./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 f4b24e32 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-?-f4b24e3 [2022-07-13 22:47:38,073 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:47:38,074 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:47:38,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:47:38,126 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:47:38,127 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:47:38,129 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:47:38,131 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:47:38,132 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:47:38,136 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:47:38,137 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:47:38,138 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:47:38,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:47:38,141 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:47:38,142 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:47:38,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:47:38,144 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:47:38,145 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:47:38,147 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:47:38,152 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:47:38,153 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:47:38,154 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:47:38,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:47:38,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:47:38,155 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:47:38,157 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:47:38,157 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:47:38,157 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:47:38,159 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:47:38,159 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:47:38,160 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:47:38,160 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:47:38,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:47:38,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:47:38,163 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:47:38,164 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:47:38,164 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:47:38,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:47:38,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:47:38,165 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:47:38,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:47:38,166 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:47:38,167 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-13 22:47:38,190 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:47:38,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:47:38,196 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:47:38,196 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:47:38,197 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:47:38,197 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:47:38,198 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:47:38,198 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:47:38,198 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:47:38,199 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:47:38,199 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:47:38,199 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:47:38,199 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:47:38,199 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:47:38,199 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:47:38,200 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:47:38,200 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:47:38,200 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:47:38,201 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:47:38,201 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:47:38,201 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:47:38,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:47:38,202 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:47:38,202 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:47:38,202 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:47:38,202 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:47:38,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:47:38,203 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:47:38,203 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:47:38,203 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:47:38,203 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 76206b4f7fb4016a4087a30dbd51e90ef533ed916c2eae20331e23ac9a9e91be [2022-07-13 22:47:38,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:47:38,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:47:38,384 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:47:38,385 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:47:38,385 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:47:38,386 INFO L432 ainManager$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 [2022-07-13 22:47:38,438 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a03fc1ac/15dcf7f7038c4084bea240712eb0701e/FLAGc280866b3 [2022-07-13 22:47:38,983 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:47:38,984 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_clear_harness.i [2022-07-13 22:47:39,014 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a03fc1ac/15dcf7f7038c4084bea240712eb0701e/FLAGc280866b3 [2022-07-13 22:47:39,175 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a03fc1ac/15dcf7f7038c4084bea240712eb0701e [2022-07-13 22:47:39,178 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:47:39,179 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:47:39,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:47:39,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:47:39,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:47:39,184 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:47:39" (1/1) ... [2022-07-13 22:47:39,185 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b3dcce2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:47:39, skipping insertion in model container [2022-07-13 22:47:39,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:47:39" (1/1) ... [2022-07-13 22:47:39,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:47:39,265 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:47:39,469 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] [2022-07-13 22:47:39,474 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] [2022-07-13 22:47:40,039 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,043 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,043 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,044 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,044 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,051 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,051 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,052 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,053 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,054 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,054 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,055 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,055 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,286 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-13 22:47:40,287 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-13 22:47:40,288 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-13 22:47:40,288 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-13 22:47:40,289 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-13 22:47:40,290 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-13 22:47:40,290 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-13 22:47:40,290 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-13 22:47:40,295 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-13 22:47:40,296 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-13 22:47:40,402 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-13 22:47:40,657 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,658 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,680 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,681 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,686 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,686 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,698 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,698 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,699 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,700 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,700 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,700 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,700 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,728 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:47:40,760 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:47:40,777 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] [2022-07-13 22:47:40,777 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] [2022-07-13 22:47:40,819 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,820 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,821 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,821 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,821 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,826 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,827 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,828 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,828 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,829 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,829 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,830 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,830 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,849 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-13 22:47:40,849 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-13 