./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c78ec383567aee735f8895b5666134248c3b9de1b96295d83b3c1c6979534c2b --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 04:45:42,323 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 04:45:42,342 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 04:45:42,384 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 04:45:42,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 04:45:42,386 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 04:45:42,391 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 04:45:42,396 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 04:45:42,398 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 04:45:42,398 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 04:45:42,400 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 04:45:42,402 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 04:45:42,402 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 04:45:42,406 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 04:45:42,407 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 04:45:42,410 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 04:45:42,411 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 04:45:42,413 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 04:45:42,415 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 04:45:42,419 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 04:45:42,423 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 04:45:42,424 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 04:45:42,425 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 04:45:42,426 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 04:45:42,427 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 04:45:42,429 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 04:45:42,431 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 04:45:42,431 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 04:45:42,432 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 04:45:42,432 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 04:45:42,433 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 04:45:42,434 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 04:45:42,435 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 04:45:42,436 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 04:45:42,436 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 04:45:42,437 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 04:45:42,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 04:45:42,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 04:45:42,439 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 04:45:42,439 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 04:45:42,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 04:45:42,441 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 04:45:42,442 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-23 04:45:42,476 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 04:45:42,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 04:45:42,477 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 04:45:42,477 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 04:45:42,477 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 04:45:42,478 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 04:45:42,478 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 04:45:42,478 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 04:45:42,478 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 04:45:42,479 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 04:45:42,479 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-23 04:45:42,480 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 04:45:42,480 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-23 04:45:42,480 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 04:45:42,480 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-23 04:45:42,480 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 04:45:42,480 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-23 04:45:42,481 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-23 04:45:42,481 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-23 04:45:42,482 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 04:45:42,482 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-23 04:45:42,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 04:45:42,483 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 04:45:42,483 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 04:45:42,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 04:45:42,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 04:45:42,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 04:45:42,483 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-23 04:45:42,484 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 04:45:42,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-23 04:45:42,484 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-23 04:45:42,484 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-23 04:45:42,484 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-23 04:45:42,485 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c78ec383567aee735f8895b5666134248c3b9de1b96295d83b3c1c6979534c2b [2022-07-23 04:45:42,710 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 04:45:42,733 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 04:45:42,735 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 04:45:42,736 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 04:45:42,737 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 04:45:42,738 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-2.i [2022-07-23 04:45:42,793 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e837b42a4/f935ecafeb8c43de91d5791c06819db6/FLAG3ad50126f [2022-07-23 04:45:43,350 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 04:45:43,350 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-2.i [2022-07-23 04:45:43,373 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e837b42a4/f935ecafeb8c43de91d5791c06819db6/FLAG3ad50126f [2022-07-23 04:45:43,607 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e837b42a4/f935ecafeb8c43de91d5791c06819db6 [2022-07-23 04:45:43,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 04:45:43,611 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 04:45:43,614 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 04:45:43,614 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 04:45:43,617 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 04:45:43,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 04:45:43" (1/1) ... [2022-07-23 04:45:43,619 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@135051a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 04:45:43, skipping insertion in model container [2022-07-23 04:45:43,619 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 04:45:43" (1/1) ... [2022-07-23 04:45:43,625 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 04:45:43,668 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 04:45:44,036 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-2.i[33021,33034] [2022-07-23 04:45:44,178 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-2.i[49681,49694] [2022-07-23 04:45:44,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 04:45:44,220 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 04:45:44,249 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-2.i[33021,33034] [2022-07-23 04:45:44,315 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test5-2.i[49681,49694] [2022-07-23 04:45:44,328 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 04:45:44,357 INFO L208 MainTranslator]: Completed translation [2022-07-23 04:45:44,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 04:45:44 WrapperNode [2022-07-23 04:45:44,358 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 04:45:44,359 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 04:45:44,359 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 04:45:44,359 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 04:45:44,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 04:45:44" (1/1) ... [2022-07-23 04:45:44,411 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 04:45:44" (1/1) ... [2022-07-23 04:45:44,509 INFO L137 Inliner]: procedures = 177, calls = 439, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1557 [2022-07-23 04:45:44,510 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 04:45:44,512 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 04:45:44,512 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 04:45:44,512 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 04:45:44,519 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 04:45:44" (1/1) ... [2022-07-23 04:45:44,520 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 04:45:44" (1/1) ... [2022-07-23 04:45:44,540 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 04:45:44" (1/1) ... [2022-07-23 04:45:44,540 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 04:45:44" (1/1) ... [2022-07-23 04:45:44,592 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 04:45:44" (1/1) ... [2022-07-23 04:45:44,603 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 04:45:44" (1/1) ... [2022-07-23 04:45:44,609 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 04:45:44" (1/1) ... [2022-07-23 04:45:44,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 04:45:44,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 04:45:44,622 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 