./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 76206b4f7fb4016a4087a30dbd51e90ef533ed916c2eae20331e23ac9a9e91be --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 03:19:02,530 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 03:19:02,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 03:19:02,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 03:19:02,581 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 03:19:02,584 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 03:19:02,585 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 03:19:02,588 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 03:19:02,590 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 03:19:02,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 03:19:02,594 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 03:19:02,596 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 03:19:02,596 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 03:19:02,598 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 03:19:02,600 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 03:19:02,607 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 03:19:02,608 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 03:19:02,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 03:19:02,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 03:19:02,615 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 03:19:02,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 03:19:02,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 03:19:02,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 03:19:02,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 03:19:02,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 03:19:02,627 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 03:19:02,627 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 03:19:02,628 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 03:19:02,629 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 03:19:02,630 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 03:19:02,630 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 03:19:02,631 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 03:19:02,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 03:19:02,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 03:19:02,635 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 03:19:02,635 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 03:19:02,635 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 03:19:02,636 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 03:19:02,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 03:19:02,637 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 03:19:02,637 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 03:19:02,638 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-16 03:19:02,671 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 03:19:02,672 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 03:19:02,672 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 03:19:02,673 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 03:19:02,673 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 03:19:02,674 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 03:19:02,674 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 03:19:02,674 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 03:19:02,675 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 03:19:02,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 03:19:02,676 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 03:19:02,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 03:19:02,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 03:19:02,677 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 03:19:02,677 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 03:19:02,677 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 03:19:02,677 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 03:19:02,677 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 03:19:02,678 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 03:19:02,678 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 03:19:02,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 03:19:02,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:19:02,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 03:19:02,679 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 03:19:02,679 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 03:19:02,679 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 03:19:02,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 03:19:02,681 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 03:19:02,681 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 03:19:02,681 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 03:19:02,681 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 03:19:02,681 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 76206b4f7fb4016a4087a30dbd51e90ef533ed916c2eae20331e23ac9a9e91be [2021-12-16 03:19:02,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 03:19:02,925 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 03:19:02,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 03:19:02,928 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 03:19:02,929 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 03:19:02,930 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i [2021-12-16 03:19:02,987 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5ff53969/d71e2d765ef1404c99e810eef2c1d1d9/FLAGd0f081ad9 [2021-12-16 03:19:03,669 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 03:19:03,670 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i [2021-12-16 03:19:03,710 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5ff53969/d71e2d765ef1404c99e810eef2c1d1d9/FLAGd0f081ad9 [2021-12-16 03:19:03,967 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5ff53969/d71e2d765ef1404c99e810eef2c1d1d9 [2021-12-16 03:19:03,969 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 03:19:03,970 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 03:19:03,972 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 03:19:03,972 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 03:19:03,975 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 03:19:03,976 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:19:03" (1/1) ... [2021-12-16 03:19:03,976 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6aa19be0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:19:03, skipping insertion in model container [2021-12-16 03:19:03,977 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:19:03" (1/1) ... [2021-12-16 03:19:03,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 03:19:04,090 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 03:19:04,375 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i[4494,4507] [2021-12-16 03:19:04,382 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i[4554,4567] [2021-12-16 03:19:05,180 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:05,181 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:05,182 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:05,182 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:05,183 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:05,193 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:05,194 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:05,196 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:05,196 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:05,198 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:05,198 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:05,199 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:05,199 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:05,485 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-16 03:19:05,486 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-16 03:19:05,487 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-16 03:19:05,488 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-16 03:19:05,489 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-16 03:19:05,489 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-16 03:19:05,490 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-16 03:19:05,491 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-16 03:19:05,491 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-16 03:19:05,492 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-16 03:19:05,650 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-16 03:19:05,973 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:05,974 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:05,999 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:06,000 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:06,004 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:06,004 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:06,015 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:06,019 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:06,020 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:06,020 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:06,021 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:06,021 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:06,021 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:06,048 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:19:06,090 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 03:19:06,111 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i[4494,4507] [2021-12-16 03:19:06,112 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i[4554,4567] [2021-12-16 03:19:06,142 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:06,145 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:06,146 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:06,146 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:06,146 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:06,153 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:06,154 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:06,155 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:06,155 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:06,155 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:06,156 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:06,157 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:06,158 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:06,182 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-16 03:19:06,183 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-16 03:19:06,184 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-16 03:19:06,184 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-16 03:19:06,185 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-16 03:19:06,185 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-16 03:19:06,186 