/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 11:44:59,538 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 11:44:59,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 11:44:59,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 11:44:59,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 11:44:59,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 11:44:59,581 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 11:44:59,583 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 11:44:59,586 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 11:44:59,587 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 11:44:59,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 11:44:59,593 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 11:44:59,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 11:44:59,595 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 11:44:59,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 11:44:59,601 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 11:44:59,605 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 11:44:59,620 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 11:44:59,625 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 11:44:59,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 11:44:59,635 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 11:44:59,639 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 11:44:59,640 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 11:44:59,641 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 11:44:59,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 11:44:59,645 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 11:44:59,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 11:44:59,646 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 11:44:59,647 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 11:44:59,648 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 11:44:59,648 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 11:44:59,649 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 11:44:59,650 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 11:44:59,651 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 11:44:59,653 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 11:44:59,653 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 11:44:59,654 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 11:44:59,654 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 11:44:59,655 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 11:44:59,656 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 11:44:59,657 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 11:44:59,658 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 11:44:59,686 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 11:44:59,687 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 11:44:59,688 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 11:44:59,689 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 11:44:59,689 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 11:44:59,689 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 11:44:59,690 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 11:44:59,690 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 11:44:59,690 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 11:44:59,690 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 11:44:59,690 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 11:44:59,691 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 11:44:59,691 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 11:44:59,691 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 11:44:59,691 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 11:44:59,692 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 11:44:59,692 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 11:44:59,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 11:44:59,692 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 11:44:59,693 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 11:44:59,693 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 11:44:59,693 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 11:44:59,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 11:44:59,693 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 11:44:59,694 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 11:44:59,694 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 11:45:00,111 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 11:45:00,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 11:45:00,163 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 11:45:00,165 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 11:45:00,166 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 11:45:00,167 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i [2020-12-22 11:45:00,277 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/329a4bf13/4108931bf3a64080bdffa32bb70d8d5b/FLAG9c47bd321 [2020-12-22 11:45:01,410 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 11:45:01,411 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_priority_queue_clean_up_harness.i [2020-12-22 11:45:01,464 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/329a4bf13/4108931bf3a64080bdffa32bb70d8d5b/FLAG9c47bd321 [2020-12-22 11:45:01,890 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/329a4bf13/4108931bf3a64080bdffa32bb70d8d5b [2020-12-22 11:45:01,893 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 11:45:01,895 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 11:45:01,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 11:45:01,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 11:45:01,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 11:45:01,902 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:45:01" (1/1) ... [2020-12-22 11:45:01,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e4b777e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:45:01, skipping insertion in model container [2020-12-22 11:45:01,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 11:45:01" (1/1) ... [2020-12-22 11:45:01,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 11:45:02,013 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 11:45:02,342 WARN L226 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_priority_queue_clean_up_harness.i[4501,4514] [2020-12-22 11:45:02,350 WARN L226 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_priority_queue_clean_up_harness.i[4561,4574] [2020-12-22 11:45:02,377 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2020-12-22 11:45:02,383 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2020-12-22 11:45:03,874 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2020-12-22 11:45:03,987 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:45:03,988 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:45:03,990 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:45:03,991 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:45:03,993 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:45:04,019 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:45:04,024 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:45:04,026 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:45:04,026 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:45:04,451 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2020-12-22 11:45:04,453 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2020-12-22 11:45:04,454 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2020-12-22 11:45:04,455 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2020-12-22 11:45:04,456 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2020-12-22 11:45:04,457 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2020-12-22 11:45:04,457 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2020-12-22 11:45:04,458 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2020-12-22 11:45:04,459 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2020-12-22 11:45:04,459 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2020-12-22 11:45:04,612 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:45:04,613 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:45:04,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:45:04,748 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 11:45:04,783 WARN L226 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_priority_queue_clean_up_harness.i[4501,4514] [2020-12-22 11:45:04,784 WARN L226 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_priority_queue_clean_up_harness.i[4561,4574] [2020-12-22 11:45:04,788 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2020-12-22 11:45:04,789 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2020-12-22 11:45:04,867 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2020-12-22 11:45:04,897 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:45:04,897 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:45:04,898 