04:45:44,623 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 04:45:44,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 04:45:44" (1/1) ... [2022-07-23 04:45:44,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 04:45:44,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 04:45:44,656 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-23 04:45:44,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-23 04:45:44,698 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-23 04:45:44,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-23 04:45:44,699 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-23 04:45:44,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-23 04:45:44,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-23 04:45:44,700 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-23 04:45:44,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-23 04:45:44,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-23 04:45:44,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-23 04:45:44,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-23 04:45:44,701 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-23 04:45:44,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-23 04:45:44,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-23 04:45:44,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-23 04:45:44,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 04:45:44,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 04:45:44,987 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 04:45:44,989 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 04:45:46,424 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 04:45:46,437 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 04:45:46,437 INFO L299 CfgBuilder]: Removed 92 assume(true) statements. [2022-07-23 04:45:46,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 04:45:46 BoogieIcfgContainer [2022-07-23 04:45:46,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 04:45:46,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-23 04:45:46,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-23 04:45:46,444 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-23 04:45:46,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 04:45:43" (1/3) ... [2022-07-23 04:45:46,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616727d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 04:45:46, skipping insertion in model container [2022-07-23 04:45:46,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 04:45:44" (2/3) ... [2022-07-23 04:45:46,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616727d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 04:45:46, skipping insertion in model container [2022-07-23 04:45:46,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 04:45:46" (3/3) ... [2022-07-23 04:45:46,447 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test5-2.i [2022-07-23 04:45:46,460 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-23 04:45:46,461 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-23 04:45:46,525 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-23 04:45:46,531 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@143af40a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@14cfd712 [2022-07-23 04:45:46,531 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-23 04:45:46,541 INFO L276 IsEmpty]: Start isEmpty. Operand has 287 states, 271 states have (on average 1.6974169741697418) internal successors, (460), 278 states have internal predecessors, (460), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-23 04:45:46,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-07-23 04:45:46,548 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:45:46,549 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 04:45:46,549 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 04:45:46,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:45:46,556 INFO L85 PathProgramCache]: Analyzing trace with hash 691392686, now seen corresponding path program 1 times [2022-07-23 04:45:46,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:45:46,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187756019] [2022-07-23 04:45:46,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:45:46,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:45:46,652 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 04:45:46,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [477931142] [2022-07-23 04:45:46,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:45:46,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 04:45:46,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 04:45:46,656 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 04:45:46,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-23 04:45:46,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:45:46,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-23 04:45:46,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 04:45:46,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 04:45:46,860 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 04:45:46,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 04:45:46,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187756019] [2022-07-23 04:45:46,861 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 04:45:46,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477931142] [2022-07-23 04:45:46,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477931142] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 04:45:46,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 04:45:46,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 04:45:46,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616230426] [2022-07-23 04:45:46,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 04:45:46,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-23 04:45:46,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 04:45:46,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-23 04:45:46,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-23 04:45:46,895 INFO L87 Difference]: Start difference. First operand has 287 states, 271 states have (on average 1.6974169741697418) internal successors, (460), 278 states have internal predecessors, (460), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 04:45:46,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 04:45:46,965 INFO L93 Difference]: Finished difference Result 572 states and 967 transitions. [2022-07-23 04:45:46,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-23 04:45:46,967 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-07-23 04:45:46,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 04:45:46,977 INFO L225 Difference]: With dead ends: 572 [2022-07-23 04:45:46,977 INFO L226 Difference]: Without dead ends: 254 [2022-07-23 04:45:46,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-23 04:45:46,984 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 04:45:46,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 04:45:47,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2022-07-23 04:45:47,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2022-07-23 04:45:47,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 239 states have (on average 1.3179916317991631) internal successors, (315), 245 states have internal predecessors, (315), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-23 04:45:47,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 337 transitions. [2022-07-23 04:45:47,031 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 337 transitions. Word has length 8 [2022-07-23 04:45:47,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 04:45:47,031 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 337 transitions. [2022-07-23 04:45:47,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 04:45:47,032 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 337 transitions. [2022-07-23 04:45:47,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-23 04:45:47,033 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:45:47,033 INFO L195 NwaCegarLoop]: 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] [2022-07-23 04:45:47,053 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-23 04:45:47,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-23 04:45:47,243 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 04:45:47,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:45:47,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1622673081, now seen corresponding path program 1 times [2022-07-23 04:45:47,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:45:47,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625459265] [2022-07-23 04:45:47,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:45:47,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:45:47,287 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 04:45:47,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [732966508] [2022-07-23 04:45:47,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:45:47,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 04:45:47,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 04:45:47,293 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 04:45:47,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-23 04:45:47,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:45:47,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-23 04:45:47,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 04:45:47,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 04:45:47,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 