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-16 03:19:06,186 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-16 03:19:06,186 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-16 03:19:06,187 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-16 03:19:06,203 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-16 03:19:06,312 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:06,313 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:06,318 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:06,323 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:06,325 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:06,325 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:06,336 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:06,337 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:06,338 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:06,338 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:06,338 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:06,339 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:06,339 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:19:06,358 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:19:06,578 INFO L208 MainTranslator]: Completed translation [2021-12-16 03:19:06,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:19:06 WrapperNode [2021-12-16 03:19:06,579 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 03:19:06,579 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 03:19:06,580 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 03:19:06,581 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 03:19:06,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:19:06" (1/1) ... [2021-12-16 03:19:06,708 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:19:06" (1/1) ... [2021-12-16 03:19:06,779 INFO L137 Inliner]: procedures = 775, calls = 2440, calls flagged for inlining = 68, calls inlined = 13, statements flattened = 620 [2021-12-16 03:19:06,780 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 03:19:06,781 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 03:19:06,782 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 03:19:06,782 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 03:19:06,790 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:19:06" (1/1) ... [2021-12-16 03:19:06,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:19:06" (1/1) ... [2021-12-16 03:19:06,801 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:19:06" (1/1) ... [2021-12-16 03:19:06,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:19:06" (1/1) ... [2021-12-16 03:19:06,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:19:06" (1/1) ... [2021-12-16 03:19:06,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:19:06" (1/1) ... [2021-12-16 03:19:06,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:19:06" (1/1) ... [2021-12-16 03:19:06,849 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 03:19:06,850 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 03:19:06,850 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 03:19:06,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 03:19:06,866 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:19:06" (1/1) ... [2021-12-16 03:19:06,872 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:19:06,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:19:06,904 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 03:19:06,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 03:19:06,947 INFO L130 BoogieDeclarations]: Found specification of procedure memset_override_0_impl [2021-12-16 03:19:06,947 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_override_0_impl [2021-12-16 03:19:06,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-16 03:19:06,948 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-16 03:19:06,948 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-16 03:19:06,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 03:19:06,948 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-16 03:19:06,948 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-16 03:19:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-16 03:19:06,949 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-16 03:19:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-12-16 03:19:06,949 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-12-16 03:19:06,949 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_clear [2021-12-16 03:19:06,949 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_clear [2021-12-16 03:19:06,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 03:19:06,950 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 03:19:06,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 03:19:06,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 03:19:06,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 03:19:06,950 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-16 03:19:06,951 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-16 03:19:06,951 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-16 03:19:06,951 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-16 03:19:06,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 03:19:06,951 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-12-16 03:19:06,952 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-12-16 03:19:06,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 03:19:06,952 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-16 03:19:06,952 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-16 03:19:06,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 03:19:06,952 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2021-12-16 03:19:06,952 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2021-12-16 03:19:06,953 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-12-16 03:19:06,953 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-12-16 03:19:06,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 03:19:06,953 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-12-16 03:19:06,954 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-12-16 03:19:06,954 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-16 03:19:06,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-16 03:19:06,954 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-16 03:19:06,954 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-16 03:19:06,955 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-12-16 03:19:06,955 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-12-16 03:19:06,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-16 03:19:06,958 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-16 03:19:06,958 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-16 03:19:06,958 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-12-16 03:19:06,958 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-12-16 03:19:06,959 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 03:19:07,299 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 03:19:07,301 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 03:19:07,867 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 03:19:07,879 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 03:19:07,879 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-16 03:19:07,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:19:07 BoogieIcfgContainer [2021-12-16 03:19:07,881 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 03:19:07,882 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 03:19:07,883 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 03:19:07,885 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 03:19:07,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:19:03" (1/3) ... [2021-12-16 03:19:07,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1c301a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:19:07, skipping insertion in model container [2021-12-16 03:19:07,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:19:06" (2/3) ... [2021-12-16 03:19:07,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b1c301a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:19:07, skipping insertion in model container [2021-12-16 03:19:07,886 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:19:07" (3/3) ... [2021-12-16 03:19:07,888 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_clear_harness.i [2021-12-16 03:19:07,894 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 03:19:07,894 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 03:19:07,941 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 03:19:07,957 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 [2021-12-16 03:19:07,957 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 03:19:07,977 INFO L276 IsEmpty]: Start isEmpty. Operand has 171 states, 110 states have (on average 1.2) internal successors, (132), 111 states have internal predecessors, (132), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-12-16 03:19:07,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-16 03:19:07,991 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:19:07,992 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:19:07,993 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:19:07,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:19:07,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1492385641, now seen corresponding path program 1 times [2021-12-16 03:19:08,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:19:08,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889421139] [2021-12-16 03:19:08,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:19:08,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:19:08,313 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:19:08,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [451728430] [2021-12-16 03:19:08,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:19:08,314 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:19:08,314 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:19:08,315 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:19:08,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 03:19:08,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:08,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 2368 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-16 03:19:08,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:19:09,096 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2021-12-16 03:19:09,096 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:19:09,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:19:09,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889421139] [2021-12-16 03:19:09,097 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:19:09,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [451728430] [2021-12-16 