22:47:40,850 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-13 22:47:40,850 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-13 22:47:40,851 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-13 22:47:40,851 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-13 22:47:40,851 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-13 22:47:40,852 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-13 22:47:40,852 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-13 22:47:40,852 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-13 22:47:40,872 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-13 22:47:40,951 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,952 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,956 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,956 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,958 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,958 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,967 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,967 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,968 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,968 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,968 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,969 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,969 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-13 22:47:40,980 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:47:41,153 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:47:41,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:47:41 WrapperNode [2022-07-13 22:47:41,153 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:47:41,154 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:47:41,155 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:47:41,155 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:47:41,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:47:41" (1/1) ... [2022-07-13 22:47:41,228 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:47:41" (1/1) ... [2022-07-13 22:47:41,283 INFO L137 Inliner]: procedures = 775, calls = 2440, calls flagged for inlining = 68, calls inlined = 13, statements flattened = 620 [2022-07-13 22:47:41,283 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:47:41,285 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:47:41,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:47:41,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:47:41,291 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:47:41" (1/1) ... [2022-07-13 22:47:41,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:47:41" (1/1) ... [2022-07-13 22:47:41,301 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:47:41" (1/1) ... [2022-07-13 22:47:41,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:47:41" (1/1) ... [2022-07-13 22:47:41,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:47:41" (1/1) ... [2022-07-13 22:47:41,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:47:41" (1/1) ... [2022-07-13 22:47:41,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:47:41" (1/1) ... [2022-07-13 22:47:41,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:47:41,379 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:47:41,379 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:47:41,379 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:47:41,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:47:41" (1/1) ... [2022-07-13 22:47:41,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:47:41,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:47:41,412 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) [2022-07-13 22:47:41,431 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 [2022-07-13 22:47:41,441 INFO L130 BoogieDeclarations]: Found specification of procedure memset_override_0_impl [2022-07-13 22:47:41,442 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_override_0_impl [2022-07-13 22:47:41,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-07-13 22:47:41,442 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-13 22:47:41,442 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-13 22:47:41,442 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:47:41,442 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-13 22:47:41,443 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-13 22:47:41,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-13 22:47:41,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-13 22:47:41,443 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2022-07-13 22:47:41,444 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2022-07-13 22:47:41,444 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_clear [2022-07-13 22:47:41,444 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_clear [2022-07-13 22:47:41,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 22:47:41,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:47:41,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 22:47:41,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:47:41,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:47:41,445 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-13 22:47:41,445 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-13 22:47:41,445 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-13 22:47:41,445 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-13 22:47:41,445 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:47:41,445 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2022-07-13 22:47:41,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2022-07-13 22:47:41,445 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 22:47:41,445 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-13 22:47:41,446 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-13 22:47:41,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:47:41,446 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2022-07-13 22:47:41,446 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2022-07-13 22:47:41,446 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2022-07-13 22:47:41,446 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2022-07-13 22:47:41,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:47:41,446 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2022-07-13 22:47:41,447 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2022-07-13 22:47:41,447 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-13 22:47:41,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-13 22:47:41,447 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-13 22:47:41,447 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-13 22:47:41,448 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2022-07-13 22:47:41,448 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2022-07-13 22:47:41,450 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-13 22:47:41,450 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-13 22:47:41,450 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-13 22:47:41,450 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2022-07-13 22:47:41,451 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2022-07-13 22:47:41,451 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:47:41,692 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:47:41,693 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:47:42,269 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:47:42,281 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:47:42,282 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-13 22:47:42,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:47:42 BoogieIcfgContainer [2022-07-13 22:47:42,284 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:47:42,285 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:47:42,285 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:47:42,287 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:47:42,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:47:39" (1/3) ... [2022-07-13 22:47:42,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1975d569 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:47:42, skipping insertion in model container [2022-07-13 22:47:42,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:47:41" (2/3) ... [2022-07-13 22:47:42,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1975d569 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:47:42, skipping insertion in model container [2022-07-13 22:47:42,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:47:42" (3/3) ... [2022-07-13 22:47:42,289 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_clear_harness.i [2022-07-13 22:47:42,304 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:47:42,304 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:47:42,357 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:47:42,365 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3c4c0208, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7a544c77 [2022-07-13 22:47:42,365 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 22:47:42,368 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) [2022-07-13 22:47:42,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-13 22:47:42,379 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:47:42,380 INFO L195 NwaCegarLoop]: 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] [2022-07-13 22:47:42,381 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:47:42,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:47:42,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1492385641, now seen corresponding path program 1 times [2022-07-13 22:47:42,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:47:42,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056311013] [2022-07-13 22:47:42,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:47:42,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:47:42,675 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:47:42,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1570729432] [2022-07-13 22:47:42,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:47:42,688 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:47:42,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:47:42,689 