 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 2108 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-23 13:43:52,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 2108 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 284 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-23 13:43:52,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2021-11-23 13:43:52,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 678. [2021-11-23 13:43:52,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 678 states, 653 states have (on average 1.206738131699847) internal successors, (788), 677 states have internal predecessors, (788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:52,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 788 transitions. [2021-11-23 13:43:52,228 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 788 transitions. Word has length 134 [2021-11-23 13:43:52,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:43:52,228 INFO L470 AbstractCegarLoop]: Abstraction has 678 states and 788 transitions. [2021-11-23 13:43:52,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.8) internal successors, (134), 5 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:52,229 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 788 transitions. [2021-11-23 13:43:52,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-23 13:43:52,231 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:52,231 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:43:52,273 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 13:43:52,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-11-23 13:43:52,455 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-23 13:43:52,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:52,456 INFO L85 PathProgramCache]: Analyzing trace with hash -2015297100, now seen corresponding path program 1 times [2021-11-23 13:43:52,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:52,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292741545] [2021-11-23 13:43:52,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:52,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:52,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:52,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:43:52,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:52,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292741545] [2021-11-23 13:43:52,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292741545] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:52,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:52,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 13:43:52,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567022614] [2021-11-23 13:43:52,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:52,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 13:43:52,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:52,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 13:43:52,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-23 13:43:52,963 INFO L87 Difference]: Start difference. First operand 678 states and 788 transitions. Second operand has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 9 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:54,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:54,451 INFO L93 Difference]: Finished difference Result 1115 states and 1267 transitions. [2021-11-23 13:43:54,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-23 13:43:54,453 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 9 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2021-11-23 13:43:54,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:54,458 INFO L225 Difference]: With dead ends: 1115 [2021-11-23 13:43:54,459 INFO L226 Difference]: Without dead ends: 1012 [2021-11-23 13:43:54,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2021-11-23 13:43:54,461 INFO L933 BasicCegarLoop]: 608 mSDtfsCounter, 1053 mSDsluCounter, 3201 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1053 SdHoareTripleChecker+Valid, 3809 SdHoareTripleChecker+Invalid, 1169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:43:54,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1053 Valid, 3809 Invalid, 1169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1077 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-23 13:43:54,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2021-11-23 13:43:54,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 688. [2021-11-23 13:43:54,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 663 states have (on average 1.2036199095022624) internal successors, (798), 687 states have internal predecessors, (798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:54,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 798 transitions. [2021-11-23 13:43:54,526 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 798 transitions. Word has length 143 [2021-11-23 13:43:54,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:43:54,527 INFO L470 AbstractCegarLoop]: Abstraction has 688 states and 798 transitions. [2021-11-23 13:43:54,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.88888888888889) internal successors, (143), 9 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:54,528 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 798 transitions. [2021-11-23 13:43:54,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-23 13:43:54,530 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:54,530 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:43:54,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-23 13:43:54,530 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-23 13:43:54,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:54,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1335238730, now seen corresponding path program 1 times [2021-11-23 13:43:54,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:54,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563772355] [2021-11-23 13:43:54,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:54,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:54,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:54,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:43:54,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:54,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563772355] [2021-11-23 13:43:54,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563772355] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:54,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:54,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-23 13:43:54,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045346148] [2021-11-23 13:43:54,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:54,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 13:43:54,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:54,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 13:43:54,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-23 13:43:54,930 INFO L87 Difference]: Start difference. First operand 688 states and 798 transitions. Second operand has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:55,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:55,150 INFO L93 Difference]: Finished difference Result 862 states and 992 transitions. [2021-11-23 