03:19:09,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [451728430] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:19:09,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:19:09,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 03:19:09,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336251337] [2021-12-16 03:19:09,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:19:09,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 03:19:09,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:19:09,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 03:19:09,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:19:09,126 INFO L87 Difference]: Start difference. First operand has 171 states, 110 states have (on average 1.2) internal successors, (132), 111 states have internal predecessors, (132), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-16 03:19:09,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:19:09,167 INFO L93 Difference]: Finished difference Result 338 states and 443 transitions. [2021-12-16 03:19:09,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 03:19:09,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 141 [2021-12-16 03:19:09,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:19:09,181 INFO L225 Difference]: With dead ends: 338 [2021-12-16 03:19:09,181 INFO L226 Difference]: Without dead ends: 165 [2021-12-16 03:19:09,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:19:09,199 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 0 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:19:09,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 414 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:19:09,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2021-12-16 03:19:09,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2021-12-16 03:19:09,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 105 states have (on average 1.161904761904762) internal successors, (122), 106 states have internal predecessors, (122), 41 states have call successors, (41), 18 states have call predecessors, (41), 18 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2021-12-16 03:19:09,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 203 transitions. [2021-12-16 03:19:09,241 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 203 transitions. Word has length 141 [2021-12-16 03:19:09,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:19:09,242 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 203 transitions. [2021-12-16 03:19:09,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-16 03:19:09,243 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 203 transitions. [2021-12-16 03:19:09,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-16 03:19:09,245 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:19:09,245 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:19:09,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-16 03:19:09,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-12-16 03:19:09,472 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:19:09,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:19:09,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1781513301, now seen corresponding path program 1 times [2021-12-16 03:19:09,473 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:19:09,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210027905] [2021-12-16 03:19:09,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:19:09,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:19:09,567 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:19:09,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1898298552] [2021-12-16 03:19:09,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:19:09,568 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:19:09,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:19:09,569 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:19:09,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 03:19:10,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:10,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 2373 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-16 03:19:10,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:19:10,304 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-12-16 03:19:10,305 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:19:10,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:19:10,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210027905] [2021-12-16 03:19:10,305 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-16 03:19:10,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898298552] [2021-12-16 03:19:10,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898298552] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:19:10,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:19:10,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:19:10,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122327248] [2021-12-16 03:19:10,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:19:10,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:19:10,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:19:10,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:19:10,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:19:10,308 INFO L87 Difference]: Start difference. First operand 165 states and 203 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-16 03:19:10,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:19:10,357 INFO L93 Difference]: Finished difference Result 293 states and 361 transitions. [2021-12-16 03:19:10,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:19:10,358 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 141 [2021-12-16 03:19:10,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:19:10,360 INFO L225 Difference]: With dead ends: 293 [2021-12-16 03:19:10,360 INFO L226 Difference]: Without dead ends: 170 [2021-12-16 03:19:10,361 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:19:10,361 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 2 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:19:10,362 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 792 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:19:10,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-12-16 03:19:10,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-12-16 03:19:10,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 109 states have (on average 1.1559633027522935) internal successors, (126), 110 states have internal predecessors, (126), 41 states have call successors, (41), 18 states have call predecessors, (41), 19 states have return successors, (41), 41 states have call predecessors, (41), 40 states have call successors, (41) [2021-12-16 03:19:10,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 208 transitions. [2021-12-16 03:19:10,375 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 208 transitions. Word has length 141 [2021-12-16 03:19:10,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:19:10,375 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 208 transitions. [2021-12-16 03:19:10,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-16 03:19:10,376 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 208 transitions. [2021-12-16 03:19:10,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-16 03:19:10,378 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:19:10,378 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:19:10,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-16 03:19:10,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-12-16 03:19:10,587 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:19:10,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:19:10,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1672801995, now seen corresponding path program 1 times [2021-12-16 03:19:10,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:19:10,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596584787] [2021-12-16 03:19:10,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:19:10,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:19:10,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:10,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:19:10,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:10,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 03:19:10,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:10,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 03:19:10,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:10,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 03:19:10,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:10,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 03:19:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:10,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:19:10,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:10,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:19:10,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:10,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 03:19:10,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:10,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:19:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:10,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 03:19:10,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:11,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:19:11,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:11,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-16 03:19:11,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:11,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-16 03:19:11,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:11,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 03:19:11,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:11,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-16 03:19:11,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:11,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 03:19:11,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:11,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 03:19:11,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:11,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-16 03:19:11,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:11,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 03:19:11,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:11,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-16 03:19:11,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:11,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-16 03:19:11,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:11,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-16 03:19:11,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:11,206 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-12-16 