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) [2022-07-13 22:47:42,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 22:47:43,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:43,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 2368 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 22:47:43,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:47:43,220 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2022-07-13 22:47:43,220 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:47:43,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:47:43,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056311013] [2022-07-13 22:47:43,221 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:47:43,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570729432] [2022-07-13 22:47:43,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570729432] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:47:43,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:47:43,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 22:47:43,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098551966] [2022-07-13 22:47:43,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:47:43,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 22:47:43,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:47:43,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 22:47:43,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 22:47:43,245 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) [2022-07-13 22:47:43,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:47:43,278 INFO L93 Difference]: Finished difference Result 338 states and 443 transitions. [2022-07-13 22:47:43,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 22:47:43,280 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 [2022-07-13 22:47:43,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:47:43,287 INFO L225 Difference]: With dead ends: 338 [2022-07-13 22:47:43,287 INFO L226 Difference]: Without dead ends: 165 [2022-07-13 22:47:43,290 INFO L412 NwaCegarLoop]: 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 [2022-07-13 22:47:43,292 INFO L413 NwaCegarLoop]: 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 [2022-07-13 22:47:43,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 414 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:47:43,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-07-13 22:47:43,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2022-07-13 22:47:43,327 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) [2022-07-13 22:47:43,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 203 transitions. [2022-07-13 22:47:43,332 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 203 transitions. Word has length 141 [2022-07-13 22:47:43,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:47:43,334 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 203 transitions. [2022-07-13 22:47:43,334 INFO L496 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) [2022-07-13 22:47:43,334 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 203 transitions. [2022-07-13 22:47:43,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-13 22:47:43,337 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:47:43,337 INFO L195 NwaCegarLoop]: 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] [2022-07-13 22:47:43,357 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-13 22:47:43,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-13 22:47:43,567 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:47:43,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:47:43,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1781513301, now seen corresponding path program 1 times [2022-07-13 22:47:43,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:47:43,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059431223] [2022-07-13 22:47:43,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:47:43,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:47:43,677 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:47:43,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1481620064] [2022-07-13 22:47:43,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:47:43,678 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:47:43,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:47:43,679 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) [2022-07-13 22:47:43,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 22:47:44,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:44,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 2373 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-13 22:47:44,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:47:44,106 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-07-13 22:47:44,106 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:47:44,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:47:44,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059431223] [2022-07-13 22:47:44,107 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-13 22:47:44,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481620064] [2022-07-13 22:47:44,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481620064] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:47:44,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:47:44,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 22:47:44,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035197350] [2022-07-13 22:47:44,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:47:44,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 22:47:44,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:47:44,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 22:47:44,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 22:47:44,112 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) [2022-07-13 22:47:44,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:47:44,149 INFO L93 Difference]: Finished difference Result 293 states and 361 transitions. [2022-07-13 22:47:44,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 22:47:44,150 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 [2022-07-13 22:47:44,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:47:44,151 INFO L225 Difference]: With dead ends: 293 [2022-07-13 22:47:44,151 INFO L226 Difference]: Without dead ends: 170 [2022-07-13 22:47:44,152 INFO L412 NwaCegarLoop]: 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 [2022-07-13 22:47:44,153 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 2 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 22:47:44,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 791 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 22:47:44,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-07-13 22:47:44,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2022-07-13 22:47:44,162 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) [2022-07-13 22:47:44,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 208 transitions. [2022-07-13 22:47:44,163 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 208 transitions. Word has length 141 [2022-07-13 22:47:44,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:47:44,164 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 208 transitions. [2022-07-13 22:47:44,164 INFO L496 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) [2022-07-13 22:47:44,164 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 208 transitions. [2022-07-13 22:47:44,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-13 22:47:44,166 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:47:44,166 INFO L195 NwaCegarLoop]: 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] [2022-07-13 22:47:44,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 22:47:44,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-07-13 22:47:44,382 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:47:44,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:47:44,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1672801995, now seen corresponding path program 1 times [2022-07-13 22:47:44,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:47:44,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861361513] [2022-07-13 22:47:44,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:47:44,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:47:44,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:44,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:47:44,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:44,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 22:47:44,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:44,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 22:47:44,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:44,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:47:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:44,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 22:47:44,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:44,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:47:44,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:44,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:47:44,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:44,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:47:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:44,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:47:44,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:44,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:47:44,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:44,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:47:44,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:44,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 22:47:44,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:44,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 22:47:44,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:44,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:47:44,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:44,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 