04:45:47,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 04:45:47,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625459265] [2022-07-23 04:45:47,505 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 04:45:47,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732966508] [2022-07-23 04:45:47,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [732966508] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 04:45:47,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 04:45:47,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 04:45:47,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904588282] [2022-07-23 04:45:47,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 04:45:47,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 04:45:47,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 04:45:47,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 04:45:47,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 04:45:47,508 INFO L87 Difference]: Start difference. First operand 254 states and 337 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 04:45:47,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 04:45:47,567 INFO L93 Difference]: Finished difference Result 573 states and 768 transitions. [2022-07-23 04:45:47,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 04:45:47,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2022-07-23 04:45:47,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 04:45:47,572 INFO L225 Difference]: With dead ends: 573 [2022-07-23 04:45:47,572 INFO L226 Difference]: Without dead ends: 495 [2022-07-23 04:45:47,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 04:45:47,574 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 300 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 04:45:47,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 705 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 04:45:47,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2022-07-23 04:45:47,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 255. [2022-07-23 04:45:47,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 240 states have (on average 1.3166666666666667) internal successors, (316), 246 states have internal predecessors, (316), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-23 04:45:47,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 338 transitions. [2022-07-23 04:45:47,597 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 338 transitions. Word has length 42 [2022-07-23 04:45:47,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 04:45:47,597 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 338 transitions. [2022-07-23 04:45:47,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 04:45:47,598 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 338 transitions. [2022-07-23 04:45:47,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-23 04:45:47,602 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:45:47,602 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 04:45:47,634 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-23 04:45:47,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-07-23 04:45:47,820 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 04:45:47,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:45:47,821 INFO L85 PathProgramCache]: Analyzing trace with hash 1488765968, now seen corresponding path program 1 times [2022-07-23 04:45:47,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:45:47,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593970977] [2022-07-23 04:45:47,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:45:47,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:45:48,046 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 04:45:48,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2070598405] [2022-07-23 04:45:48,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:45:48,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 04:45:48,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 04:45:48,050 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 04:45:48,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-23 04:45:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:45:49,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 3064 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-23 04:45:49,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 04:45:49,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 04:45:49,090 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 04:45:49,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 04:45:49,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593970977] [2022-07-23 04:45:49,091 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 04:45:49,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2070598405] [2022-07-23 04:45:49,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2070598405] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 04:45:49,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 04:45:49,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 04:45:49,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872610540] [2022-07-23 04:45:49,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 04:45:49,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 04:45:49,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 04:45:49,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 04:45:49,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 04:45:49,094 INFO L87 Difference]: Start difference. First operand 255 states and 338 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 04:45:49,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 04:45:49,168 INFO L93 Difference]: Finished difference Result 528 states and 704 transitions. [2022-07-23 04:45:49,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 04:45:49,168 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-07-23 04:45:49,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 04:45:49,170 INFO L225 Difference]: With dead ends: 528 [2022-07-23 04:45:49,170 INFO L226 Difference]: Without dead ends: 276 [2022-07-23 04:45:49,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 04:45:49,178 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 9 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 04:45:49,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 619 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 04:45:49,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-07-23 04:45:49,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 275. [2022-07-23 04:45:49,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 260 states have (on average 1.2923076923076924) internal successors, (336), 266 states have internal predecessors, (336), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-23 04:45:49,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 358 transitions. [2022-07-23 04:45:49,205 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 358 transitions. Word has length 140 [2022-07-23 04:45:49,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 04:45:49,205 INFO L495 AbstractCegarLoop]: Abstraction has 275 states and 358 transitions. [2022-07-23 04:45:49,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 04:45:49,205 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 358 transitions. [2022-07-23 04:45:49,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-23 04:45:49,210 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:45:49,210 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 04:45:49,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-23 04:45:49,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 04:45:49,432 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 04:45:49,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:45:49,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1918424274, now seen corresponding path program 1 times [2022-07-23 04:45:49,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:45:49,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380361922] [2022-07-23 04:45:49,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:45:49,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:45:49,622 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 04:45:49,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1675548035] [2022-07-23 04:45:49,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:45:49,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 04:45:49,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 04:45:49,624 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 04:45:49,626 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-23 04:45:50,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:45:50,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 3066 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-23 04:45:50,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 04:45:50,771 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 04:45:50,772 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 04:45:50,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 04:45:50,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380361922] [2022-07-23 04:45:50,773 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 04:45:50,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675548035] [2022-07-23 04:45:50,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675548035] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 04:45:50,773 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 04:45:50,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 