03:19:11,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:19:11,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596584787] [2021-12-16 03:19:11,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596584787] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:19:11,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81833902] [2021-12-16 03:19:11,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:19:11,207 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:19:11,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:19:11,208 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:19:11,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-16 03:19:11,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:11,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 2377 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-16 03:19:11,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:19:11,941 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 [2021-12-16 03:19:12,455 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-12-16 03:19:12,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:19:12,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81833902] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:19:12,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:19:12,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 21 [2021-12-16 03:19:12,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136424676] [2021-12-16 03:19:12,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:19:12,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:19:12,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:19:12,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:19:12,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2021-12-16 03:19:12,459 INFO L87 Difference]: Start difference. First operand 170 states and 208 transitions. Second operand has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 9 states have internal predecessors, (73), 4 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-12-16 03:19:12,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:19:12,590 INFO L93 Difference]: Finished difference Result 291 states and 358 transitions. [2021-12-16 03:19:12,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 03:19:12,591 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 9 states have internal predecessors, (73), 4 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 147 [2021-12-16 03:19:12,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:19:12,598 INFO L225 Difference]: With dead ends: 291 [2021-12-16 03:19:12,598 INFO L226 Difference]: Without dead ends: 179 [2021-12-16 03:19:12,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 180 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2021-12-16 03:19:12,599 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 19 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1130 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:19:12,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 1130 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 36 Unchecked, 0.1s Time] [2021-12-16 03:19:12,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2021-12-16 03:19:12,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2021-12-16 03:19:12,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 117 states have (on average 1.1623931623931625) internal successors, (136), 118 states have internal predecessors, (136), 41 states have call successors, (41), 19 states have call predecessors, (41), 20 states have return successors, (42), 41 states have call predecessors, (42), 40 states have call successors, (42) [2021-12-16 03:19:12,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 219 transitions. [2021-12-16 03:19:12,612 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 219 transitions. Word has length 147 [2021-12-16 03:19:12,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:19:12,612 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 219 transitions. [2021-12-16 03:19:12,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 9 states have internal predecessors, (73), 4 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-12-16 03:19:12,613 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 219 transitions. [2021-12-16 03:19:12,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-16 03:19:12,615 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:19:12,616 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:19:12,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-16 03:19:12,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:19:12,820 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:19:12,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:19:12,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1055407351, now seen corresponding path program 1 times [2021-12-16 03:19:12,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:19:12,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921235154] [2021-12-16 03:19:12,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:19:12,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:19:12,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:12,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:19:13,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:13,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 03:19:13,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:13,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 03:19:13,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:13,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 03:19:13,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:13,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 03:19:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:13,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:19:13,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:13,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:19:13,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:13,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 03:19:13,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:13,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:19:13,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:13,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 03:19:13,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:13,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:19:13,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:13,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-16 03:19:13,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:13,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-16 03:19:13,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:13,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 03:19:13,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:13,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-16 03:19:13,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:13,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 03:19:13,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:13,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 03:19:13,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:13,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-16 03:19:13,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:13,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-16 03:19:13,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:13,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-16 03:19:13,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:13,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-16 03:19:13,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:13,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-16 03:19:13,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:13,255 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-12-16 03:19:13,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:19:13,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921235154] [2021-12-16 03:19:13,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921235154] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:19:13,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694815329] [2021-12-16 03:19:13,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:19:13,256 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:19:13,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:19:13,258 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:19:13,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-16 03:19:13,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:13,669 INFO L263 TraceCheckSpWp]: Trace formula consists of 2372 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 03:19:13,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:19:13,960 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-12-16 03:19:13,960 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:19:13,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694815329] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:19:13,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:19:13,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-12-16 03:19:13,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743204168] [2021-12-16 03:19:13,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:19:13,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:19:13,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:19:13,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:19:13,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-16 03:19:13,963 INFO L87 Difference]: Start difference. First operand 179 states and 219 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-16 03:19:14,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:19:14,134 INFO L93 Difference]: Finished difference Result 295 states and 366 transitions. [2021-12-16 03:19:14,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 03:19:14,135 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 147 [2021-12-16 03:19:14,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:19:14,138 INFO L225 Difference]: With dead ends: 295 [2021-12-16 03:19:14,138 INFO L226 Difference]: Without dead ends: 181 [2021-12-16 03:19:14,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-12-16 03:19:14,143 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 209 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:19:14,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 660 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:19:14,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-12-16 03:19:14,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2021-12-16 03:19:14,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 118 states have (on average 1.152542372881356) internal successors, (136), 119 states have internal predecessors, (136), 42 states have call successors, (42), 19 states have call predecessors, (42), 20 states have