22:47:44,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:44,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 22:47:44,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:44,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 22:47:44,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:44,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 22:47:44,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:44,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 22:47:44,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:44,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-13 22:47:44,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:44,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 22:47:44,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:44,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-13 22:47:44,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:44,981 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2022-07-13 22:47:44,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:47:44,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861361513] [2022-07-13 22:47:44,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1861361513] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:47:44,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826799725] [2022-07-13 22:47:44,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:47:44,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:47:44,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:47:44,984 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) [2022-07-13 22:47:44,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 22:47:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:45,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 2377 conjuncts, 36 conjunts are in the unsatisfiable core [2022-07-13 22:47:45,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:47:45,474 INFO L390 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 [2022-07-13 22:47:45,655 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-07-13 22:47:45,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:47:45,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826799725] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:47:45,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:47:45,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [13] total 21 [2022-07-13 22:47:45,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002121808] [2022-07-13 22:47:45,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:47:45,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 22:47:45,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:47:45,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 22:47:45,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2022-07-13 22:47:45,658 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) [2022-07-13 22:47:45,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:47:45,747 INFO L93 Difference]: Finished difference Result 291 states and 358 transitions. [2022-07-13 22:47:45,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 22:47:45,748 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 [2022-07-13 22:47:45,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:47:45,750 INFO L225 Difference]: With dead ends: 291 [2022-07-13 22:47:45,750 INFO L226 Difference]: Without dead ends: 179 [2022-07-13 22:47:45,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2022-07-13 22:47:45,752 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 19 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 36 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:47:45,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 1120 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 36 Unchecked, 0.1s Time] [2022-07-13 22:47:45,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-07-13 22:47:45,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2022-07-13 22:47:45,761 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) [2022-07-13 22:47:45,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 219 transitions. [2022-07-13 22:47:45,762 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 219 transitions. Word has length 147 [2022-07-13 22:47:45,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:47:45,762 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 219 transitions. [2022-07-13 22:47:45,763 INFO L496 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) [2022-07-13 22:47:45,763 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 219 transitions. [2022-07-13 22:47:45,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-13 22:47:45,764 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:47:45,764 INFO L195 NwaCegarLoop]: 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] [2022-07-13 22:47:45,784 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-13 22:47:45,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:47:45,986 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:47:45,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:47:45,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1055407351, now seen corresponding path program 1 times [2022-07-13 22:47:45,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:47:45,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379765620] [2022-07-13 22:47:45,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:47:45,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:47:46,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:46,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:47:46,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:46,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 22:47:46,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:46,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 22:47:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:46,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:47:46,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:46,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 22:47:46,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:46,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:47:46,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:46,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:47:46,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:46,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:47:46,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:46,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:47:46,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:46,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:47:46,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:46,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:47:46,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:46,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 22:47:46,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:46,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 22:47:46,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:46,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:47:46,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:46,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 22:47:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:46,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 22:47:46,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:46,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 22:47:46,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:46,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 22:47:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:46,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 22:47:46,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:46,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-13 22:47:46,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:46,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 22:47:46,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:46,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-13 22:47:46,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:46,363 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2022-07-13 22:47:46,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:47:46,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379765620] [2022-07-13 22:47:46,364 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379765620] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:47:46,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970179378] [2022-07-13 22:47:46,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:47:46,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:47:46,365 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:47:46,368 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) [2022-07-13 22:47:46,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 22:47:46,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:46,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 2372 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 22:47:46,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:47:46,790 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-07-13 22:47:46,791 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:47:46,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970179378] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:47:46,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:47:46,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-07-13 22:47:46,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043017599] [2022-07-13 22:47:46,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:47:46,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 22:47:46,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:47:46,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 22:47:46,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-13 22:47:46,793 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) [2022-07-13 22:47:46,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:47:46,916 INFO L93 Difference]: Finished difference Result 295 states and 366 transitions. [2022-07-13 22:47:46,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 22:47:46,916 