04:45:50,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396468524] [2022-07-23 04:45:50,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 04:45:50,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 04:45:50,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 04:45:50,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 04:45:50,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 04:45:50,776 INFO L87 Difference]: Start difference. First operand 275 states and 358 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 04:45:50,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 04:45:50,867 INFO L93 Difference]: Finished difference Result 568 states and 744 transitions. [2022-07-23 04:45:50,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 04:45:50,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-07-23 04:45:50,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 04:45:50,874 INFO L225 Difference]: With dead ends: 568 [2022-07-23 04:45:50,874 INFO L226 Difference]: Without dead ends: 296 [2022-07-23 04:45:50,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 04:45:50,877 INFO L413 NwaCegarLoop]: 319 mSDtfsCounter, 8 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 621 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 04:45:50,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 621 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 04:45:50,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-07-23 04:45:50,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 295. [2022-07-23 04:45:50,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 280 states have (on average 1.2714285714285714) internal successors, (356), 286 states have internal predecessors, (356), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-23 04:45:50,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 378 transitions. [2022-07-23 04:45:50,889 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 378 transitions. Word has length 140 [2022-07-23 04:45:50,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 04:45:50,890 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 378 transitions. [2022-07-23 04:45:50,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 04:45:50,890 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 378 transitions. [2022-07-23 04:45:50,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-23 04:45:50,892 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:45:50,892 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 04:45:50,922 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-23 04:45:51,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 04:45:51,103 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 04:45:51,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:45:51,104 INFO L85 PathProgramCache]: Analyzing trace with hash -690363184, now seen corresponding path program 1 times [2022-07-23 04:45:51,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:45:51,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691701994] [2022-07-23 04:45:51,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:45:51,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:45:51,296 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 04:45:51,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [429434737] [2022-07-23 04:45:51,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:45:51,297 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 04:45:51,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 04:45:51,298 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 04:45:51,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-23 04:45:52,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:45:52,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 3068 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-23 04:45:52,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 04:45:52,553 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 04:45:52,554 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 04:45:52,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 04:45:52,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691701994] [2022-07-23 04:45:52,554 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 04:45:52,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429434737] [2022-07-23 04:45:52,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429434737] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 04:45:52,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 04:45:52,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 04:45:52,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422177344] [2022-07-23 04:45:52,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 04:45:52,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 04:45:52,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 04:45:52,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 04:45:52,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 04:45:52,557 INFO L87 Difference]: Start difference. First operand 295 states and 378 transitions. Second operand has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 04:45:52,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 04:45:52,619 INFO L93 Difference]: Finished difference Result 393 states and 514 transitions. [2022-07-23 04:45:52,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 04:45:52,622 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-07-23 04:45:52,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 04:45:52,624 INFO L225 Difference]: With dead ends: 393 [2022-07-23 04:45:52,624 INFO L226 Difference]: Without dead ends: 316 [2022-07-23 04:45:52,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 04:45:52,625 INFO L413 NwaCegarLoop]: 317 mSDtfsCounter, 9 mSDsluCounter, 302 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 04:45:52,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 619 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 04:45:52,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2022-07-23 04:45:52,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 315. [2022-07-23 04:45:52,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 300 states have (on average 1.2533333333333334) internal successors, (376), 306 states have internal predecessors, (376), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-23 04:45:52,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 398 transitions. [2022-07-23 04:45:52,635 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 398 transitions. Word has length 140 [2022-07-23 04:45:52,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 04:45:52,636 INFO L495 AbstractCegarLoop]: Abstraction has 315 states and 398 transitions. [2022-07-23 04:45:52,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.666666666666664) internal successors, (140), 3 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 04:45:52,637 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 398 transitions. [2022-07-23 04:45:52,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-23 04:45:52,638 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:45:52,638 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 04:45:52,667 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-23 04:45:52,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 04:45:52,856 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 04:45:52,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:45:52,856 INFO L85 PathProgramCache]: Analyzing trace with hash -909217902, now seen corresponding path program 1 times [2022-07-23 04:45:52,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:45:52,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53910911] [2022-07-23 04:45:52,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:45:52,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:45:53,037 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 04:45:53,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1831222719] [2022-07-23 04:45:53,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:45:53,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 04:45:53,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 04:45:53,039 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 04:45:53,040 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-23 04:45:54,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:45:54,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 3070 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-23 04:45:54,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 04:45:54,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 04:45:54,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 04:45:54,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 04:45:54,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53910911] [2022-07-23 04:45:54,362 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 04:45:54,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831222719] [2022-07-23 04:45:54,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1831222719] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 04:45:54,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 04:45:54,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 04:45:54,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165123352] [2022-07-23 04:45:54,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 04:45:54,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 04:45:54,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 04:45:54,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 04:45:54,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 04:45:54,365 INFO L87 Difference]: Start difference. First operand 315 states and 398 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 04:45:54,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 04:45:54,441 INFO L93 Difference]: Finished difference Result 619 states and 785 transitions. [2022-07-23 04:45:54,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 04:45:54,442 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-07-23 04:45:54,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 04:45:54,444 INFO L225 Difference]: With dead ends: 619 [2022-07-23 04:45:54,444 INFO L226 Difference]: Without dead ends: 307 [2022-07-23 04:45:54,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-23 04:45:54,448 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 294 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 647 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 04:45:54,448 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [305 Valid, 647 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 04:45:54,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-07-23 04:45:54,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 301. [2022-07-23 04:45:54,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 286 states have (on average 1.2412587412587412) internal successors, (355), 292 states have internal predecessors, (355), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-23 04:45:54,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 377 transitions. [2022-07-23 04:45:54,466 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 377 transitions. Word has length 140 [2022-07-23 04:45:54,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 04:45:54,466 INFO L495 AbstractCegarLoop]: Abstraction has 301 states and 377 transitions. [2022-07-23 04:45:54,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 04:45:54,467 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 377 transitions. [2022-07-23 04:45:54,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-23 04:45:54,474 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:45:54,475 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 04:45:54,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-23 04:45:54,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 04:45:54,704 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 04:45:54,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:45:54,704 INFO L85 PathProgramCache]: Analyzing trace with hash -992002364, now seen corresponding path program 1 times [2022-07-23 04:45:54,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:45:54,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327930696] [2022-07-23 04:45:54,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:45:54,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:45:54,928 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 04:45:54,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1502602670] [2022-07-23 04:45:54,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:45:54,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 04:45:54,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 04:45:54,930 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 04:45:54,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-23 04:45:56,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:45:56,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 3056 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-23 04:45:56,265 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 04:45:56,294 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 04:45:56,294 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 04:45:56,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 04:45:56,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327930696] [2022-07-23 04:45:56,295 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 04:45:56,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502602670] [2022-07-23 04:45:56,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1502602670] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 04:45:56,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 04:45:56,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 04:45:56,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970904575] [2022-07-23 04:45:56,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 04:45:56,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 04:45:56,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 04:45:56,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 04:45:56,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-23 04:45:56,297 INFO L87 Difference]: Start difference. First operand 301 states and 377 transitions. Second operand has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 04:45:56,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 04:45:56,424 INFO L93 Difference]: Finished difference Result 680 states and 852 transitions. [2022-07-23 04:45:56,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 04:45:56,425 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-07-23 04:45:56,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 04:45:56,427 INFO L225 Difference]: With dead ends: 680 [2022-07-23 04:45:56,428 INFO L226 Difference]: Without dead ends: 382 [2022-07-23 04:45:56,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-23 04:45:56,429 INFO L413 NwaCegarLoop]: 412 mSDtfsCounter, 276 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 1330 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 04:45:56,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 1330 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 04:45:56,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2022-07-23 04:45:56,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 287. [2022-07-23 04:45:56,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 272 states have (on average 1.2279411764705883) internal successors, (334), 278 states have internal predecessors, (334), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-23 04:45:56,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 356 transitions. [2022-07-23 04:45:56,444 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 356 transitions. Word has length 140 [2022-07-23 04:45:56,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 04:45:56,445 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 356 transitions. [2022-07-23 04:45:56,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.0) internal successors, (140), 5 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 04:45:56,445 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 356 transitions. [2022-07-23 04:45:56,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-23 04:45:56,447 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:45:56,447 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 04:45:56,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-23 04:45:56,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 04:45:56,663 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 04:45:56,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:45:56,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1368143440, now seen corresponding path program 1 times [2022-07-23 04:45:56,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:45:56,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188424124] [2022-07-23 04:45:56,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:45:56,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:45:56,838 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 04:45:56,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1602533513] [2022-07-23 04:45:56,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:45:56,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 04:45:56,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 04:45:56,844 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 04:45:56,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-23 04:45:58,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:45:58,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 3044 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-23 04:45:58,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 04:45:58,449 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 04:45:58,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 04:45:58,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 04:45:58,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188424124] [2022-07-23 04:45:58,450 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 04:45:58,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602533513] [2022-07-23 04:45:58,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602533513] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 04:45:58,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 04:45:58,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 04:45:58,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520033365] [2022-07-23 04:45:58,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 04:45:58,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-23 04:45:58,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 04:45:58,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-23 04:45:58,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-23 04:45:58,452 INFO L87 Difference]: Start difference. First operand 287 states and 356 transitions. Second operand has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 04:45:58,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 04:45:58,518 INFO L93 Difference]: Finished difference Result 375 states and 472 transitions. [2022-07-23 