13:43:55,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:43:55,151 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 143 [2021-11-23 13:43:55,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:55,155 INFO L225 Difference]: With dead ends: 862 [2021-11-23 13:43:55,155 INFO L226 Difference]: Without dead ends: 672 [2021-11-23 13:43:55,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-11-23 13:43:55,157 INFO L933 BasicCegarLoop]: 552 mSDtfsCounter, 1490 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1490 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:43:55,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1490 Valid, 1204 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:43:55,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2021-11-23 13:43:55,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 672. [2021-11-23 13:43:55,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 647 states have (on average 1.1839258114374034) internal successors, (766), 671 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:55,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 766 transitions. [2021-11-23 13:43:55,254 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 766 transitions. Word has length 143 [2021-11-23 13:43:55,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:43:55,254 INFO L470 AbstractCegarLoop]: Abstraction has 672 states and 766 transitions. [2021-11-23 13:43:55,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:55,255 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 766 transitions. [2021-11-23 13:43:55,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-23 13:43:55,257 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:55,257 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:43:55,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-23 13:43:55,258 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-23 13:43:55,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:55,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1420026888, now seen corresponding path program 1 times [2021-11-23 13:43:55,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:55,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158927071] [2021-11-23 13:43:55,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:55,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:57,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:43:57,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:43:57,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:43:57,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158927071] [2021-11-23 13:43:57,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158927071] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:43:57,626 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:43:57,626 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 13:43:57,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277565648] [2021-11-23 13:43:57,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:43:57,627 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 13:43:57,627 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:43:57,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 13:43:57,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 13:43:57,628 INFO L87 Difference]: Start difference. First operand 672 states and 766 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:57,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:43:57,888 INFO L93 Difference]: Finished difference Result 1322 states and 1506 transitions. [2021-11-23 13:43:57,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 13:43:57,889 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 146 [2021-11-23 13:43:57,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:43:57,892 INFO L225 Difference]: With dead ends: 1322 [2021-11-23 13:43:57,893 INFO L226 Difference]: Without dead ends: 672 [2021-11-23 13:43:57,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 13:43:57,897 INFO L933 BasicCegarLoop]: 569 mSDtfsCounter, 4 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1629 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-23 13:43:57,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 1629 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-23 13:43:57,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2021-11-23 13:43:57,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 648. [2021-11-23 13:43:57,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 623 states have (on average 1.1781701444622792) internal successors, (734), 647 states have internal predecessors, (734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:57,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 734 transitions. [2021-11-23 13:43:57,962 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 734 transitions. Word has length 146 [2021-11-23 13:43:57,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:43:57,962 INFO L470 AbstractCegarLoop]: Abstraction has 648 states and 734 transitions. [2021-11-23 13:43:57,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:43:57,962 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 734 transitions. [2021-11-23 13:43:57,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-23 13:43:57,964 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:43:57,965 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:43:57,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-23 13:43:57,965 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-23 13:43:57,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:43:57,966 INFO L85 PathProgramCache]: Analyzing trace with hash 161407208, now seen corresponding path program 1 times [2021-11-23 13:43:57,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:43:57,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127333126] [2021-11-23 13:43:57,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:57,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:43:58,045 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:43:58,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [222169168] [2021-11-23 13:43:58,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:43:58,046 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:43:58,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:43:58,051 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:43:58,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 13:44:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:44:41,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 3211 conjuncts, 653 conjunts are in the unsatisfiable core [2021-11-23 13:44:41,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:44:41,558 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 13:44:42,054 INFO L354 Elim1Store]: treesize reduction 133, result has 15.3 percent of original size [2021-11-23 13:44:42,054 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 45 treesize of output 53 [2021-11-23 13:44:42,386 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 13:44:42,853 INFO L354 Elim1Store]: treesize reduction 112, result has 15.8 percent of original size [2021-11-23 13:44:42,853 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 3 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 32 treesize of output 41 [2021-11-23 13:44:43,207 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 27 treesize of output 22 [2021-11-23 13:44:43,597 