return successors, (44), 42 states have call predecessors, (44), 41 states have call successors, (44) [2021-12-16 03:19:14,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 222 transitions. [2021-12-16 03:19:14,171 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 222 transitions. Word has length 147 [2021-12-16 03:19:14,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:19:14,171 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 222 transitions. [2021-12-16 03:19:14,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-16 03:19:14,171 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 222 transitions. [2021-12-16 03:19:14,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-16 03:19:14,176 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:19:14,177 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:19:14,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-16 03:19:14,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:19:14,404 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:19:14,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:19:14,404 INFO L85 PathProgramCache]: Analyzing trace with hash 648263323, now seen corresponding path program 1 times [2021-12-16 03:19:14,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:19:14,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842957153] [2021-12-16 03:19:14,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:19:14,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:19:14,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:14,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:19:14,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:14,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 03:19:14,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:14,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 03:19:14,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:14,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 03:19:14,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:14,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 03:19:14,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:14,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:19:14,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:14,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:19:14,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:14,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 03:19:14,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:14,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:19:14,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:14,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 03:19:14,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:14,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:19:14,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:14,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-16 03:19:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:14,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 03:19:14,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:14,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 03:19:14,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:14,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-16 03:19:14,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:14,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-16 03:19:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:14,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 03:19:14,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:14,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-16 03:19:14,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:14,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-16 03:19:14,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:14,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-16 03:19:14,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:14,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-16 03:19:14,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:14,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-16 03:19:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:14,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-16 03:19:14,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:14,780 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2021-12-16 03:19:14,780 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:19:14,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842957153] [2021-12-16 03:19:14,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842957153] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:19:14,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107144778] [2021-12-16 03:19:14,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:19:14,781 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:19:14,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:19:14,782 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:19:14,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-16 03:19:15,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:15,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 2401 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-16 03:19:15,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:19:16,278 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= (select (select |c_#memory_$Pointer$.offset| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset) 0))) (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= (select (select |c_#memory_$Pointer$.base| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset) 0)))) is different from true [2021-12-16 03:19:22,176 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-12-16 03:19:22,177 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:19:22,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107144778] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:19:22,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:19:22,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2021-12-16 03:19:22,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410880346] [2021-12-16 03:19:22,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:19:22,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 03:19:22,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:19:22,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 03:19:22,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=175, Unknown=3, NotChecked=26, Total=240 [2021-12-16 03:19:22,179 INFO L87 Difference]: Start difference. First operand 181 states and 222 transitions. Second operand has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-16 03:19:22,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:19:22,360 INFO L93 Difference]: Finished difference Result 302 states and 378 transitions. [2021-12-16 03:19:22,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 03:19:22,361 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) Word has length 153 [2021-12-16 03:19:22,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:19:22,362 INFO L225 Difference]: With dead ends: 302 [2021-12-16 03:19:22,362 INFO L226 Difference]: Without dead ends: 184 [2021-12-16 03:19:22,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 6.7s TimeCoverageRelationStatistics Valid=51, Invalid=222, Unknown=3, NotChecked=30, Total=306 [2021-12-16 03:19:22,363 INFO L933 BasicCegarLoop]: 198 mSDtfsCounter, 5 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 1074 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 292 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:19:22,364 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 1074 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 292 Unchecked, 0.1s Time] [2021-12-16 03:19:22,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-12-16 03:19:22,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 183. [2021-12-16 03:19:22,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 120 states have (on average 1.15) internal successors, (138), 120 states have internal predecessors, (138), 42 states have call successors, (42), 20 states have call predecessors, (42), 20 states have return successors, (44), 42 states have call predecessors, (44), 41 states have call successors, (44) [2021-12-16 03:19:22,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 224 transitions. [2021-12-16 03:19:22,380 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 224 transitions. Word has length 153 [2021-12-16 03:19:22,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:19:22,380 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 224 transitions. [2021-12-16 03:19:22,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 10.714285714285714) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (23), 2 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-16 03:19:22,381 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 224 transitions. [2021-12-16 03:19:22,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-12-16 03:19:22,382 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:19:22,382 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:19:22,402 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-16 03:19:22,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:19:22,583 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:19:22,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:19:22,583 INFO L85 PathProgramCache]: Analyzing trace with hash -972908871, now seen corresponding path program 1 times [2021-12-16 03:19:22,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:19:22,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855967516] [2021-12-16 03:19:22,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:19:22,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:19:22,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:22,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:19:22,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:22,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 03:19:22,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:22,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 03:19:22,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:22,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 03:19:22,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:22,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 03:19:22,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:22,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:19:22,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:22,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:19:22,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:22,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 03:19:22,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:22,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:19:22,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:22,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 