04:45:58,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-23 04:45:58,519 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-07-23 04:45:58,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 04:45:58,520 INFO L225 Difference]: With dead ends: 375 [2022-07-23 04:45:58,521 INFO L226 Difference]: Without dead ends: 278 [2022-07-23 04:45:58,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-23 04:45:58,522 INFO L413 NwaCegarLoop]: 300 mSDtfsCounter, 80 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 04:45:58,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 819 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 04:45:58,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-07-23 04:45:58,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 273. [2022-07-23 04:45:58,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 258 states have (on average 1.2131782945736433) internal successors, (313), 264 states have internal predecessors, (313), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 7 states have call predecessors, (11), 11 states have call successors, (11) [2022-07-23 04:45:58,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 335 transitions. [2022-07-23 04:45:58,531 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 335 transitions. Word has length 140 [2022-07-23 04:45:58,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 04:45:58,531 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 335 transitions. [2022-07-23 04:45:58,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.0) internal successors, (140), 4 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 04:45:58,532 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 335 transitions. [2022-07-23 04:45:58,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-23 04:45:58,533 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:45:58,533 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 04:45:58,574 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-23 04:45:58,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-23 04:45:58,756 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 04:45:58,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:45:58,756 INFO L85 PathProgramCache]: Analyzing trace with hash 485294594, now seen corresponding path program 1 times [2022-07-23 04:45:58,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:45:58,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666539198] [2022-07-23 04:45:58,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:45:58,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:45:58,942 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 04:45:58,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1178043843] [2022-07-23 04:45:58,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:45:58,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 04:45:58,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 04:45:58,946 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 04:45:58,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-23 04:46:00,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:46:00,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 3030 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-23 04:46:00,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 04:46:00,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 04:46:00,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 04:46:00,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 04:46:00,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 04:46:00,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666539198] [2022-07-23 04:46:00,755 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 04:46:00,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1178043843] [2022-07-23 04:46:00,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1178043843] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 04:46:00,755 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 04:46:00,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2022-07-23 04:46:00,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454072299] [2022-07-23 04:46:00,757 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 04:46:00,758 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-23 04:46:00,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 04:46:00,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-23 04:46:00,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-23 04:46:00,759 INFO L87 Difference]: Start difference. First operand 273 states and 335 transitions. Second operand has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 04:46:00,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 04:46:00,878 INFO L93 Difference]: Finished difference Result 1057 states and 1307 transitions. [2022-07-23 04:46:00,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 04:46:00,879 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 140 [2022-07-23 04:46:00,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 04:46:00,884 INFO L225 Difference]: With dead ends: 1057 [2022-07-23 04:46:00,884 INFO L226 Difference]: Without dead ends: 973 [2022-07-23 04:46:00,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-23 04:46:00,887 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 1033 mSDsluCounter, 982 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 1414 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 04:46:00,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 1414 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 04:46:00,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2022-07-23 04:46:00,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 819. [2022-07-23 04:46:00,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 786 states have (on average 1.1997455470737914) internal successors, (943), 792 states have internal predecessors, (943), 29 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (29), 25 states have call predecessors, (29), 29 states have call successors, (29) [2022-07-23 04:46:00,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1001 transitions. [2022-07-23 04:46:00,917 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1001 transitions. Word has length 140 [2022-07-23 04:46:00,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 04:46:00,917 INFO L495 AbstractCegarLoop]: Abstraction has 819 states and 1001 transitions. [2022-07-23 04:46:00,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 40.0) internal successors, (240), 6 states have internal predecessors, (240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 04:46:00,918 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1001 transitions. [2022-07-23 04:46:00,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2022-07-23 04:46:00,926 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:46:00,927 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 04:46:00,963 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2022-07-23 04:46:01,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 04:46:01,142 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 04:46:01,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:46:01,142 INFO L85 PathProgramCache]: Analyzing trace with hash -541614505, now seen corresponding path program 2 times [2022-07-23 04:46:01,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:46:01,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631713147] [2022-07-23 04:46:01,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:46:01,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:46:01,707 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 04:46:01,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1199968831] [2022-07-23 04:46:01,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-23 04:46:01,708 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 04:46:01,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 04:46:01,709 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 04:46:01,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-23 04:46:05,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-23 04:46:05,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 04:46:05,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 11721 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-23 04:46:05,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 04:46:06,127 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 0 proven. 592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 04:46:06,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 04:46:06,630 INFO L134 CoverageAnalysis]: Checked inductivity of 592 backedges. 0 proven. 