INFO L354 Elim1Store]: treesize reduction 78, result has 20.4 percent of original size [2021-11-23 13:44:43,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 8 case distinctions, treesize of input 40 treesize of output 50 [2021-11-23 13:44:44,508 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:44:44,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:44:44,547 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-11-23 13:44:44,548 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 7 case distinctions, treesize of input 40 treesize of output 59 [2021-11-23 13:44:44,988 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-11-23 13:44:44,989 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 3 case distinctions, treesize of input 142 treesize of output 120 [2021-11-23 13:44:45,019 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 117 treesize of output 113 [2021-11-23 13:44:45,099 INFO L354 Elim1Store]: treesize reduction 160, result has 15.3 percent of original size [2021-11-23 13:44:45,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 140 treesize of output 153 [2021-11-23 13:44:45,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing 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 [2021-11-23 13:44:59,680 INFO L354 Elim1Store]: treesize reduction 774, result has 12.5 percent of original size [2021-11-23 13:44:59,680 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 9 select indices, 9 select index equivalence classes, 1 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 47 case distinctions, treesize of input 679 treesize of output 757 [2021-11-23 13:44:59,719 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:44:59,720 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-23 13:45:00,119 INFO L354 Elim1Store]: treesize reduction 178, result has 18.7 percent of original size [2021-11-23 13:45:00,120 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 858 treesize of output 647 [2021-11-23 13:45:00,174 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:45:00,175 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:45:00,178 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:45:00,777 INFO L354 Elim1Store]: treesize reduction 282, result has 20.6 percent of original size [2021-11-23 13:45:00,778 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 1039 treesize of output 873 [2021-11-23 13:45:00,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:45:00,937 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:45:00,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:45:01,032 INFO L354 Elim1Store]: treesize reduction 100, result has 29.1 percent of original size [2021-11-23 13:45:01,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 7 new quantified variables, introduced 7 case distinctions, treesize of input 859 treesize of output 885 [2021-11-23 13:45:01,408 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:45:01,412 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:45:01,426 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 13:45:01,426 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 2 case distinctions, treesize of input 107 treesize of output 67 [2021-11-23 13:45:01,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:45:01,669 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:45:01,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:45:01,688 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 13:45:01,689 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 9 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 124 treesize of output 80 [2021-11-23 13:45:14,017 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:45:14,018 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:45:14,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:45:14,030 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-11-23 13:45:14,031 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 636 treesize of output 524 [2021-11-23 13:45:14,888 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:45:14,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:45:14,892 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:45:14,904 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 13:45:14,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 474 treesize of output 321 [2021-11-23 13:45:15,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:45:15,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:45:15,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:45:15,757 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 13:45:15,758 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2021-11-23 13:45:16,263 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:45:16,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:45:16,272 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 13:45:16,272 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2021-11-23 13:45:16,328 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:45:16,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:45:16,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:45:16,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:45:16,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:45:16,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:45:16,343 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-23 13:45:16,344 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 86 treesize of output 58 [2021-11-23 13:45:16,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:45:16,366 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:45:16,367 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 10 [2021-11-23 13:45:19,188 INFO L354 Elim1Store]: treesize reduction 45, result has 19.6 percent of original size [2021-11-23 13:45:19,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 236 treesize of output 226 [2021-11-23 13:45:19,226 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-23 13:45:19,226 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 215 treesize of output 168 [2021-11-23 13:45:19,266 INFO L354 Elim1Store]: treesize reduction 27, result has 28.9 percent of original size [2021-11-23 13:45:19,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 200 treesize of output 185 [2021-11-23 13:45:20,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:45:20,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:45:20,745 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:45:20,854 INFO L354 Elim1Store]: treesize reduction 228, result has 13.3 percent of original size [2021-11-23 13:45:20,854 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 7 select indices, 7 select index equivalence classes, 7 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 70 treesize of output 85 [2021-11-23 13:45:21,800 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-11-23 13:45:21,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 183 treesize of output 168 [2021-11-23 13:45:21,840 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-23 13:45:21,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 181 treesize of output 138 [2021-11-23 13:45:21,864 INFO L354 Elim1Store]: treesize reduction 29, result has 19.4 percent of original size [2021-11-23 13:45:21,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 126 treesize of output 120 [2021-11-23 13:45:22,810 