03:19:22,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:23,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:19:23,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:23,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-16 03:19:23,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:23,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 03:19:23,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:23,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:19:23,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:23,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 03:19:23,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:23,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-16 03:19:23,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:23,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-16 03:19:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:23,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-16 03:19:23,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:23,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-16 03:19:23,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:23,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-16 03:19:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:23,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-16 03:19:23,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:23,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-16 03:19:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:23,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-16 03:19:23,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:23,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-16 03:19:23,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:23,150 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2021-12-16 03:19:23,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:19:23,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855967516] [2021-12-16 03:19:23,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855967516] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:19:23,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:19:23,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-16 03:19:23,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618741948] [2021-12-16 03:19:23,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:19:23,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-16 03:19:23,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:19:23,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-16 03:19:23,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:19:23,153 INFO L87 Difference]: Start difference. First operand 183 states and 224 transitions. Second operand has 11 states, 9 states have (on average 7.555555555555555) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (28), 7 states have call predecessors, (28), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-16 03:19:23,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:19:23,874 INFO L93 Difference]: Finished difference Result 205 states and 249 transitions. [2021-12-16 03:19:23,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-16 03:19:23,874 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 7.555555555555555) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (28), 7 states have call predecessors, (28), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 158 [2021-12-16 03:19:23,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:19:23,878 INFO L225 Difference]: With dead ends: 205 [2021-12-16 03:19:23,879 INFO L226 Difference]: Without dead ends: 203 [2021-12-16 03:19:23,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2021-12-16 03:19:23,881 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 141 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 717 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 797 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-16 03:19:23,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 938 Invalid, 797 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 717 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-16 03:19:23,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2021-12-16 03:19:23,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 187. [2021-12-16 03:19:23,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 123 states have (on average 1.146341463414634) internal successors, (141), 123 states have internal predecessors, (141), 42 states have call successors, (42), 21 states have call predecessors, (42), 21 states have return successors, (44), 42 states have call predecessors, (44), 41 states have call successors, (44) [2021-12-16 03:19:23,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 227 transitions. [2021-12-16 03:19:23,905 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 227 transitions. Word has length 158 [2021-12-16 03:19:23,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:19:23,906 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 227 transitions. [2021-12-16 03:19:23,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 7.555555555555555) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (28), 7 states have call predecessors, (28), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-16 03:19:23,907 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 227 transitions. [2021-12-16 03:19:23,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-16 03:19:23,908 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:19:23,909 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:19:23,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 03:19:23,909 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:19:23,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:19:23,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1485215646, now seen corresponding path program 1 times [2021-12-16 03:19:23,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:19:23,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029394028] [2021-12-16 03:19:23,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:19:23,911 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:19:24,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:24,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:19:24,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:24,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 03:19:24,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:24,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 03:19:24,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:24,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 03:19:24,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:24,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 03:19:24,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:24,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:19:24,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:24,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:19:24,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:24,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 03:19:24,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:24,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:19:24,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:24,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 03:19:24,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:24,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:19:24,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:24,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-16 03:19:24,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:25,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 03:19:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:25,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:19:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:25,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 03:19:25,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:25,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-16 03:19:25,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:25,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-16 03:19:25,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:25,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-16 03:19:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:25,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-16 03:19:25,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:25,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-16 03:19:25,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:25,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-16 03:19:25,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:25,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-16 03:19:25,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:25,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-16 03:19:25,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:25,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-16 03:19:25,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:25,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-16 03:19:25,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:25,345 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 191 trivial. 0 not checked. [2021-12-16 03:19:25,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:19:25,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029394028] [2021-12-16 03:19:25,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029394028] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:19:25,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343223891] [2021-12-16 03:19:25,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:19:25,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:19:25,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:19:25,347 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:19:25,349 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-16 03:19:25,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:25,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 2442 conjuncts, 66 conjunts are in the unsatisfiable core [2021-12-16 03:19:25,798 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:19:26,069 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-16 03:19:33,037 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 72 proven. 16 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-12-16 03:19:33,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:19:33,855 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 29 proven. 3 refuted. 0 times theorem prover too weak. 166 trivial. 