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:45:04,902 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:45:04,903 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:45:04,916 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:45:04,918 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:45:04,921 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:45:04,922 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:45:04,988 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2020-12-22 11:45:04,989 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2020-12-22 11:45:04,990 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2020-12-22 11:45:04,993 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2020-12-22 11:45:04,994 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2020-12-22 11:45:04,995 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2020-12-22 11:45:04,996 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2020-12-22 11:45:04,996 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2020-12-22 11:45:04,997 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2020-12-22 11:45:04,998 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2020-12-22 11:45:05,034 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:45:05,035 WARN L1501 CHandler]: Possible shadowing of function index [2020-12-22 11:45:05,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 11:45:05,934 INFO L208 MainTranslator]: Completed translation [2020-12-22 11:45:05,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:45:05 WrapperNode [2020-12-22 11:45:05,935 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 11:45:05,936 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 11:45:05,936 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 11:45:05,936 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 11:45:05,945 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:45:05" (1/1) ... [2020-12-22 11:45:06,052 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:45:05" (1/1) ... [2020-12-22 11:45:06,218 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 11:45:06,219 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 11:45:06,220 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 11:45:06,220 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 11:45:06,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:45:05" (1/1) ... [2020-12-22 11:45:06,236 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:45:05" (1/1) ... [2020-12-22 11:45:06,251 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:45:05" (1/1) ... [2020-12-22 11:45:06,252 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:45:05" (1/1) ... [2020-12-22 11:45:06,307 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:45:05" (1/1) ... [2020-12-22 11:45:06,319 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:45:05" (1/1) ... [2020-12-22 11:45:06,333 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:45:05" (1/1) ... [2020-12-22 11:45:06,357 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 11:45:06,358 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 11:45:06,358 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 11:45:06,360 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 11:45:06,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:45:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 11:45:06,490 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 11:45:06,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 11:45:06,490 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-22 11:45:06,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-12-22 11:45:06,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 11:45:06,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 11:45:06,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 11:45:06,491 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2020-12-22 11:45:06,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-12-22 11:45:06,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-22 11:45:06,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 11:45:06,492 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 11:45:16,524 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 11:45:16,525 INFO L299 CfgBuilder]: Removed 160 assume(true) statements. [2020-12-22 11:45:16,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:45:16 BoogieIcfgContainer [2020-12-22 11:45:16,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 11:45:16,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 11:45:16,531 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 11:45:16,535 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 11:45:16,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 11:45:01" (1/3) ... [2020-12-22 11:45:16,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67fef6cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:45:16, skipping insertion in model container [2020-12-22 11:45:16,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 11:45:05" (2/3) ... [2020-12-22 11:45:16,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67fef6cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 11:45:16, skipping insertion in model container [2020-12-22 11:45:16,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 11:45:16" (3/3) ... [2020-12-22 11:45:16,540 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_clean_up_harness.i [2020-12-22 11:45:16,549 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 11:45:16,557 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 11:45:16,583 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 11:45:16,616 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 11:45:16,617 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 11:45:16,617 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 11:45:16,617 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 11:45:16,617 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 11:45:16,617 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 11:45:16,617 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 11:45:16,617 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 11:45:16,641 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states. [2020-12-22 11:45:16,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-22 11:45:16,653 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:45:16,654 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:45:16,654 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:45:16,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:45:16,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1087609144, now seen corresponding path program 1 times [2020-12-22 11:45:16,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:45:16,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117241928] [2020-12-22 11:45:16,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:45:17,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:45:17,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:45:17,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117241928] [2020-12-22 11:45:17,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:45:17,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 11:45:17,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972604063] [2020-12-22 11:45:17,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 11:45:17,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:45:17,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 11:45:17,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 11:45:17,604 INFO L87 Difference]: Start difference. First operand 193 states. Second operand 2 states. [2020-12-22 11:45:17,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:45:17,652 INFO L93 Difference]: Finished difference Result 380 states and 549 transitions. [2020-12-22 11:45:17,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 11:45:17,654 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 45 [2020-12-22 11:45:17,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:45:17,667 INFO L225 Difference]: With dead ends: 380 [2020-12-22 11:45:17,668 INFO L226 Difference]: Without dead ends: 188 [2020-12-22 11:45:17,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 11:45:17,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-12-22 11:45:17,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2020-12-22 11:45:17,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-12-22 11:45:17,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 245 transitions. [2020-12-22 11:45:17,732 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 245 transitions. Word has length 45 [2020-12-22 11:45:17,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:45:17,733 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 245 transitions. [2020-12-22 11:45:17,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 11:45:17,733 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 245 transitions. [2020-12-22 11:45:17,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-22 