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:45:22,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 13:45:22,906 INFO L354 Elim1Store]: treesize reduction 162, result has 15.6 percent of original size [2021-11-23 13:45:22,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 17 case distinctions, treesize of input 78 treesize of output 94 [2021-11-23 13:45:25,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:45:25,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:45:25,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:45:25,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127333126] [2021-11-23 13:45:25,434 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:45:25,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222169168] [2021-11-23 13:45:25,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222169168] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:45:25,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:45:25,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [28] imperfect sequences [] total 28 [2021-11-23 13:45:25,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140501852] [2021-11-23 13:45:25,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:45:25,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-11-23 13:45:25,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:45:25,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-11-23 13:45:25,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2021-11-23 13:45:25,437 INFO L87 Difference]: Start difference. First operand 648 states and 734 transitions. Second operand has 29 states, 29 states have (on average 5.448275862068965) internal successors, (158), 28 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:45:25,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:45:25,614 INFO L93 Difference]: Finished difference Result 1290 states and 1461 transitions. [2021-11-23 13:45:25,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-23 13:45:25,616 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.448275862068965) internal successors, (158), 28 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2021-11-23 13:45:25,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:45:25,620 INFO L225 Difference]: With dead ends: 1290 [2021-11-23 13:45:25,620 INFO L226 Difference]: Without dead ends: 702 [2021-11-23 13:45:25,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 128 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2021-11-23 13:45:25,622 INFO L933 BasicCegarLoop]: 543 mSDtfsCounter, 66 mSDsluCounter, 2729 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 3272 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 528 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:45:25,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 3272 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 528 Unchecked, 0.1s Time] [2021-11-23 13:45:25,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2021-11-23 13:45:25,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 687. [2021-11-23 13:45:25,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 662 states have (on average 1.1722054380664653) internal successors, (776), 686 states have internal predecessors, (776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:45:25,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 776 transitions. [2021-11-23 13:45:25,693 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 776 transitions. Word has length 158 [2021-11-23 13:45:25,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:45:25,693 INFO L470 AbstractCegarLoop]: Abstraction has 687 states and 776 transitions. [2021-11-23 13:45:25,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.448275862068965) internal successors, (158), 28 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:45:25,694 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 776 transitions. [2021-11-23 13:45:25,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-23 13:45:25,696 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:45:25,696 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:45:25,767 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 13:45:25,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-23 13:45:25,918 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-23 13:45:25,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:45:25,918 INFO L85 PathProgramCache]: Analyzing trace with hash 2004049540, now seen corresponding path program 1 times [2021-11-23 13:45:25,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:45:25,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35952176] [2021-11-23 13:45:25,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:45:25,919 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:45:25,996 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:45:25,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1643352435] [2021-11-23 13:45:25,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:45:25,996 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:45:25,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:45:26,003 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:45:26,041 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 13:45:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:45:26,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 3220 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:45:26,728 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:45:26,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:45:26,973 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:45:26,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:45:26,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35952176] [2021-11-23 13:45:26,973 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:45:26,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643352435] [2021-11-23 13:45:26,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643352435] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:45:26,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:45:26,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 13:45:26,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563262645] [2021-11-23 13:45:26,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:45:26,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:45:26,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:45:26,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:45:26,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:45:26,975 INFO L87 Difference]: Start difference. First operand 687 states and 776 transitions. Second operand has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:45:27,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:45:27,264 INFO L93 Difference]: Finished difference Result 1910 states and 2164 transitions. [2021-11-23 13:45:27,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:45:27,265 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-11-23 13:45:27,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:45:27,272 INFO L225 Difference]: With dead ends: 1910 [2021-11-23 13:45:27,272 INFO L226 Difference]: Without dead ends: 1257 [2021-11-23 13:45:27,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-23 13:45:27,274 INFO L933 BasicCegarLoop]: 594 mSDtfsCounter, 550 mSDsluCounter, 2282 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 550 SdHoareTripleChecker+Valid, 