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 [2022-07-13 22:47:46,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:47:46,918 INFO L225 Difference]: With dead ends: 295 [2022-07-13 22:47:46,918 INFO L226 Difference]: Without dead ends: 181 [2022-07-13 22:47:46,919 INFO L412 NwaCegarLoop]: 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 [2022-07-13 22:47:46,919 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 209 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:47:46,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 655 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 22:47:46,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-07-13 22:47:46,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2022-07-13 22:47:46,928 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) [2022-07-13 22:47:46,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 222 transitions. [2022-07-13 22:47:46,929 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 222 transitions. Word has length 147 [2022-07-13 22:47:46,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:47:46,929 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 222 transitions. [2022-07-13 22:47:46,929 INFO L496 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) [2022-07-13 22:47:46,929 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 222 transitions. [2022-07-13 22:47:46,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-13 22:47:46,931 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:47:46,931 INFO L195 NwaCegarLoop]: 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] [2022-07-13 22:47:46,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-13 22:47:47,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:47:47,145 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:47:47,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:47:47,145 INFO L85 PathProgramCache]: Analyzing trace with hash 648263323, now seen corresponding path program 1 times [2022-07-13 22:47:47,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:47:47,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210171559] [2022-07-13 22:47:47,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:47:47,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:47:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:47,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:47:47,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:47,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 22:47:47,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:47,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 22:47:47,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:47,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:47:47,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:47,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 22:47:47,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:47,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:47:47,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:47,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:47:47,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:47,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:47:47,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:47,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:47:47,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:47,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:47:47,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:47,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:47:47,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:47,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 22:47:47,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:47,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 22:47:47,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:47,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 22:47:47,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:47,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 22:47:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:47,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 22:47:47,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:47,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 22:47:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:47,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 22:47:47,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:47,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-13 22:47:47,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:47,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 22:47:47,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:47,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 22:47:47,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:47,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 22:47:47,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:47,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-13 22:47:47,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:47,534 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2022-07-13 22:47:47,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:47:47,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210171559] [2022-07-13 22:47:47,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210171559] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:47:47,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154115250] [2022-07-13 22:47:47,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:47:47,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:47:47,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:47:47,537 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) [2022-07-13 22:47:47,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 22:47:47,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:47,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 2401 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-13 22:47:47,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:47:48,731 WARN L855 $PredicateComparison]: unable to prove that (or (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= 0 (select (select |c_#memory_$Pointer$.offset| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset)))) (exists ((aws_hash_table_is_valid_~map.base Int) (aws_hash_table_is_valid_~map.offset Int)) (not (= (select (select |c_#memory_$Pointer$.base| aws_hash_table_is_valid_~map.base) aws_hash_table_is_valid_~map.offset) 0)))) is different from true [2022-07-13 22:47:54,498 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-13 22:47:54,498 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:47:54,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154115250] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:47:54,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:47:54,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-07-13 22:47:54,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753900400] [2022-07-13 22:47:54,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:47:54,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 22:47:54,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:47:54,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 22:47:54,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=175, Unknown=3, NotChecked=26, Total=240 [2022-07-13 22:47:54,500 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) [2022-07-13 22:47:54,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:47:54,638 INFO L93 Difference]: Finished difference Result 302 states and 378 transitions. [2022-07-13 22:47:54,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 22:47:54,638 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 [2022-07-13 22:47:54,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:47:54,639 INFO L225 Difference]: With dead ends: 302 [2022-07-13 22:47:54,640 INFO L226 Difference]: Without dead ends: 184 [2022-07-13 22:47:54,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=51, Invalid=222, Unknown=3, NotChecked=30, Total=306 [2022-07-13 22:47:54,641 INFO L413 NwaCegarLoop]: 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 [2022-07-13 22:47:54,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 1074 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 292 Unchecked, 0.1s Time] [2022-07-13 22:47:54,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2022-07-13 22:47:54,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 183. [2022-07-13 22:47:54,672 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) [2022-07-13 22:47:54,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 224 transitions. [2022-07-13 22:47:54,673 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 224 transitions. Word has length 153 [2022-07-13 22:47:54,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:47:54,673 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 224 transitions. [2022-07-13 22:47:54,673 INFO L496 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) [2022-07-13 22:47:54,673 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 224 transitions. [2022-07-13 22:47:54,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-07-13 22:47:54,674 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:47:54,674 INFO L195 NwaCegarLoop]: 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] [2022-07-13 22:47:54,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 22:47:54,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:47:54,875 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:47:54,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:47:54,876 INFO L85 PathProgramCache]: Analyzing trace with hash -972908871, now seen corresponding path program 1 times [2022-07-13 22:47:54,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:47:54,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568014608] [2022-07-13 22:47:54,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:47:54,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:47:55,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:55,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:47:55,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:55,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 