11:45:17,736 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:45:17,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:45:17,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 11:45:17,737 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:45:17,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:45:17,740 INFO L82 PathProgramCache]: Analyzing trace with hash 339318222, now seen corresponding path program 1 times [2020-12-22 11:45:17,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:45:17,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18230205] [2020-12-22 11:45:17,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:45:17,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:45:18,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:45:18,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18230205] [2020-12-22 11:45:18,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:45:18,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:45:18,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142153698] [2020-12-22 11:45:18,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:45:18,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:45:18,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:45:18,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:45:18,231 INFO L87 Difference]: Start difference. First operand 188 states and 245 transitions. Second operand 4 states. [2020-12-22 11:45:18,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:45:18,343 INFO L93 Difference]: Finished difference Result 296 states and 385 transitions. [2020-12-22 11:45:18,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 11:45:18,344 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-12-22 11:45:18,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:45:18,350 INFO L225 Difference]: With dead ends: 296 [2020-12-22 11:45:18,350 INFO L226 Difference]: Without dead ends: 188 [2020-12-22 11:45:18,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:45:18,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-12-22 11:45:18,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2020-12-22 11:45:18,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-12-22 11:45:18,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 244 transitions. [2020-12-22 11:45:18,390 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 244 transitions. Word has length 51 [2020-12-22 11:45:18,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:45:18,396 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 244 transitions. [2020-12-22 11:45:18,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:45:18,396 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 244 transitions. [2020-12-22 11:45:18,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-22 11:45:18,398 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:45:18,399 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:45:18,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 11:45:18,403 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:45:18,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:45:18,404 INFO L82 PathProgramCache]: Analyzing trace with hash 168473663, now seen corresponding path program 1 times [2020-12-22 11:45:18,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:45:18,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395118505] [2020-12-22 11:45:18,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:45:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:45:18,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:45:18,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395118505] [2020-12-22 11:45:18,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:45:18,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 11:45:18,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113601232] [2020-12-22 11:45:18,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:45:18,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:45:18,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:45:18,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:45:18,867 INFO L87 Difference]: Start difference. First operand 188 states and 244 transitions. Second operand 5 states. [2020-12-22 11:45:19,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:45:19,133 INFO L93 Difference]: Finished difference Result 409 states and 532 transitions. [2020-12-22 11:45:19,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:45:19,134 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-12-22 11:45:19,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:45:19,138 INFO L225 Difference]: With dead ends: 409 [2020-12-22 11:45:19,138 INFO L226 Difference]: Without dead ends: 269 [2020-12-22 11:45:19,141 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:45:19,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2020-12-22 11:45:19,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 188. [2020-12-22 11:45:19,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-12-22 11:45:19,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 243 transitions. [2020-12-22 11:45:19,178 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 243 transitions. Word has length 55 [2020-12-22 11:45:19,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:45:19,178 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 243 transitions. [2020-12-22 11:45:19,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:45:19,179 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 243 transitions. [2020-12-22 11:45:19,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-22 11:45:19,181 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:45:19,182 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:45:19,188 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-22 11:45:19,188 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:45:19,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:45:19,189 INFO L82 PathProgramCache]: Analyzing trace with hash -795727197, now seen corresponding path program 1 times [2020-12-22 11:45:19,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:45:19,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990654200] [2020-12-22 11:45:19,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:45:19,347 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 11:45:19,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1893912875] [2020-12-22 11:45:19,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 11:45:21,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:45:21,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 2554 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-22 11:45:21,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 11:45:21,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:45:21,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990654200] [2020-12-22 11:45:21,559 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 11:45:21,559 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893912875] [2020-12-22 11:45:21,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:45:21,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 11:45:21,560 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082135095] [2020-12-22 11:45:21,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 11:45:21,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:45:21,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 11:45:21,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:45:21,562 INFO L87 Difference]: Start difference. First operand 188 states and 243 transitions. Second operand 6 states. [2020-12-22 11:45:21,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:45:21,764 INFO L93 Difference]: Finished difference Result 297 states and 384 transitions. [2020-12-22 11:45:21,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:45:21,765 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 63 [2020-12-22 11:45:21,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:45:21,768 INFO L225 Difference]: With dead ends: 297 [2020-12-22 11:45:21,769 INFO L226 Difference]: Without dead ends: 188 [2020-12-22 11:45:21,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-22 11:45:21,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-12-22 11:45:21,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2020-12-22 11:45:21,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-12-22 11:45:21,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 242 transitions. [2020-12-22 11:45:21,789 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 242 transitions. Word has length 63 [2020-12-22 11:45:21,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:45:21,792 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 242 transitions. [2020-12-22 11:45:21,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 11:45:21,792 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 242 transitions. [2020-12-22 11:45:21,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-22 11:45:21,797 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:45:21,798 