2876 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:45:27,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [550 Valid, 2876 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:45:27,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2021-11-23 13:45:27,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 674. [2021-11-23 13:45:27,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 649 states have (on average 1.1664098613251155) internal successors, (757), 673 states have internal predecessors, (757), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:45:27,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 757 transitions. [2021-11-23 13:45:27,351 INFO L78 Accepts]: Start accepts. Automaton has 674 states and 757 transitions. Word has length 160 [2021-11-23 13:45:27,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:45:27,351 INFO L470 AbstractCegarLoop]: Abstraction has 674 states and 757 transitions. [2021-11-23 13:45:27,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:45:27,352 INFO L276 IsEmpty]: Start isEmpty. Operand 674 states and 757 transitions. [2021-11-23 13:45:27,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-11-23 13:45:27,354 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:45:27,354 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:45:27,395 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 13:45:27,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:45:27,567 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-23 13:45:27,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:45:27,568 INFO L85 PathProgramCache]: Analyzing trace with hash -965376508, now seen corresponding path program 1 times [2021-11-23 13:45:27,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:45:27,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815467804] [2021-11-23 13:45:27,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:45:27,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:45:27,620 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:45:27,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1972997809] [2021-11-23 13:45:27,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:45:27,620 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:45:27,621 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:45:27,624 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:45:27,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 13:45:28,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 13:45:28,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 3220 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 13:45:28,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 13:45:28,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-23 13:45:28,561 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 13:45:28,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-23 13:45:28,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815467804] [2021-11-23 13:45:28,561 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-23 13:45:28,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972997809] [2021-11-23 13:45:28,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972997809] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 13:45:28,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 13:45:28,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 13:45:28,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114590959] [2021-11-23 13:45:28,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 13:45:28,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 13:45:28,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-23 13:45:28,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 13:45:28,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 13:45:28,564 INFO L87 Difference]: Start difference. First operand 674 states and 757 transitions. Second operand has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:45:28,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 13:45:28,756 INFO L93 Difference]: Finished difference Result 1272 states and 1434 transitions. [2021-11-23 13:45:28,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-23 13:45:28,757 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 160 [2021-11-23 13:45:28,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 13:45:28,761 INFO L225 Difference]: With dead ends: 1272 [2021-11-23 13:45:28,761 INFO L226 Difference]: Without dead ends: 632 [2021-11-23 13:45:28,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-23 13:45:28,763 INFO L933 BasicCegarLoop]: 548 mSDtfsCounter, 24 mSDsluCounter, 2148 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 2696 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-23 13:45:28,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 2696 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-23 13:45:28,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2021-11-23 13:45:28,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 632. [2021-11-23 13:45:28,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 607 states have (on average 1.1680395387149918) internal successors, (709), 631 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:45:28,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 709 transitions. [2021-11-23 13:45:28,829 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 709 transitions. Word has length 160 [2021-11-23 13:45:28,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 13:45:28,829 INFO L470 AbstractCegarLoop]: Abstraction has 632 states and 709 transitions. [2021-11-23 13:45:28,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.666666666666668) internal successors, (160), 6 states have internal predecessors, (160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-23 13:45:28,830 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 709 transitions. [2021-11-23 13:45:28,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-23 13:45:28,832 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 13:45:28,832 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 13:45:28,875 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 13:45:29,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-23 13:45:29,060 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 22 more)] === [2021-11-23 13:45:29,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 13:45:29,060 INFO L85 PathProgramCache]: Analyzing trace with hash 385970761, now seen corresponding path program 1 times [2021-11-23 13:45:29,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-23 13:45:29,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787490251] [2021-11-23 13:45:29,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:45:29,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 13:45:29,114 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-23 13:45:29,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [729410063] [2021-11-23 13:45:29,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 13:45:29,114 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 13:45:29,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/z3 [2021-11-23 13:45:29,115 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 13:45:29,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2b7ad688-f3c6-4aff-81c8-c388e1233553/bin/uautomizer-wIGwrQj20G/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process