0 not checked. [2021-12-16 03:19:33,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343223891] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 03:19:33,855 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 03:19:33,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 19, 9] total 51 [2021-12-16 03:19:33,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376028722] [2021-12-16 03:19:33,856 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 03:19:33,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-12-16 03:19:33,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:19:33,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-12-16 03:19:33,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=2412, Unknown=3, NotChecked=0, Total=2550 [2021-12-16 03:19:33,859 INFO L87 Difference]: Start difference. First operand 187 states and 227 transitions. Second operand has 51 states, 45 states have (on average 3.488888888888889) internal successors, (157), 39 states have internal predecessors, (157), 21 states have call successors, (67), 8 states have call predecessors, (67), 14 states have return successors, (62), 20 states have call predecessors, (62), 21 states have call successors, (62) [2021-12-16 03:19:42,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:19:42,174 INFO L93 Difference]: Finished difference Result 322 states and 387 transitions. [2021-12-16 03:19:42,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-12-16 03:19:42,175 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 45 states have (on average 3.488888888888889) internal successors, (157), 39 states have internal predecessors, (157), 21 states have call successors, (67), 8 states have call predecessors, (67), 14 states have return successors, (62), 20 states have call predecessors, (62), 21 states have call successors, (62) Word has length 164 [2021-12-16 03:19:42,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:19:42,177 INFO L225 Difference]: With dead ends: 322 [2021-12-16 03:19:42,177 INFO L226 Difference]: Without dead ends: 224 [2021-12-16 03:19:42,179 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 360 SyntacticMatches, 1 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1474 ImplicationChecksByTransitivity, 12.8s TimeCoverageRelationStatistics Valid=470, Invalid=7007, Unknown=5, NotChecked=0, Total=7482 [2021-12-16 03:19:42,179 INFO L933 BasicCegarLoop]: 139 mSDtfsCounter, 418 mSDsluCounter, 2188 mSDsCounter, 0 mSdLazyCounter, 4942 mSolverCounterSat, 346 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 2327 SdHoareTripleChecker+Invalid, 5879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 346 IncrementalHoareTripleChecker+Valid, 4942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 591 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-16 03:19:42,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [423 Valid, 2327 Invalid, 5879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [346 Valid, 4942 Invalid, 0 Unknown, 591 Unchecked, 2.8s Time] [2021-12-16 03:19:42,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2021-12-16 03:19:42,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 207. [2021-12-16 03:19:42,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 136 states have (on average 1.1323529411764706) internal successors, (154), 139 states have internal predecessors, (154), 44 states have call successors, (44), 23 states have call predecessors, (44), 26 states have return successors, (49), 44 states have call predecessors, (49), 43 states have call successors, (49) [2021-12-16 03:19:42,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 247 transitions. [2021-12-16 03:19:42,193 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 247 transitions. Word has length 164 [2021-12-16 03:19:42,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:19:42,193 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 247 transitions. [2021-12-16 03:19:42,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 45 states have (on average 3.488888888888889) internal successors, (157), 39 states have internal predecessors, (157), 21 states have call successors, (67), 8 states have call predecessors, (67), 14 states have return successors, (62), 20 states have call predecessors, (62), 21 states have call successors, (62) [2021-12-16 03:19:42,194 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 247 transitions. [2021-12-16 03:19:42,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-12-16 03:19:42,196 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:19:42,196 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:19:42,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-16 03:19:42,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:19:42,420 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:19:42,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:19:42,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1074072620, now seen corresponding path program 1 times [2021-12-16 03:19:42,421 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:19:42,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102513844] [2021-12-16 03:19:42,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:19:42,421 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:19:42,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:42,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:19:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:42,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 03:19:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:42,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 03:19:42,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:42,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 03:19:42,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:42,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 03:19:42,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:42,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:19:42,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:42,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:19:42,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:42,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 03:19:42,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:42,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:19:42,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:42,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 03:19:42,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:42,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:19:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:42,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-16 03:19:42,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:43,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 03:19:43,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:43,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:19:43,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:43,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 03:19:43,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:43,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-16 03:19:43,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:43,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-16 03:19:43,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:43,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-16 03:19:43,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:43,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-16 03:19:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:43,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-16 03:19:43,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:43,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-16 03:19:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:43,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-16 03:19:43,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:43,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 03:19:43,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:43,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-16 03:19:43,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:43,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-16 03:19:43,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:43,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-16 03:19:43,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:43,150 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2021-12-16 03:19:43,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:19:43,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102513844] [2021-12-16 03:19:43,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102513844] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:19:43,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1110249168] [2021-12-16 03:19:43,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:19:43,151 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:19:43,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:19:43,156 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:19:43,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-16 03:19:43,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:43,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 2461 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 03:19:43,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:19:43,830 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2021-12-16 03:19:43,831 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:19:43,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1110249168] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:19:43,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:19:43,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 13 [2021-12-16 03:19:43,831 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573646943] [2021-12-16 03:19:43,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:19:43,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:19:43,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:19:43,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:19:43,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-16 03:19:43,833 INFO L87 Difference]: Start difference. First operand 207 states and 247 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-16 03:19:43,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:19:43,862 INFO L93 Difference]: Finished difference Result 303 states and 361 transitions. [2021-12-16 03:19:43,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:19:43,863 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 170 [2021-12-16 03:19:43,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:19:43,866 INFO L225 Difference]: With dead ends: 303 [2021-12-16 03:19:43,866 INFO L226 Difference]: Without dead ends: 200 [2021-12-16 03:19:43,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 221 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-16 03:19:43,868 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 2 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 593 