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:45:22,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 11:45:22,013 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:45:22,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:45:22,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1514601710, now seen corresponding path program 1 times [2020-12-22 11:45:22,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:45:22,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142102679] [2020-12-22 11:45:22,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:45:22,131 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 11:45:22,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2046511405] [2020-12-22 11:45:22,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 11:45:24,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:45:24,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 2604 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 11:45:24,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 11:45:24,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:45:24,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142102679] [2020-12-22 11:45:24,290 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 11:45:24,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046511405] [2020-12-22 11:45:24,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:45:24,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 11:45:24,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572645645] [2020-12-22 11:45:24,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 11:45:24,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:45:24,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 11:45:24,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:45:24,293 INFO L87 Difference]: Start difference. First operand 188 states and 242 transitions. Second operand 7 states. [2020-12-22 11:45:24,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:45:24,670 INFO L93 Difference]: Finished difference Result 384 states and 496 transitions. [2020-12-22 11:45:24,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 11:45:24,671 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 75 [2020-12-22 11:45:24,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:45:24,673 INFO L225 Difference]: With dead ends: 384 [2020-12-22 11:45:24,673 INFO L226 Difference]: Without dead ends: 259 [2020-12-22 11:45:24,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-12-22 11:45:24,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-12-22 11:45:24,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 188. [2020-12-22 11:45:24,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-12-22 11:45:24,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 241 transitions. [2020-12-22 11:45:24,687 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 241 transitions. Word has length 75 [2020-12-22 11:45:24,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:45:24,687 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 241 transitions. [2020-12-22 11:45:24,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 11:45:24,687 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 241 transitions. [2020-12-22 11:45:24,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 11:45:24,688 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:45:24,689 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:45:24,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 11:45:24,904 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:45:24,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:45:24,906 INFO L82 PathProgramCache]: Analyzing trace with hash 328015662, now seen corresponding path program 1 times [2020-12-22 11:45:24,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:45:24,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190984863] [2020-12-22 11:45:24,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:45:25,019 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 11:45:25,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2118907951] [2020-12-22 11:45:25,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 11:45:26,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:45:26,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 2699 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-22 11:45:26,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 11:45:27,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:45:27,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190984863] [2020-12-22 11:45:27,235 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 11:45:27,235 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118907951] [2020-12-22 11:45:27,235 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:45:27,235 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-22 11:45:27,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44713384] [2020-12-22 11:45:27,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 11:45:27,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:45:27,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 11:45:27,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:45:27,239 INFO L87 Difference]: Start difference. First operand 188 states and 241 transitions. Second operand 7 states. [2020-12-22 11:45:28,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:45:28,009 INFO L93 Difference]: Finished difference Result 428 states and 547 transitions. [2020-12-22 11:45:28,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-22 11:45:28,010 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 83 [2020-12-22 11:45:28,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:45:28,013 INFO L225 Difference]: With dead ends: 428 [2020-12-22 11:45:28,013 INFO L226 Difference]: Without dead ends: 324 [2020-12-22 11:45:28,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-12-22 11:45:28,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-12-22 11:45:28,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 193. [2020-12-22 11:45:28,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-12-22 11:45:28,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 245 transitions. [2020-12-22 11:45:28,027 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 245 transitions. Word has length 83 [2020-12-22 11:45:28,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:45:28,028 INFO L481 AbstractCegarLoop]: Abstraction has 193 states and 245 transitions. [2020-12-22 11:45:28,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 11:45:28,028 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 245 transitions. [2020-12-22 11:45:28,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-22 11:45:28,029 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:45:28,029 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:45:28,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 11:45:28,243 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:45:28,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:45:28,244 INFO L82 PathProgramCache]: Analyzing trace with hash 329624376, now seen corresponding path program 1 times [2020-12-22 11:45:28,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:45:28,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850977052] [2020-12-22 11:45:28,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:45:28,382 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 11:45:28,382 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1127075072] [2020-12-22 11:45:28,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 11:45:30,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:45:30,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 2702 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-22 11:45:30,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 11:45:30,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:45:30,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850977052] [2020-12-22 11:45:30,522 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 11:45:30,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127075072] [2020-12-22 11:45:30,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:45:30,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:45:30,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248982967] [2020-12-22 11:45:30,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:45:30,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:45:30,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:45:30,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:45:30,525 INFO L87 Difference]: Start difference. First operand 193 states and 245 transitions. Second operand 4 states. [2020-12-22 11:45:30,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:45:30,648 INFO L93 Difference]: Finished difference Result 270 states and 340 transitions. [2020-12-22 11:45:30,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 11:45:30,649 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-12-22 