592 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 04:46:06,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 04:46:06,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631713147] [2022-07-23 04:46:06,631 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 04:46:06,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1199968831] [2022-07-23 04:46:06,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1199968831] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 04:46:06,631 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 04:46:06,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-07-23 04:46:06,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393666689] [2022-07-23 04:46:06,632 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 04:46:06,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-23 04:46:06,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 04:46:06,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-23 04:46:06,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-07-23 04:46:06,635 INFO L87 Difference]: Start difference. First operand 819 states and 1001 transitions. Second operand has 12 states, 12 states have (on average 69.0) internal successors, (828), 12 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 04:46:06,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 04:46:07,000 INFO L93 Difference]: Finished difference Result 2380 states and 2939 transitions. [2022-07-23 04:46:07,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-23 04:46:07,001 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 69.0) internal successors, (828), 12 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 434 [2022-07-23 04:46:07,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 04:46:07,009 INFO L225 Difference]: With dead ends: 2380 [2022-07-23 04:46:07,010 INFO L226 Difference]: Without dead ends: 2296 [2022-07-23 04:46:07,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 866 GetRequests, 856 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2022-07-23 04:46:07,011 INFO L413 NwaCegarLoop]: 521 mSDtfsCounter, 3878 mSDsluCounter, 2483 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3968 SdHoareTripleChecker+Valid, 3004 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 04:46:07,012 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3968 Valid, 3004 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 04:46:07,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2296 states. [2022-07-23 04:46:07,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2296 to 1911. [2022-07-23 04:46:07,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1911 states, 1842 states have (on average 1.1959826275787189) internal successors, (2203), 1848 states have internal predecessors, (2203), 65 states have call successors, (65), 2 states have call predecessors, (65), 2 states have return successors, (65), 61 states have call predecessors, (65), 65 states have call successors, (65) [2022-07-23 04:46:07,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1911 states to 1911 states and 2333 transitions. [2022-07-23 04:46:07,064 INFO L78 Accepts]: Start accepts. Automaton has 1911 states and 2333 transitions. Word has length 434 [2022-07-23 04:46:07,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 04:46:07,066 INFO L495 AbstractCegarLoop]: Abstraction has 1911 states and 2333 transitions. [2022-07-23 04:46:07,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 69.0) internal successors, (828), 12 states have internal predecessors, (828), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 04:46:07,066 INFO L276 IsEmpty]: Start isEmpty. Operand 1911 states and 2333 transitions. [2022-07-23 04:46:07,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1023 [2022-07-23 04:46:07,094 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:46:07,095 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 04:46:07,160 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-23 04:46:07,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-23 04:46:07,320 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 04:46:07,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:46:07,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1302990785, now seen corresponding path program 3 times [2022-07-23 04:46:07,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:46:07,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857177298] [2022-07-23 04:46:07,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:46:07,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:46:08,782 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 04:46:08,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1317384320] [2022-07-23 04:46:08,783 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-23 04:46:08,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 04:46:08,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 04:46:08,785 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 04:46:08,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-23 04:46:13,667 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-23 04:46:13,668 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-23 04:46:13,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 3030 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 04:46:13,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 04:46:16,103 INFO L134 CoverageAnalysis]: Checked inductivity of 4420 backedges. 145 proven. 0 refuted. 0 times theorem prover too weak. 4275 trivial. 0 not checked. [2022-07-23 04:46:16,104 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 04:46:16,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 04:46:16,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857177298] [2022-07-23 04:46:16,104 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 04:46:16,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1317384320] [2022-07-23 04:46:16,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1317384320] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 04:46:16,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 04:46:16,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 04:46:16,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356716765] [2022-07-23 04:46:16,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 04:46:16,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 04:46:16,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 04:46:16,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 04:46:16,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 04:46:16,107 INFO L87 Difference]: Start difference. First operand 1911 states and 2333 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 04:46:16,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 04:46:16,191 INFO L93 Difference]: Finished difference Result 3736 states and 4568 transitions. [2022-07-23 04:46:16,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 04:46:16,192 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1022 [2022-07-23 04:46:16,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 04:46:16,200 INFO L225 Difference]: With dead ends: 3736 [2022-07-23 04:46:16,200 INFO L226 Difference]: Without dead ends: 1970 [2022-07-23 04:46:16,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1021 GetRequests, 1020 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 04:46:16,204 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 124 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 04:46:16,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 658 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 04:46:16,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1970 states. [2022-07-23 04:46:16,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1970 to 1968. [2022-07-23 04:46:16,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1968 states, 1894 states have (on average 1.195881731784583) internal successors, (2265), 1905 states have internal predecessors, (2265), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 62 states have call predecessors, (70), 70 states have call successors, (70) [2022-07-23 04:46:16,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1968 states to 1968 states and 2405 transitions. [2022-07-23 04:46:16,259 INFO L78 Accepts]: Start accepts. Automaton has 1968 states and 2405 transitions. Word has length 1022 [2022-07-23 04:46:16,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 04:46:16,260 INFO L495 AbstractCegarLoop]: Abstraction has 1968 states and 2405 transitions. [2022-07-23 04:46:16,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 04:46:16,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1968 states and 2405 transitions. [2022-07-23 04:46:16,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1038 [2022-07-23 04:46:16,289 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:46:16,289 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 04:46:16,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-23 04:46:16,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-23 04:46:16,516 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 04:46:16,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:46:16,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1607178450, now seen corresponding path program 1 times [2022-07-23 04:46:16,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:46:16,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384363761] [2022-07-23 04:46:16,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:46:16,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:46:17,842 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 04:46:17,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [817295156] [2022-07-23 04:46:17,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:46:17,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 04:46:17,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 04:46:17,852 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 04:46:17,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-23 04:46:27,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:46:27,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 28240 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 04:46:27,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 04:46:27,864 INFO L134 CoverageAnalysis]: Checked inductivity of 4406 backedges. 325 proven. 0 refuted. 0 times theorem prover too weak. 4081 trivial. 