22:47:55,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:55,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 22:47:55,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:55,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:47:55,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:55,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 22:47:55,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:55,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:47:55,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:55,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:47:55,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:55,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:47:55,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:55,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:47:55,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:55,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:47:55,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:55,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:47:55,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:55,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 22:47:55,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:55,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 22:47:55,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:55,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:47:55,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:55,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 22:47:55,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:55,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 22:47:55,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:55,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 22:47:55,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:55,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 22:47:55,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:55,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-13 22:47:55,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:55,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 22:47:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:55,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 22:47:55,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:55,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-13 22:47:55,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:55,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-13 22:47:55,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:55,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-13 22:47:55,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:55,355 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2022-07-13 22:47:55,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:47:55,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568014608] [2022-07-13 22:47:55,356 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568014608] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:47:55,356 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:47:55,356 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-13 22:47:55,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503032485] [2022-07-13 22:47:55,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:47:55,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 22:47:55,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:47:55,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 22:47:55,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-13 22:47:55,357 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) [2022-07-13 22:47:56,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:47:56,049 INFO L93 Difference]: Finished difference Result 205 states and 249 transitions. [2022-07-13 22:47:56,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 22:47:56,049 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 [2022-07-13 22:47:56,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:47:56,051 INFO L225 Difference]: With dead ends: 205 [2022-07-13 22:47:56,051 INFO L226 Difference]: Without dead ends: 203 [2022-07-13 22:47:56,051 INFO L412 NwaCegarLoop]: 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 [2022-07-13 22:47:56,052 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 141 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 1003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 22:47:56,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 732 Invalid, 1003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 923 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 22:47:56,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-07-13 22:47:56,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 187. [2022-07-13 22:47:56,060 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) [2022-07-13 22:47:56,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 227 transitions. [2022-07-13 22:47:56,061 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 227 transitions. Word has length 158 [2022-07-13 22:47:56,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:47:56,062 INFO L495 AbstractCegarLoop]: Abstraction has 187 states and 227 transitions. [2022-07-13 22:47:56,062 INFO L496 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) [2022-07-13 22:47:56,062 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 227 transitions. [2022-07-13 22:47:56,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-13 22:47:56,063 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:47:56,063 INFO L195 NwaCegarLoop]: 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] [2022-07-13 22:47:56,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 22:47:56,064 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:47:56,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:47:56,064 INFO L85 PathProgramCache]: Analyzing trace with hash 1485215646, now seen corresponding path program 1 times [2022-07-13 22:47:56,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:47:56,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073912943] [2022-07-13 22:47:56,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:47:56,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:47:56,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:56,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:47:56,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:56,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 22:47:56,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:56,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 22:47:56,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:56,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:47:56,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:56,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 22:47:56,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:56,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:47:56,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:56,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:47:56,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:56,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:47:56,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:56,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:47:56,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:56,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:47:56,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:56,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:47:56,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:56,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 22:47:56,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:56,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 22:47:56,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:56,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:47:56,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:56,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 22:47:56,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:56,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 22:47:56,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:56,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 22:47:56,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:56,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 22:47:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:56,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-13 22:47:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:56,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 22:47:56,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:56,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 22:47:56,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:57,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-13 22:47:57,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:57,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-13 22:47:57,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:57,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-13 22:47:57,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:57,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-13 22:47:57,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:57,117 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-07-13 22:47:57,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:47:57,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073912943] [2022-07-13 22:47:57,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073912943] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:47:57,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:47:57,117 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2022-07-13 22:47:57,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983064694] [2022-07-13 22:47:57,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:47:57,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-13 22:47:57,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:47:57,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-13 22:47:57,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=579, Unknown=0, NotChecked=0, Total=650 [2022-07-13 22:47:57,120 INFO L87 Difference]: Start difference. First operand 187 states and 227 transitions. Second operand has 26 states, 23 states have (on average 3.347826086956522) internal successors, (77), 21 states have internal predecessors, (77), 13 states have call successors, (29), 6 states have call predecessors, (29), 5 states have return successors, (25), 12 states have call predecessors, (25), 13 states have call successors, (25) [2022-07-13 22:47:58,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:47:58,829 INFO L93 Difference]: Finished difference Result 303 states and 367 transitions. [2022-07-13 22:47:58,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-13 22:47:58,830 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 3.347826086956522) internal successors, (77), 21 states have internal predecessors, (77), 13 states have call successors, (29), 6 states have call predecessors, (29), 5 states have return successors, (25), 12 states have call predecessors, (25), 13 states have call successors, (25) Word has length 164 [2022-07-13 22:47:58,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:47:58,831 INFO L225 Difference]: With dead ends: 303 [2022-07-13 22:47:58,831 INFO L226 Difference]: Without dead ends: 206 [2022-07-13 22:47:58,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=220, Invalid=1502, Unknown=0, NotChecked=0, Total=1722 [2022-07-13 22:47:58,832 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 460 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 2332 mSolverCounterSat, 335 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 471 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 2667 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 335 IncrementalHoareTripleChecker+Valid, 2332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 22:47:58,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [471 Valid, 688 Invalid, 2667 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [335 Valid, 2332 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 22:47:58,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-07-13 22:47:58,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 190. [2022-07-13 22:47:58,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190 states, 125 states have (on average 1.144) internal successors, (143), 126 states have internal predecessors, (143), 42 states have call successors, (42), 21 states have call predecessors, (42), 22 states have return successors, (46), 42 states have call predecessors, (46), 41 states have call successors, (46) [2022-07-13 22:47:58,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 231 transitions. [2022-07-13 22:47:58,849 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 231 transitions. Word has length 164 [2022-07-13 22:47:58,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:47:58,850 INFO L495 AbstractCegarLoop]: Abstraction has 190 states and 231 transitions. [2022-07-13 22:47:58,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 3.347826086956522) internal successors, (77), 21 states have internal predecessors, (77), 13 states have call successors, (29), 6 states have call predecessors, (29), 5 states have return successors, (25), 12 states have call predecessors, (25), 13 states have call successors, (25) [2022-07-13 22:47:58,850 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 231 transitions. [2022-07-13 22:47:58,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-07-13 22:47:58,852 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:47:58,852 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1] [2022-07-13 22:47:58,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 22:47:58,853 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:47:58,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:47:58,853 INFO L85 PathProgramCache]: Analyzing trace with hash -758767652, now seen corresponding path program 1 times [2022-07-13 22:47:58,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:47:58,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262987982] [2022-07-13 22:47:58,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:47:58,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:47:58,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:59,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:47:59,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:59,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 22:47:59,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:59,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 22:47:59,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:59,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:47:59,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:59,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 22:47:59,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:59,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:47:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:59,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:47:59,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:59,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:47:59,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:59,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:47:59,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:59,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:47:59,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:59,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:47:59,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:59,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 22:47:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:59,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 22:47:59,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:59,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:47:59,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:59,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 22:47:59,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:59,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 22:47:59,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:59,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 22:47:59,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:59,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 22:47:59,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:59,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-13 22:47:59,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:59,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 22:47:59,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:59,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 22:47:59,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:59,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-13 22:47:59,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:59,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-13 22:47:59,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:59,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-13 22:47:59,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:59,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-13 22:47:59,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:47:59,244 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2022-07-13 22:47:59,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:47:59,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262987982] [2022-07-13 22:47:59,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262987982] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:47:59,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:47:59,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:47:59,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857455025] [2022-07-13 22:47:59,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:47:59,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:47:59,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:47:59,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:47:59,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:47:59,246 INFO L87 Difference]: Start difference. First operand 190 states and 231 transitions. Second operand has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 4 states have call successors, (29), 6 states have call predecessors, (29), 2 states have return successors, (25), 3 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-13 22:47:59,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:47:59,821 INFO L93 Difference]: Finished difference Result 306 states and 370 transitions. [2022-07-13 22:47:59,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 22:47:59,821 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 4 states have call successors, (29), 6 states have call predecessors, (29), 2 states have return successors, (25), 3 states have call predecessors, (25), 4 states have call successors, (25) Word has length 164 [2022-07-13 22:47:59,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:47:59,822 INFO L225 Difference]: With dead ends: 306 [2022-07-13 22:47:59,822 INFO L226 Difference]: Without dead ends: 197 [2022-07-13 22:47:59,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2022-07-13 22:47:59,823 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 160 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 804 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 804 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 22:47:59,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [171 Valid, 602 Invalid, 896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 804 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 22:47:59,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-07-13 22:47:59,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 181. [2022-07-13 22:47:59,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 118 states have (on average 1.1271186440677967) internal successors, (133), 119 states have internal predecessors, (133), 41 states have call successors, (41), 20 states have call predecessors, (41), 21 states have return successors, (43), 41 states have call predecessors, (43), 40 states have call successors, (43) [2022-07-13 