11:45:30,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:45:30,651 INFO L225 Difference]: With dead ends: 270 [2020-12-22 11:45:30,651 INFO L226 Difference]: Without dead ends: 198 [2020-12-22 11:45:30,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:45:30,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-12-22 11:45:30,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 193. [2020-12-22 11:45:30,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-12-22 11:45:30,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 243 transitions. [2020-12-22 11:45:30,664 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 243 transitions. Word has length 83 [2020-12-22 11:45:30,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:45:30,664 INFO L481 AbstractCegarLoop]: Abstraction has 193 states and 243 transitions. [2020-12-22 11:45:30,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:45:30,664 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 243 transitions. [2020-12-22 11:45:30,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 11:45:30,665 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:45:30,666 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:45:30,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 11:45:30,881 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:45:30,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:45:30,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1669729280, now seen corresponding path program 1 times [2020-12-22 11:45:30,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:45:30,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537608568] [2020-12-22 11:45:30,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:45:30,988 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 11:45:30,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [228065316] [2020-12-22 11:45:30,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 11:45:32,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:45:32,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 2709 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 11:45:32,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 11:45:33,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:45:33,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537608568] [2020-12-22 11:45:33,256 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 11:45:33,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228065316] [2020-12-22 11:45:33,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:45:33,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 11:45:33,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489571547] [2020-12-22 11:45:33,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 11:45:33,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:45:33,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 11:45:33,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 11:45:33,258 INFO L87 Difference]: Start difference. First operand 193 states and 243 transitions. Second operand 8 states. [2020-12-22 11:45:34,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:45:34,033 INFO L93 Difference]: Finished difference Result 440 states and 553 transitions. [2020-12-22 11:45:34,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 11:45:34,034 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-12-22 11:45:34,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:45:34,036 INFO L225 Difference]: With dead ends: 440 [2020-12-22 11:45:34,036 INFO L226 Difference]: Without dead ends: 325 [2020-12-22 11:45:34,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2020-12-22 11:45:34,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2020-12-22 11:45:34,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 199. [2020-12-22 11:45:34,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-12-22 11:45:34,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 251 transitions. [2020-12-22 11:45:34,052 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 251 transitions. Word has length 84 [2020-12-22 11:45:34,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:45:34,052 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 251 transitions. [2020-12-22 11:45:34,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 11:45:34,053 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 251 transitions. [2020-12-22 11:45:34,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 11:45:34,054 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:45:34,054 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:45:34,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 11:45:34,269 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:45:34,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:45:34,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1253430718, now seen corresponding path program 1 times [2020-12-22 11:45:34,270 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:45:34,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586444621] [2020-12-22 11:45:34,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:45:34,381 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 11:45:34,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1349171193] [2020-12-22 11:45:34,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 11:45:36,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:45:36,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 2714 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-22 11:45:36,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 11:45:36,673 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:45:36,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:45:36,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586444621] [2020-12-22 11:45:36,848 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 11:45:36,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349171193] [2020-12-22 11:45:36,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:45:36,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 11:45:36,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884073658] [2020-12-22 11:45:36,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 11:45:36,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:45:36,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 11:45:36,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-22 11:45:36,851 INFO L87 Difference]: Start difference. First operand 199 states and 251 transitions. Second operand 6 states. [2020-12-22 11:45:43,588 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-12-22 11:45:44,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:45:44,289 INFO L93 Difference]: Finished difference Result 456 states and 578 transitions. [2020-12-22 11:45:44,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 11:45:44,291 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 84 [2020-12-22 11:45:44,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:45:44,293 INFO L225 Difference]: With dead ends: 456 [2020-12-22 11:45:44,293 INFO L226 Difference]: Without dead ends: 332 [2020-12-22 11:45:44,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 11:45:44,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-12-22 11:45:44,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 203. [2020-12-22 11:45:44,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-12-22 11:45:44,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 256 transitions. [2020-12-22 11:45:44,310 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 256 transitions. Word has length 84 [2020-12-22 11:45:44,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:45:44,310 INFO L481 AbstractCegarLoop]: Abstraction has 203 states and 256 transitions. [2020-12-22 11:45:44,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 11:45:44,310 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 256 transitions. [2020-12-22 11:45:44,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 11:45:44,312 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:45:44,312 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:45:44,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 11:45:44,526 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:45:44,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:45:44,527 INFO L82 PathProgramCache]: Analyzing trace with hash 2012177280, now seen corresponding path program 1 times [2020-12-22 11:45:44,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:45:44,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921095858] [2020-12-22 11:45:44,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:45:44,640 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 11:45:44,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1842050748] [2020-12-22 11:45:44,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 11:45:46,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:45:46,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 2711 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 11:45:46,691 