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:19:43,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 593 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:19:43,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-12-16 03:19:43,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2021-12-16 03:19:43,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 131 states have (on average 1.1221374045801527) internal successors, (147), 134 states have internal predecessors, (147), 43 states have call successors, (43), 22 states have call predecessors, (43), 25 states have return successors, (46), 43 states have call predecessors, (46), 42 states have call successors, (46) [2021-12-16 03:19:43,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 236 transitions. [2021-12-16 03:19:43,883 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 236 transitions. Word has length 170 [2021-12-16 03:19:43,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:19:43,883 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 236 transitions. [2021-12-16 03:19:43,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (30), 2 states have call predecessors, (30), 2 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-12-16 03:19:43,884 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 236 transitions. [2021-12-16 03:19:43,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-16 03:19:43,885 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:19:43,886 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:19:43,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-16 03:19:44,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:19:44,104 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:19:44,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:19:44,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1876676692, now seen corresponding path program 1 times [2021-12-16 03:19:44,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:19:44,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [96078794] [2021-12-16 03:19:44,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:19:44,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:19:44,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:44,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:19:44,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:44,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-16 03:19:44,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:44,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-16 03:19:44,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:44,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-16 03:19:44,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:44,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-16 03:19:44,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:44,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:19:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:44,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:19:44,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:44,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 03:19:44,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:44,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:19:44,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:44,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 03:19:44,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:44,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:19:44,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:44,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-16 03:19:44,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:44,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 03:19:44,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:44,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:19:44,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:44,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 03:19:44,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:44,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-16 03:19:44,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:44,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-16 03:19:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:44,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-16 03:19:44,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:44,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-16 03:19:44,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:44,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-16 03:19:44,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:44,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-16 03:19:44,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:44,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-16 03:19:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:44,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 03:19:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:44,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 03:19:44,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:44,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-16 03:19:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:44,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-16 03:19:44,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:44,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-16 03:19:44,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:44,712 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 8 proven. 21 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2021-12-16 03:19:44,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:19:44,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [96078794] [2021-12-16 03:19:44,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [96078794] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:19:44,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937101076] [2021-12-16 03:19:44,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:19:44,713 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:19:44,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:19:44,714 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:19:44,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-16 03:19:45,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:19:45,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 2496 conjuncts, 63 conjunts are in the unsatisfiable core [2021-12-16 03:19:45,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:19:45,537 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-12-16 03:19:45,537 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:19:45,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937101076] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:19:45,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:19:45,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 12 [2021-12-16 03:19:45,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771827621] [2021-12-16 03:19:45,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:19:45,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 03:19:45,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:19:45,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 03:19:45,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-12-16 03:19:45,539 INFO L87 Difference]: Start difference. First operand 200 states and 236 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 4 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-16 03:19:45,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:19:45,669 INFO L93 Difference]: Finished difference Result 353 states and 416 transitions. [2021-12-16 03:19:45,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:19:45,669 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 4 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 175 [2021-12-16 03:19:45,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:19:45,671 INFO L225 Difference]: With dead ends: 353 [2021-12-16 03:19:45,671 INFO L226 Difference]: Without dead ends: 200 [2021-12-16 03:19:45,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 222 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2021-12-16 03:19:45,672 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 25 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:19:45,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 877 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:19:45,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-12-16 03:19:45,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 195. [2021-12-16 03:19:45,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 127 states have (on average 1.110236220472441) internal successors, (141), 130 states have internal predecessors, (141), 43 states have call successors, (43), 22 states have call predecessors, (43), 24 states have return successors, (45), 42 states have call predecessors, (45), 42 states have call successors, (45) [2021-12-16 03:19:45,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 229 transitions. [2021-12-16 03:19:45,683 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 229 transitions. Word has length 175 [2021-12-16 03:19:45,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:19:45,684 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 229 transitions. [2021-12-16 03:19:45,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 4 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2021-12-16 03:19:45,684 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 229 transitions. [2021-12-16 03:19:45,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-12-16 03:19:45,686 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:19:45,686 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:19:45,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-16 03:19:45,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-12-16 03:19:45,912 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:19:45,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:19:45,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1609010081, now seen corresponding path program 1 times [2021-12-16 03:19:45,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:19:45,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612603676] [2021-12-16 03:19:45,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:19:45,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:19:45,970 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-16 03:19:45,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1679708557] [2021-12-16 03:19:45,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:19:45,974 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:19:45,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:19:45,975 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 03:19:46,006 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process