0 not checked. [2022-07-23 04:46:27,865 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 04:46:27,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 04:46:27,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384363761] [2022-07-23 04:46:27,865 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 04:46:27,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817295156] [2022-07-23 04:46:27,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817295156] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 04:46:27,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 04:46:27,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 04:46:27,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835646999] [2022-07-23 04:46:27,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 04:46:27,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 04:46:27,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 04:46:27,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 04:46:27,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 04:46:27,868 INFO L87 Difference]: Start difference. First operand 1968 states and 2405 transitions. Second operand has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-23 04:46:28,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 04:46:28,012 INFO L93 Difference]: Finished difference Result 3878 states and 4744 transitions. [2022-07-23 04:46:28,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 04:46:28,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 1037 [2022-07-23 04:46:28,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 04:46:28,021 INFO L225 Difference]: With dead ends: 3878 [2022-07-23 04:46:28,022 INFO L226 Difference]: Without dead ends: 1966 [2022-07-23 04:46:28,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1036 GetRequests, 1035 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 04:46:28,025 INFO L413 NwaCegarLoop]: 315 mSDtfsCounter, 15 mSDsluCounter, 300 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 04:46:28,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 615 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 04:46:28,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1966 states. [2022-07-23 04:46:28,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1966 to 1966. [2022-07-23 04:46:28,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1966 states, 1892 states have (on average 1.1955602536997887) internal successors, (2262), 1903 states have internal predecessors, (2262), 70 states have call successors, (70), 2 states have call predecessors, (70), 2 states have return successors, (70), 62 states have call predecessors, (70), 70 states have call successors, (70) [2022-07-23 04:46:28,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1966 states to 1966 states and 2402 transitions. [2022-07-23 04:46:28,081 INFO L78 Accepts]: Start accepts. Automaton has 1966 states and 2402 transitions. Word has length 1037 [2022-07-23 04:46:28,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 04:46:28,081 INFO L495 AbstractCegarLoop]: Abstraction has 1966 states and 2402 transitions. [2022-07-23 04:46:28,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 62.333333333333336) internal successors, (187), 3 states have internal predecessors, (187), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-23 04:46:28,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1966 states and 2402 transitions. [2022-07-23 04:46:28,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1053 [2022-07-23 04:46:28,093 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:46:28,093 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 04:46:28,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-23 04:46:28,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-23 04:46:28,304 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 04:46:28,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:46:28,305 INFO L85 PathProgramCache]: Analyzing trace with hash -552910831, now seen corresponding path program 1 times [2022-07-23 04:46:28,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:46:28,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628577012] [2022-07-23 04:46:28,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:46:28,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:46:29,631 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 04:46:29,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1660734669] [2022-07-23 04:46:29,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:46:29,632 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 04:46:29,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 04:46:29,634 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 04:46:29,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-23 04:46:40,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 04:46:40,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 27377 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-23 04:46:40,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 04:46:42,840 INFO L134 CoverageAnalysis]: Checked inductivity of 4408 backedges. 1431 proven. 0 refuted. 0 times theorem prover too weak. 2977 trivial. 0 not checked. [2022-07-23 04:46:42,840 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 04:46:42,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 04:46:42,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628577012] [2022-07-23 04:46:42,841 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-23 04:46:42,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660734669] [2022-07-23 04:46:42,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660734669] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 04:46:42,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 04:46:42,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 04:46:42,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106610526] [2022-07-23 04:46:42,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 04:46:42,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 04:46:42,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 04:46:42,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 04:46:42,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 04:46:42,844 INFO L87 Difference]: Start difference. First operand 1966 states and 2402 transitions. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-23 04:46:42,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 04:46:42,946 INFO L93 Difference]: Finished difference Result 4886 states and 5976 transitions. [2022-07-23 04:46:42,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 04:46:42,946 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1052 [2022-07-23 04:46:42,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 04:46:42,960 INFO L225 Difference]: With dead ends: 4886 [2022-07-23 04:46:42,960 INFO L226 Difference]: Without dead ends: 3418 [2022-07-23 04:46:42,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1051 GetRequests, 1050 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 04:46:42,965 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 141 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 04:46:42,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 765 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 04:46:42,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3418 states. [2022-07-23 04:46:43,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3418 to 3416. [2022-07-23 04:46:43,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3416 states, 3309 states have (on average 1.1967361740707163) internal successors, (3960), 3320 states have internal predecessors, (3960), 103 states have call successors, (103), 2 states have call predecessors, (103), 2 states have return successors, (103), 95 states have call predecessors, (103), 103 states have call successors, (103) [2022-07-23 04:46:43,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3416 states to 3416 states and 4166 transitions. [2022-07-23 04:46:43,066 INFO L78 Accepts]: Start accepts. Automaton has 3416 states and 4166 transitions. Word has length 1052 [2022-07-23 04:46:43,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 04:46:43,068 INFO L495 AbstractCegarLoop]: Abstraction has 3416 states and 4166 transitions. [2022-07-23 04:46:43,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-23 04:46:43,068 INFO L276 IsEmpty]: Start isEmpty. Operand 3416 states and 4166 transitions. [2022-07-23 04:46:43,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1060 [2022-07-23 04:46:43,139 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 04:46:43,140 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 04:46:43,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-23 04:46:43,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-23 04:46:43,356 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-23 04:46:43,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 04:46:43,357 INFO L85 PathProgramCache]: Analyzing trace with hash 342774203, now seen corresponding path program 1 times [2022-07-23 04:46:43,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 04:46:43,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198136700] [2022-07-23 04:46:43,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:46:43,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 04:46:44,904 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-23 04:46:44,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [525893235] [2022-07-23 04:46:44,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 04:46:44,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 04:46:44,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 04:46:44,911 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 04:46:44,911 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process