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 11:45:46,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:45:46,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921095858] [2020-12-22 11:45:46,859 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 11:45:46,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842050748] [2020-12-22 11:45:46,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:45:46,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:45:46,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062898435] [2020-12-22 11:45:46,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:45:46,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:45:46,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:45:46,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:45:46,861 INFO L87 Difference]: Start difference. First operand 203 states and 256 transitions. Second operand 4 states. [2020-12-22 11:45:46,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:45:46,962 INFO L93 Difference]: Finished difference Result 335 states and 422 transitions. [2020-12-22 11:45:46,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:45:46,963 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2020-12-22 11:45:46,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:45:46,966 INFO L225 Difference]: With dead ends: 335 [2020-12-22 11:45:46,966 INFO L226 Difference]: Without dead ends: 211 [2020-12-22 11:45:46,967 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:45:46,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-12-22 11:45:46,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 207. [2020-12-22 11:45:46,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-12-22 11:45:46,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 260 transitions. [2020-12-22 11:45:46,982 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 260 transitions. Word has length 84 [2020-12-22 11:45:46,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:45:46,982 INFO L481 AbstractCegarLoop]: Abstraction has 207 states and 260 transitions. [2020-12-22 11:45:46,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:45:46,982 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 260 transitions. [2020-12-22 11:45:46,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 11:45:46,984 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:45:46,984 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:45:47,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 11:45:47,198 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:45:47,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:45:47,199 INFO L82 PathProgramCache]: Analyzing trace with hash 1617810494, now seen corresponding path program 1 times [2020-12-22 11:45:47,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:45:47,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686870754] [2020-12-22 11:45:47,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:45:47,308 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 11:45:47,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [563968050] [2020-12-22 11:45:47,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 11:45:49,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:45:49,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 2706 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-22 11:45:49,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 11:45:49,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:45:49,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686870754] [2020-12-22 11:45:49,673 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 11:45:49,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563968050] [2020-12-22 11:45:49,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:45:49,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 11:45:49,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93245429] [2020-12-22 11:45:49,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 11:45:49,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:45:49,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 11:45:49,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 11:45:49,675 INFO L87 Difference]: Start difference. First operand 207 states and 260 transitions. Second operand 8 states. [2020-12-22 11:45:50,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:45:50,764 INFO L93 Difference]: Finished difference Result 352 states and 435 transitions. [2020-12-22 11:45:50,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 11:45:50,765 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 84 [2020-12-22 11:45:50,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:45:50,767 INFO L225 Difference]: With dead ends: 352 [2020-12-22 11:45:50,768 INFO L226 Difference]: Without dead ends: 264 [2020-12-22 11:45:50,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-12-22 11:45:50,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-12-22 11:45:50,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 207. [2020-12-22 11:45:50,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-12-22 11:45:50,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 258 transitions. [2020-12-22 11:45:50,785 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 258 transitions. Word has length 84 [2020-12-22 11:45:50,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:45:50,786 INFO L481 AbstractCegarLoop]: Abstraction has 207 states and 258 transitions. [2020-12-22 11:45:50,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 11:45:50,786 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 258 transitions. [2020-12-22 11:45:50,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 11:45:50,787 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:45:50,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:45:51,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-22 11:45:51,002 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:45:51,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:45:51,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1230261128, now seen corresponding path program 1 times [2020-12-22 11:45:51,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:45:51,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268975756] [2020-12-22 11:45:51,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:45:51,113 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 11:45:51,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [244149994] [2020-12-22 11:45:51,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 11:45:53,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:45:53,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 2703 conjuncts, 40 conjunts are in the unsatisfiable core [2020-12-22 11:45:53,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 11:45:53,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:45:53,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268975756] [2020-12-22 11:45:53,660 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 11:45:53,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [244149994] [2020-12-22 11:45:53,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:45:53,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-12-22 11:45:53,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491468036] [2020-12-22 11:45:53,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 11:45:53,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:45:53,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 11:45:53,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-22 11:45:53,662 INFO L87 Difference]: Start difference. First operand 207 states and 258 transitions. Second operand 9 states. [2020-12-22 11:45:57,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:45:57,299 INFO L93 Difference]: Finished difference Result 624 states and 774 transitions. [2020-12-22 11:45:57,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 11:45:57,301 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 84 [2020-12-22 11:45:57,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:45:57,304 INFO L225 Difference]: With dead ends: 624 [2020-12-22 11:45:57,304 INFO L226 Difference]: Without dead ends: 494 [2020-12-22 11:45:57,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-12-22 11:45:57,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2020-12-22 11:45:57,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 222. [2020-12-22 11:45:57,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-12-22 11:45:57,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 277 transitions. [2020-12-22 11:45:57,327 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 277 transitions. Word has length 84 [2020-12-22 11:45:57,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:45:57,328 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 277 transitions. [2020-12-22 11:45:57,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 11:45:57,328 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 277 transitions. [2020-12-22 