22:47:59,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 217 transitions. [2022-07-13 22:47:59,835 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 217 transitions. Word has length 164 [2022-07-13 22:47:59,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:47:59,835 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 217 transitions. [2022-07-13 22:47:59,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 4 states have call successors, (29), 6 states have call predecessors, (29), 2 states have return successors, (25), 3 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-13 22:47:59,836 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 217 transitions. [2022-07-13 22:47:59,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-13 22:47:59,838 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:47:59,838 INFO L195 NwaCegarLoop]: 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] [2022-07-13 22:47:59,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 22:47:59,838 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:47:59,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:47:59,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1876676692, now seen corresponding path program 1 times [2022-07-13 22:47:59,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:47:59,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582607300] [2022-07-13 22:47:59,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:47:59,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:48:00,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:48:00,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:48:00,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:48:00,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 22:48:00,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:48:00,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-13 22:48:00,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:48:00,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 22:48:00,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:48:00,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 22:48:00,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:48:00,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:48:00,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:48:00,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:48:00,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:48:00,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 22:48:00,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:48:00,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 22:48:00,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:48:00,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 22:48:00,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:48:00,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 22:48:00,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:48:00,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 22:48:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:48:00,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 22:48:00,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:48:00,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:48:00,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:48:00,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 22:48:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:48:00,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 22:48:00,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:48:00,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 22:48:00,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:48:00,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 22:48:00,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:48:00,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-13 22:48:00,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:48:00,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 22:48:00,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:48:00,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 22:48:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:48:00,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-13 22:48:00,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:48:00,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 22:48:00,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:48:00,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 22:48:00,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:48:00,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-13 22:48:00,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:48:00,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-13 22:48:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:48:00,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-13 22:48:00,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:48:00,488 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 8 proven. 21 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2022-07-13 22:48:00,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:48:00,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582607300] [2022-07-13 22:48:00,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582607300] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 22:48:00,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131127199] [2022-07-13 22:48:00,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:48:00,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:48:00,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:48:00,490 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) [2022-07-13 22:48:00,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 22:48:00,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:48:00,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 2498 conjuncts, 63 conjunts are in the unsatisfiable core [2022-07-13 22:48:00,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 22:48:01,010 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-07-13 22:48:01,010 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 22:48:01,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131127199] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:48:01,011 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 22:48:01,011 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 12 [2022-07-13 22:48:01,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600181177] [2022-07-13 22:48:01,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:48:01,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 22:48:01,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:48:01,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 22:48:01,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-07-13 22:48:01,013 INFO L87 Difference]: Start difference. First operand 181 states and 217 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) [2022-07-13 22:48:01,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 22:48:01,136 INFO L93 Difference]: Finished difference Result 315 states and 378 transitions. [2022-07-13 22:48:01,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 22:48:01,137 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 [2022-07-13 22:48:01,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 22:48:01,138 INFO L225 Difference]: With dead ends: 315 [2022-07-13 22:48:01,138 INFO L226 Difference]: Without dead ends: 181 [2022-07-13 22:48:01,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-07-13 22:48:01,139 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 25 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 22:48:01,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 857 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 22:48:01,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2022-07-13 22:48:01,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 176. [2022-07-13 22:48:01,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 114 states have (on average 1.1140350877192982) internal successors, (127), 115 states have internal predecessors, (127), 41 states have call successors, (41), 20 states have call predecessors, (41), 20 states have return successors, (42), 40 states have call predecessors, (42), 40 states have call successors, (42) [2022-07-13 22:48:01,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 210 transitions. [2022-07-13 22:48:01,149 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 210 transitions. Word has length 175 [2022-07-13 22:48:01,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 22:48:01,149 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 210 transitions. [2022-07-13 22:48:01,150 INFO L496 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) [2022-07-13 22:48:01,150 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 210 transitions. [2022-07-13 22:48:01,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-07-13 22:48:01,151 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 22:48:01,152 INFO L195 NwaCegarLoop]: 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] [2022-07-13 22:48:01,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 22:48:01,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:48:01,372 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 22:48:01,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:48:01,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1609010081, now seen corresponding path program 1 times [2022-07-13 22:48:01,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:48:01,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298945021] [2022-07-13 22:48:01,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:48:01,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:48:01,418 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-13 22:48:01,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1713405124] [2022-07-13 22:48:01,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:48:01,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 22:48:01,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:48:01,432 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) [2022-07-13 22:48:01,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process