11:45:57,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 11:45:57,329 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:45:57,329 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:45:57,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 11:45:57,544 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:45:57,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:45:57,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1392833590, now seen corresponding path program 1 times [2020-12-22 11:45:57,545 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:45:57,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688596587] [2020-12-22 11:45:57,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:45:57,758 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 11:45:57,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [219450116] [2020-12-22 11:45:57,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 11:45:59,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:45:59,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 2708 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 11:45:59,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 11:45:59,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:45:59,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688596587] [2020-12-22 11:45:59,968 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 11:45:59,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219450116] [2020-12-22 11:45:59,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:45:59,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:45:59,968 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622724416] [2020-12-22 11:45:59,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:45:59,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:45:59,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:45:59,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:45:59,970 INFO L87 Difference]: Start difference. First operand 222 states and 277 transitions. Second operand 4 states. [2020-12-22 11:46:00,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:46:00,069 INFO L93 Difference]: Finished difference Result 348 states and 433 transitions. [2020-12-22 11:46:00,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:46:00,071 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2020-12-22 11:46:00,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:46:00,072 INFO L225 Difference]: With dead ends: 348 [2020-12-22 11:46:00,073 INFO L226 Difference]: Without dead ends: 218 [2020-12-22 11:46:00,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:46:00,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-12-22 11:46:00,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 214. [2020-12-22 11:46:00,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214 states. [2020-12-22 11:46:00,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 265 transitions. [2020-12-22 11:46:00,090 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 265 transitions. Word has length 84 [2020-12-22 11:46:00,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:46:00,091 INFO L481 AbstractCegarLoop]: Abstraction has 214 states and 265 transitions. [2020-12-22 11:46:00,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:46:00,091 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 265 transitions. [2020-12-22 11:46:00,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-22 11:46:00,092 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:46:00,092 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:46:00,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 11:46:00,294 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:46:00,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:46:00,295 INFO L82 PathProgramCache]: Analyzing trace with hash 877172746, now seen corresponding path program 1 times [2020-12-22 11:46:00,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:46:00,295 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453544610] [2020-12-22 11:46:00,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:46:00,400 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 11:46:00,401 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1299275631] [2020-12-22 11:46:00,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 11:46:02,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:46:02,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 2698 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-22 11:46:02,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 11:46:02,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:46:02,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453544610] [2020-12-22 11:46:02,511 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 11:46:02,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299275631] [2020-12-22 11:46:02,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:46:02,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 11:46:02,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270726503] [2020-12-22 11:46:02,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 11:46:02,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:46:02,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 11:46:02,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 11:46:02,513 INFO L87 Difference]: Start difference. First operand 214 states and 265 transitions. Second operand 4 states. [2020-12-22 11:46:02,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:46:02,800 INFO L93 Difference]: Finished difference Result 396 states and 494 transitions. [2020-12-22 11:46:02,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 11:46:02,802 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2020-12-22 11:46:02,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:46:02,803 INFO L225 Difference]: With dead ends: 396 [2020-12-22 11:46:02,804 INFO L226 Difference]: Without dead ends: 229 [2020-12-22 11:46:02,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:46:02,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-12-22 11:46:02,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 220. [2020-12-22 11:46:02,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-12-22 11:46:02,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 270 transitions. [2020-12-22 11:46:02,820 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 270 transitions. Word has length 84 [2020-12-22 11:46:02,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:46:02,820 INFO L481 AbstractCegarLoop]: Abstraction has 220 states and 270 transitions. [2020-12-22 11:46:02,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 11:46:02,820 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 270 transitions. [2020-12-22 11:46:02,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-22 11:46:02,821 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:46:02,821 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:46:03,034 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 11:46:03,035 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:46:03,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:46:03,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1654312400, now seen corresponding path program 1 times [2020-12-22 11:46:03,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:46:03,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510494499] [2020-12-22 11:46:03,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:46:03,147 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 11:46:03,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [767119046] [2020-12-22 11:46:03,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 11:46:05,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:46:05,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 2703 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-22 11:46:05,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 11:46:05,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:46:05,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510494499] [2020-12-22 11:46:05,486 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 11:46:05,487 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767119046] [2020-12-22 11:46:05,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:46:05,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 11:46:05,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889186039] [2020-12-22 11:46:05,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 11:46:05,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:46:05,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 11:46:05,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 11:46:05,489 INFO L87 Difference]: Start difference. First operand 220 states and 270 transitions. Second operand 5 states. [2020-12-22 11:46:11,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:46:11,000 INFO L93 Difference]: Finished difference Result 499 states and 612 transitions. [2020-12-22 11:46:11,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 11:46:11,002 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2020-12-22 11:46:11,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:46:11,004 INFO L225 Difference]: With dead ends: 499 [2020-12-22 11:46:11,004 INFO L226 Difference]: Without dead ends: 327 [2020-12-22 11:46:11,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-22 11:46:11,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2020-12-22 11:46:11,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 223. [2020-12-22 11:46:11,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-12-22 11:46:11,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 272 transitions. [2020-12-22 11:46:11,022 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 272 transitions. Word has length 86 [2020-12-22 11:46:11,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:46:11,022 INFO L481 AbstractCegarLoop]: Abstraction has 223 states and 272 transitions. [2020-12-22 11:46:11,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 11:46:11,022 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 272 transitions. [2020-12-22 11:46:11,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-22 11:46:11,023 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:46:11,024 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:46:11,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-22 11:46:11,238 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:46:11,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:46:11,239 INFO L82 PathProgramCache]: Analyzing trace with hash 273960302, now seen corresponding path program 1 times [2020-12-22 11:46:11,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:46:11,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516273408] [2020-12-22 11:46:11,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:46:11,350 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 11:46:11,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1527906889] [2020-12-22 11:46:11,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 11:46:14,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 11:46:14,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 2708 conjuncts, 90 conjunts are in the unsatisfiable core [2020-12-22 11:46:14,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 11:46:14,526 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-12-22 11:46:14,528 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 11:46:14,545 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 11:46:14,546 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 11:46:14,547 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2020-12-22 11:46:14,773 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2020-12-22 11:46:14,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 11:46:14,902 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2020-12-22 11:46:14,904 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 11:46:14,948 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 11:46:14,949 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 11:46:14,950 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:45, output treesize:26 [2020-12-22 11:46:15,039 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-22 11:46:15,041 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2020-12-22 11:46:15,046 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 11:46:15,078 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 11:46:15,079 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 11:46:15,079 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:35, output treesize:20 [2020-12-22 11:46:15,247 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 11:46:15,247 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-12-22 11:46:15,250 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 11:46:15,255 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 11:46:15,287 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 11:46:15,288 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-22 11:46:15,289 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:20 [2020-12-22 11:46:15,376 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 11:46:15,380 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 11:46:15,420 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 11:46:15,434 INFO L547 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-12-22 11:46:15,434 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 5 variables, input treesize:33, output treesize:29 [2020-12-22 11:46:19,761 WARN L197 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 26 [2020-12-22 11:46:20,352 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2020-12-22 11:46:20,355 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 11:46:20,394 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 11:46:20,399 INFO L547 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2020-12-22 11:46:20,400 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:29, output treesize:25 [2020-12-22 11:46:20,527 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2020-12-22 11:46:20,535 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-22 11:46:20,541 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-22 11:46:20,542 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-22 11:46:20,543 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:1 [2020-12-22 11:46:20,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 11:46:20,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516273408] [2020-12-22 11:46:20,697 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 11:46:20,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1527906889] [2020-12-22 11:46:20,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 11:46:20,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-12-22 11:46:20,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363084127] [2020-12-22 11:46:20,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-22 11:46:20,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 11:46:20,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-22 11:46:20,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=169, Unknown=1, NotChecked=0, Total=210 [2020-12-22 11:46:20,699 INFO L87 Difference]: Start difference. First operand 223 states and 272 transitions. Second operand 15 states. [2020-12-22 11:46:34,438 WARN L197 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 31 [2020-12-22 11:46:34,746 WARN L197 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2020-12-22 11:46:35,162 WARN L197 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2020-12-22 11:46:39,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 11:46:39,900 INFO L93 Difference]: Finished difference Result 645 states and 785 transitions. [2020-12-22 11:46:39,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-22 11:46:39,901 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 86 [2020-12-22 11:46:39,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 11:46:39,905 INFO L225 Difference]: With dead ends: 645 [2020-12-22 11:46:39,905 INFO L226 Difference]: Without dead ends: 486 [2020-12-22 11:46:39,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=108, Invalid=443, Unknown=1, NotChecked=0, Total=552 [2020-12-22 11:46:39,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 486 states. [2020-12-22 11:46:39,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 486 to 263. [2020-12-22 11:46:39,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-12-22 11:46:39,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 320 transitions. [2020-12-22 11:46:39,930 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 320 transitions. Word has length 86 [2020-12-22 11:46:39,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 11:46:39,930 INFO L481 AbstractCegarLoop]: Abstraction has 263 states and 320 transitions. [2020-12-22 11:46:39,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-22 11:46:39,930 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 320 transitions. [2020-12-22 11:46:39,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-12-22 11:46:39,934 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 11:46:39,934 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 11:46:40,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-22 11:46:40,152 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 11:46:40,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 11:46:40,153 INFO L82 PathProgramCache]: Analyzing trace with hash -2037509238, now seen corresponding path program 1 times [2020-12-22 11:46:40,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 11:46:40,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292397620] [2020-12-22 11:46:40,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 11:46:40,272 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 11:46:40,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [253532611] [2020-12-22 11:46:40,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true